Elucidating Magmatic Drivers and Eruptive Behaviours of Persistently Active Volcanoes

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Elucidating Magmatic Drivers and Eruptive Behaviours of Persistently Active Volcanoes by : Chris Firth

Download or read book Elucidating Magmatic Drivers and Eruptive Behaviours of Persistently Active Volcanoes written by Chris Firth and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yasur and Ambrym volcanoes, which are located within the Vanuatu Arc, are amongst the most regularly active in the world, with both experiencing ongoing eruption throughout their historical record. They offer a natural laboratory for understanding magmatic processes that sustain persistent volcanic activity. Furthermore, both volcanoes have experienced higher magnitide eruptions within their history, albeit with different frequency-magnitude relationships.Over a dozen eruptions of VEI 2-3 have been experienced at Ambrym throughout the past century, while at Yasur eruptions of VEI 5 or more have ocurred at intervals of ~10-25 kyr. These allow the relationship between low-magnitude, persistent activity and higher magnitude,explosive and effusive eruptions to be explored. Both of these motivating themes are primarily investigated by petrological and geochemical means, including mineral, tephra and whole rock major element analysis and whole rock trace element and Sr, Nd, Hf and U-series isotope analysis. This geochemical data is reconciled with historical and geological records of eruptive behvaiour to link changes in magmatic processes with variations in eruptive activity.

Drivers of Variation in the Eruptive and Magmatic Processes of a Persistently Active Volcano, Yasur, Vanuatu

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ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Drivers of Variation in the Eruptive and Magmatic Processes of a Persistently Active Volcano, Yasur, Vanuatu by : Benjamin Clifford Simons

Download or read book Drivers of Variation in the Eruptive and Magmatic Processes of a Persistently Active Volcano, Yasur, Vanuatu written by Benjamin Clifford Simons and published by . This book was released on 2019 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study to better understand the shallow conduit processes and eruptive manifestations of Strombolian-style volcanism was conducted at Mt Yasur, on Tanna Island, Vanuatu. It comprised an 11-week, multi-component monitoring deployment that utilized seismometers, gas spectrometry, thermal-IR imagery and visual observations. From this, explosion parameters were quantified and related to global analogues. Strombolian-style explosions occurred at rates of 30 to 129 per hour, reaching heights of 30-520 m, and ranging in style from Types 1, 2a, 2b, and a new style defined as Type 3. Cycles of 10 to 20 days were observed to indicate changes in magma and volatile flux across the whole volcano. Other ~5-day fluctuations at individual vent zones reflected changes in magma and degassing percolation within each upper conduit branch. An overall decline in the strength of activity during the observation period signified a longer cycle only partly observed. Statistical modelling revealed that the two main craters (South and North) are separated deeply, but above the level of the magma reservoir. Two vent zones within South Crater (A and B) are closely connected and display alternating activity with some periods of simultaneous paired explosions. This indicated only shallow separation of conduits above the point of gas-slug formation. The most powerful volcanism occurred during periods of increased background activity and SO2 flux, associated with hot conduit pathways filled with mobile magma. Lower power and low frequency, ash-rich eruptions occurred (Type 2b) if cooling and stagnant magma was present within the conduit. A new explosion type, Type 3, occurred when vents were deeply buried by surface debris and with no background degassing. Precursory low-frequency seismic signals indicate that gas is trapped beneath the surface, and that gas-rupture mechanics for Type 3 differ from other explosion types. Overall proximal hazards are primarily from ejection of lava bombs. Mean explosion heights of 150 m and ~250 m are required to reach the rim and outerflanks (and car park), respectively. On 31% of days, bombs landed on the rim and on 2% of days, they reached the car park. The outcomes of this study included linking the variation in explosion types at steady-state Strombolian-style volcanic activity to the upper conduit magma state and identifying new hazard warning/mitigation strategies.

The Physics of Explosive Volcanic Eruptions

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Author :
Publisher : Geological Society of London
ISBN 13 : 9781862390201
Total Pages : 200 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis The Physics of Explosive Volcanic Eruptions by : Jennifer Susan Gilbert

Download or read book The Physics of Explosive Volcanic Eruptions written by Jennifer Susan Gilbert and published by Geological Society of London. This book was released on 1998 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physics of Explosive Volcanic Eruptions includes seven review papers that outline our current understanding of several aspects of the physical processes affecting magma during volcanic eruptions. An introductory chapter highlights research areas where our understanding is incomplete, or even completely lacking, and where work needs advancing if our knowledge of volcanic processes is to be substantially improved. The book covers topics on the physical properties of silicic magma, vesiculation processes, conduit flow and fragmentation, gas loss from magmas during eruption, models of volcanic eruption columns, tephra dispersal and pyroclastic density currents.

Exploring Volcanic Paroxysmal Explosive Activity From Magma Source to Ground and Atmosphere

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Publisher : Frontiers Media SA
ISBN 13 : 2889631338
Total Pages : 169 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Exploring Volcanic Paroxysmal Explosive Activity From Magma Source to Ground and Atmosphere by : Sonia Calvari

Download or read book Exploring Volcanic Paroxysmal Explosive Activity From Magma Source to Ground and Atmosphere written by Sonia Calvari and published by Frontiers Media SA. This book was released on 2019-10-17 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paroxysmal explosive activity is one of the most spectacular natural phenomena, which is recognized as having strong impact not only at a local scale but whose effects can also reach far areas and, indeed, can significantly affect the atmosphere, and the environment in the overall. The most devastating and recent example occurred in 2010, when the Icelandic Eyiafjallajökull volcano erupted disrupting air traffic all over Europe and the North Atlantic for weeks. Between 2008 and 2013, the long-lasting eruption of Chaitén volcano in Chile produced plumes 14-20 km high reaching the coast of Argentina and causing ash fallout as far as 800 km from the vent, and the continuously erupting volcanoes of the Kamchatka Peninsula and of the Aleutian arc have caused often treats to air traffic. The eruption of Pinatubo (Philippines) in 1991 had a strong impact all over the globe, causing significant and measurable atmospheric perturbation and impacting the world temperature. More recently, Mount Etna in Italy displayed tens of paroxysmal explosive episodes affecting the air traffic, viability, settlements, environment, and economics. Over time, several studies have been devoted to understanding what drives paroxysmal explosive activity. Owning to the treating characteristics, so far great efforts have been made trying to detect precursory signals, parameterize the phenomena, apply conceptual and experimental models, and assess the associated hazards. Published papers have used (i) geophysical data aimed at constraining the source region (depth, size, and position), (ii) gas chemistry and mineral geochemistry and petrology to identify the driving force of explosions and characterize the nature of the involved magmas, (iii) volcanology data and observations as well as ground-based and satellite remote sensing to quantify the volumes of erupted products and track the eruptive process, and (iv) laboratory experiments and plume models to characterize the rheology of the erupted products and forecast the impact of the eruptive clouds on the environment, climate, and the whole planet. In this book, we present a collection of ten papers written by 67 authors spanning from seismicity and ground deformation to geochemistry, volcanology and other geophysical techniques applied to the characterization of paroxysms at several active volcanoes.

Volcanism

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Publisher : Springer Science & Business Media
ISBN 13 : 9783540436508
Total Pages : 342 pages
Book Rating : 4.4/5 (365 download)

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Book Synopsis Volcanism by : Hans-Ulrich Schmincke

Download or read book Volcanism written by Hans-Ulrich Schmincke and published by Springer Science & Business Media. This book was released on 2004 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanic eruptions are the clear and dramatic expression of dynamic processes in planet Earth. The author, one of the most profound specialists in the field of volcanology, explains in a concise and easy to understand manner the basics and most recent findings in the field. Based on over 300 color figures and the model of plate tectonics, the book offers insight into the generation of magmas and the occurrence and origin of volcanoes. The analysis and description of volcanic structures is followed by process oriented chapters discussing the role of magmatic gases as well as explosive mechanisms and sedimentation of volcanic material. The final chapters deal with the forecast of eruptions and their influence on climate. Students and scientists of a broad range of fields will use this book as an interesting and attractive source of information. Laypeople will find it a highly accessible and graphically beautiful way to acquire a state-of-the-art foundation in this fascinating field. "Volcanism by Hans-Ulrich Schmincke has photos of the best quality I have ever seen in a text on the subject... In addition, the schematic figures in their wide range of styles are clear, colorful, and simplified to emphasize the most important factors while including all significant features... "I have really enjoyed reading and rereading Schmincke’s book. It fills a great gap in texts available for teaching any basic course in volcanology. No other book I know of has the depth and breadth of Volcanism... I have shared Volcanism with my colleagues to their significant benefit, and I am more convinced of its value for a broad range of Earth and planetary scientists. Undoubtedly, I will use Volcanism for my upcoming courses in volcanology. I will never hesitate to recommend it to others. Many geoscientists from very different subdisciplines will benefit from adding the book to their personal libraries. Schmincke has done us all a great service by undertaking the grueling task of writing the book – and it is much better that he alone wrote it." Stanley N. Williams, ASU Tempe, AZ (Physics Today, April 2005) "Schmincke is a German volcanologist with an international reputation, and he has done us all a great favour because he sensibly channelled his fascination with volcanoes into writing this beautifully illustrated book... [he] tackles the entire geological setting of volcanoes within the earth and the processes that form them... And, with more than 400 colour illustrations, including a huge number of really excellent new diagrams, cutaway models and maps, plus a rich glossary and references, this book is accessible to anyone with an interest in the subject." New Scientist (March 2004) "The science of volcanology has made tremendous progress over the past 40 years, primarily because of technological advances and because each tragic eruption has led researchers to recognize the processes behind such serious hazards. Yet scientists are still learning a great deal because of photographs that either capture those processes in action or show us the critical factors left behind in the rock record.Volcanism by Hans-Ulrich Schmincke has photos of the best quality I have ever seen in a text on the subject. I found myself wishing that I had had the photo of Nicaragua’s Masaya volcano, which was the subject of my dissertation, but it was Schmincke who was able to include it in his book. In addition, the schematic figures in their wide range of styles are clear, colorful, and simplified to emphasize the most important factors while including all significant features. The book’s paper is of such high quality that at times I felt I had turned two pages rather than one. I have really enjoyed reading and rereading Schmincke’s book. It fills a great gap in texts available for teaching any basic course in volcanology. No other book I know of has the depth and breadth of Volcanism. I was disappointed that the text did not arrive on my desk until last August, when it was too late for me to choose it for my course in volcanology. I am also disappointed about another fact—the book’s binding is already becoming tattered because of my intense use of it! Schmincke is a volcanologist who, in 1967, first published papers on sedimentary rocks of volcanic origin, the direction traveled by lava flows millions of years ago, and the structures preserved in explosive ignimbrites, or pumice-flow deposits, that reveal important details of their formation. Since then, his studies in Germany’s Laacher See, the Canary Islands, the Troodos Ophiolite of Cyprus, and many other regions have forged great fundamental advances. Such contributions have been recognized with his receipt of several international awards and clearly give him a strong base for writing the book. However, as a scientist who has focused on the challenges of monitoring the very diverse activities of volcanoes, I think that the text’s overriding emphasis on the rock record has its cost. The group of scientists who are struggling with their goals to reduce or mitigate the hazards of the eruptions of tomorrow need to learn more about the options of technology, instrumentation, and methodology that are currently available. More than 500 million people live near the more than 1500 known active volcanoes and are constantly facing serious threats of eruptions. An extremely energetic earthquake caused the horrific tsunamis of 2004. However, the tsunamis of 1792, 1815, and 1883, which were caused by the eruptions of Japan’s Unzen volcano and Indonesia’s Tambora and Krakatau volcanoes, each took a similar toll. " ( Stanley N. Williams, PHYSICS TODAY, April 2005)

Modeling Volcanic Processes

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Publisher : Cambridge University Press
ISBN 13 : 052189543X
Total Pages : 433 pages
Book Rating : 4.5/5 (218 download)

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Book Synopsis Modeling Volcanic Processes by : Sarah A. Fagents

Download or read book Modeling Volcanic Processes written by Sarah A. Fagents and published by Cambridge University Press. This book was released on 2013-03-14 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced textbook and reference resource examining the physics of volcanic behavior and the state of the art in modeling volcanic processes.

Volcano-Tectonic Processes

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Publisher : Springer Nature
ISBN 13 : 3030659682
Total Pages : 568 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Volcano-Tectonic Processes by : Valerio Acocella

Download or read book Volcano-Tectonic Processes written by Valerio Acocella and published by Springer Nature. This book was released on 2021-05-11 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanoes have terrified and, at the same time, fascinated civilizations for thousands of years. Many aspects of volcanoes, most notably the eruptive processes and the compositional variations of magma, have been widely investigated for several decades and today constitute the core of any volcanology textbook. Nevertheless, in the last two decades, boosted by the availability of volcano monitoring data, there has been an increasing interest in the pre-eruptive processes related to the shallow accumulation and to the transfer of magma approaching the surface, as well as in the resulting structure of volcanoes. These are innovative and essential aspects of modern volcanology and, as driving volcanic unrest, their understanding also improves hazard assessment and eruption forecasting. So far, the significant progress made in unravelling these volcano-tectonic processes has not been supported by a comprehensive overview. This monograph aims at filling this gap, describing the pre-eruptive processes related to the structure, deformation and tectonics of volcanoes, at the local and regional scale, in any tectonic setting. The monograph is organized into three sections (“Fundamentals”, “Magma migration towards the surface” and “The regional perspective”), consisting of thirteen chapters that are lavishly illustrated. The reader is accompanied in a journey within the volcano factory, discovering the processes associated with the shallow accumulation of magma and its transfer towards the surface, how these control the structure of volcanoes and their activity and, ultimately, improve our ability to estimate hazard and forecast eruption. The potential readership includes any academic, researcher and upper undergraduate student interested in volcanology, magma intrusions, structural geology, tectonics, geodesy, as well as geology and geophysics in general.

From Magma to Tephra

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Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis From Magma to Tephra by : Armin Freundt

Download or read book From Magma to Tephra written by Armin Freundt and published by Elsevier Science & Technology. This book was released on 1998 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary of insights into key aspects of explosive volcanic eruptions, arranged into chapters in order of the processes involved, from the hot magma releasing gases as it rises through the Earth's crust to the final deposition of materials upon the Earth's surface.

Stress Field Control of Eruption Dynamics

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Publisher : Frontiers Media SA
ISBN 13 : 2889452778
Total Pages : 133 pages
Book Rating : 4.8/5 (894 download)

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Book Synopsis Stress Field Control of Eruption Dynamics by : Roberto Sulpizio

Download or read book Stress Field Control of Eruption Dynamics written by Roberto Sulpizio and published by Frontiers Media SA. This book was released on 2017-10-10 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing evidence supports the claim that stress changes play a fundamental role in triggering volcanic eruptions. Stress changes may vary in origin to include earthquakes, erosion and landslide processes, deglaciation, or tidal effects. The local stress can also change as response of magma influx from deeper reservoirs and an increase of the magma/gas pressure. The stress transfer may be of great importance in reawakening a dormant system. As an example, significant statistical correlation of large earthquakes and eruptions in time and space was suggested in many works. The interaction may be two-fold; where magma intrusions may change the stress at active faults and trigger earthquakes, while tectonic earthquakes may affect the magmatic system and change the eruption activity. The change in local tectonic stress has been claimed as trigger of large ignimbrite eruptions or for controlling the eruptive style of explosive eruptions. Sometimes volcano systems that are nested or closely located may become active in chorus; neighbouring volcanoes may interact in the sense that one volcano triggers its neighbouring volcano. However, although there is ample evidence of concurrence, the processes of interacting volcanoes and near- to far-field tectonic stress are not well understood. Some studies suggest that volcanic eruptions are triggered if compressive stress acts at the magma system and “squeezes” out magma. Other studies suggest that extensional stress fields facilitate magma rise and thus encourage eruptions, or that fluctuating compression and extension during the passing of seismic waves trigger eruptions. This research topic tries to address some of the important open questions in interaction between stress field and volcanic eruption, though both review papers and new contributions.

Magmatic Drivers of Explosive Volcanism

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Magmatic Drivers of Explosive Volcanism by : Charlotte Devitre

Download or read book Magmatic Drivers of Explosive Volcanism written by Charlotte Devitre and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explosive volcanic eruptions can severely affect the safety and survival of human populations. For this reason, studying the factors that play a role in modulating the explosivity of volcanic eruptions, though difficult, is of utmost importance. These parameters interplay with each other and may include magmatic factors like magma composition and mixing, pre-eruptive volatile content (CO2 and H2O), volatile solubility and exsolution, viscosity and temperature or external factors such as crustal properties, tectonic regime and stress fields, conduit, and vent geometry, as well as decompression rates. Magma recharge and mixing can be a trigger for explosive eruptions due to stark contrasts in density, viscosity, composition, and temperature and which can result in sudden exsolution of dissolved volatiles. Meanwhile, volatile species such as CO2 and H2O play particularly important roles in driving the ascent of magmas towards the surface, controlling the explosivity of volcanic eruptions and ensuring the viability of life on Earth. Volatiles can be challenging to study as magmas degas upon ascent and the record of pre-eruptive volatiles can often be lost. However, crystals growing from magmas can trap fluid and melt inclusions (MI), which preserve a record of pre and syn-eruptive volatile evolution from ascent to eruption. Though their value has long been proven, there remains a multiplicity of challenges associated with MI studies, which when left unaddressed, can yield analyses with uncertainties significant enough to question their validity. Here, I approach three central issues to MI studies, propose new methods to address them and apply these methods to the study of mafic explosive intraplate eruptions at Fogo volcano in Cabo Verde. Additionally, I investigate the role of magma mixing in triggering of explosive eruptions at Turrialba volcano, Costa Rica. In Chapter 1, our chemical analyses of fresh glasses and minerals from the explosive eruptions of 2016-2017 at Turrialba volcano, in Costa Rica, indicated evidence for pervasive two-stage chaotic mixing of mafic to rhyolitic magmas, likely linked to the increased explosivity of these events. In Chapter 2, we present a novel high-precision and high-accuracy fluid density calibration apparatus for Raman Spectroscopy permitting high-quality measurements of CO2 in fluid and MI vapor bubbles, including those with bulk densities in the miscibility gap at room temperature. \In Chapter 3, we present an in-depth analysis of the effects of laser heating on measurements of MI vapor bubbles containing CO2 as liquid and vapor hosted in olivine and the pitfalls of failing to identify the presence of multi-phase CO2 in them. Finally, in Chapter 4, we apply our new Raman methods to the study of three mafic explosive intraplate eruptions from Pico do Fogo volcano in Cabo Verde and explore the role of CO2 in driving the ascent of mafic intraplate magmas from the mantle. We also use X-Ray Computed Tomography on MIs to address the third critical aspect of MI studies that is often the largest source of error: MI volumes.

Fundamentals of Physical Volcanology

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Author :
Publisher : Wiley-Blackwell
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Fundamentals of Physical Volcanology by : Elisabeth Ann Parfitt

Download or read book Fundamentals of Physical Volcanology written by Elisabeth Ann Parfitt and published by Wiley-Blackwell. This book was released on 2008-02-11 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers an overview of the processes that control when and how volcanoes erupt. It explains how different areas of science have been combined to reach our knowledge of volcanic systems. It includes an introduction to eruption types, an outline of the development of physical volcanology, and much more.

Modeling Volcanic Processes

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Publisher :
ISBN 13 : 9781107254053
Total Pages : 421 pages
Book Rating : 4.2/5 (54 download)

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Book Synopsis Modeling Volcanic Processes by : Sarah A. Fagents

Download or read book Modeling Volcanic Processes written by Sarah A. Fagents and published by . This book was released on 2013 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced textbook and reference resource examining the physics of volcanic behavior and the state of the art in modeling volcanic processes.

Magmatic Rifting and Active Volcanism

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Publisher :
ISBN 13 : 9781862391345
Total Pages : 374 pages
Book Rating : 4.3/5 (913 download)

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Book Synopsis Magmatic Rifting and Active Volcanism by : Tim J. Wright

Download or read book Magmatic Rifting and Active Volcanism written by Tim J. Wright and published by . This book was released on 2016 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major rifting episode began in the Afar region of northern Ethiopia in September 2005. Over a ten-day period, c.2.5 km3 of magma were intruded along a 60 km-long dyke separating the Arabian and Nubian plates. Over the next five years, a further 13 dyke intrusions caused continued extension, eruptions and seismicity. This activity led to a renewed international focus on the role of magmatism in rifting. This work brings together articles that explore the role of magmatism in rifting, from the initiation of continental break-up through to full seafloor spreading. We also explore the hazards related to rifting and the associated volcanism. This work has implications for our understanding of how continents break-up and the associated distribution of resources in rift basins and continental margins.

Causes and Consequences of Coupled Crystallization and Vesiculation in Ascending Mafic Magmas

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Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Causes and Consequences of Coupled Crystallization and Vesiculation in Ascending Mafic Magmas by : Amanda N. Lindoo

Download or read book Causes and Consequences of Coupled Crystallization and Vesiculation in Ascending Mafic Magmas written by Amanda N. Lindoo and published by . This book was released on 2017 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transitions in eruptive style and eruption intensity in mafic magmas are poorly understood. While silicic systems are the most researched and publicized due to their explosive character, mafic volcanoes remain the dominant form of volcanism on the earth. Eruptions are typically effusive, but changes in flow behavior can result in explosive, ash generating episodes. The efficiency of volatiles to degas from an ascending magma greatly influences eruption style. It is well known that volatile exsolution in magmas is a primary driving force for volcanic eruptions, however the roles vesicles and syn-eruptive crystallization play in eruption dynamics are poorly understood. Permeability development, which occurs when gas bubbles within a rising magma form connected pathways, has been suspected to influence eruption style and intensity. Numerous investigations on natural eruptive products, experimental samples, and analog experiments have extended the understanding of permeability development and fragmentation processes. However, these studies have focused on silicic, high viscosity, crystal-poor magmas. Little progress has been made in understanding fragmentation mechanisms in mafic or alkali magmas. Mafic systems involve lower viscosity magmas that often form small crystals, also known as microlites, during ascent. Because the merging of bubbles in magma is mitigated by melt viscosity, it is predicted that permeability development in mafic magma will occur at lower bubble volume fractions than in silicic magma. However, no study has been performed on experimental samples to provide evidence for this hypothesis. Furthermore, it is unknown how microlites affect the degassing process in terms of facilitating or hindering permeability development. This thesis employs experimental petrology to: 1) experimentally observe how melt viscosity alone affects permeability development, 2) Understand the effects of syn-eruptive crystallization in vesiculating mafic magmas and synergizes these results to 3) relate experimental findings to the 2008 eruption of Kasatochi volcano.

Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing

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Publisher : National Academies Press
ISBN 13 : 0309454158
Total Pages : 135 pages
Book Rating : 4.3/5 (94 download)

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Book Synopsis Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing by : National Academies of Sciences, Engineering, and Medicine

Download or read book Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-07-24 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanic eruptions are common, with more than 50 volcanic eruptions in the United States alone in the past 31 years. These eruptions can have devastating economic and social consequences, even at great distances from the volcano. Fortunately many eruptions are preceded by unrest that can be detected using ground, airborne, and spaceborne instruments. Data from these instruments, combined with basic understanding of how volcanoes work, form the basis for forecasting eruptionsâ€"where, when, how big, how long, and the consequences. Accurate forecasts of the likelihood and magnitude of an eruption in a specified timeframe are rooted in a scientific understanding of the processes that govern the storage, ascent, and eruption of magma. Yet our understanding of volcanic systems is incomplete and biased by the limited number of volcanoes and eruption styles observed with advanced instrumentation. Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing identifies key science questions, research and observation priorities, and approaches for building a volcano science community capable of tackling them. This report presents goals for making major advances in volcano science.

Volcanic Successions Modern and Ancient

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Publisher : Springer Science & Business Media
ISBN 13 : 9400931670
Total Pages : 532 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Volcanic Successions Modern and Ancient by : R. Cas

Download or read book Volcanic Successions Modern and Ancient written by R. Cas and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of our aims in the book is to provide geologists with a sound basis for making their own well founded interpretations. For that reason we cover not only concepts about processes, and the nature of the products, but also methods and approaches that may be useful in analysing both modern and ancient successions. Most importantly, we treat the diversity of products in volcanic terrains as facies, and we use the method of facies analysis and interpretation as a means of constructing facies models for different volcanic settings. These models will, we hope, be useful as norms for comparison for workers in ancient terrains. The idea for this book came into being between 1981 and 1982 when J. V. W. came to Monash University to take up a Monash Postdoctoral Fellowship. During this period a short course on facies analysis in modern and ancient successions was put together, integrating J.V.W.'s extensive volcanological experience in numerous modern volcanic terrains with R.A.F.C.'s extensive sedimentological and volcanological experience in older volcanic and associated sedimentary successions in the Palaeozoic and Precambrian of Australia. The enthusiastic response from the participants to the first short course, taught in May 1982, and to subsequent annual re-runs, encouraged us to develop the short course notes into this book. The idea for both the short course and the book arose because we felt that there was no single source available that comprehensively attempted to address the problems of analysing, interpreting and understanding the complexity of processes, products and stratigraphy in volcanic terrains.

Volcano Deformation

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Publisher : Springer Science & Business Media
ISBN 13 : 3540493026
Total Pages : 470 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Volcano Deformation by : Daniel Dzurisin

Download or read book Volcano Deformation written by Daniel Dzurisin and published by Springer Science & Business Media. This book was released on 2006-11-24 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanoes and eruptions are dramatic surface man telemetry and processing, and volcano-deformation ifestations of dynamic processes within the Earth, source models over the past three decades. There has mostly but not exclusively localized along the been a virtual explosion of volcano-geodesy studies boundaries of Earth's relentlessly shifting tectonic and in the modeling and interpretation of ground plates. Anyone who has witnessed volcanic activity deformation data. Nonetheless, other than selective, has to be impressed by the variety and complexity of brief summaries in journal articles and general visible eruptive phenomena. Equally complex, works on volcano-monitoring and hazards mitiga however, if not even more so, are the geophysical, tion (e. g. , UNESCO, 1972; Agnew, 1986; Scarpa geochemical, and hydrothermal processes that occur and Tilling, 1996), a modern, comprehensive treat underground - commonly undetectable by the ment of volcano geodesy and its applications was human senses - before, during, and after eruptions. non-existent, until now. Experience at volcanoes worldwide has shown that, In the mid-1990s, when Daniel Dzurisin (DZ to at volcanoes with adequate instrumental monitor friends and colleagues) was serving as the Scientist ing, nearly all eruptions are preceded and accom in-Charge of the USGS Cascades Volcano Observa panied by measurable changes in the physical and tory (CVO), I first learned of his dream to write a (or) chemical state of the volcanic system. While book on volcano geodesy.