Quantifying Forces Controlling The 2004 2005 Retreat Mass Loss And Speed Up Of Kangerlussuaq Glacier Greenland From Remotely Sensed Data

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Quantifying Forces Controlling the 2004-2005 Retreat, Mass Loss, and Speed-up of Kangerlussuaq Glacier, Greenland from Remotely Sensed Data

Author : David Patrick McCormick (II.)
Publisher :
ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (973 download)

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Book Synopsis Quantifying Forces Controlling the 2004-2005 Retreat, Mass Loss, and Speed-up of Kangerlussuaq Glacier, Greenland from Remotely Sensed Data by : David Patrick McCormick (II.)

Download or read book Quantifying Forces Controlling the 2004-2005 Retreat, Mass Loss, and Speed-up of Kangerlussuaq Glacier, Greenland from Remotely Sensed Data written by David Patrick McCormick (II.) and published by . This book was released on 2015 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kangerlussuaq Glacier, in SE Greenland, is the largest outlet glacier on the east coast of Greenland, draining approximately 3% of the Greenland Ice Sheet (GrIS). In 2004/05 this glacier underwent a dramatic retreat, as well as acceleration and mass loss, indicating a significant change in ice dynamics. During this time, the ice velocity increased from 6-8 km/yr to 14 km/yr, resulting in a peak mass loss of 40 Gt/yr by 2005, approximately 20% of the mass loss of the whole SE GrIS. Other SE Greenland outlet glaciers exhibited synchronous acceleration, retreat and thinning, and thus in 2004/05 the mass loss from SE Greenland dominated the overall mass balance of the GrIS. My study investigated the possible causes of increased outlet glacier mass loss in this sector by reconstructing the surface history and using the force budget technique to quantify the forces that control the flow of Kangerlussuaq Glacier before and after its major acceleration event. I used multiple sets of remotely sensed data, including repeat stereo imagery from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on the Terra satellite and from the Satellite Pour l`Observation de la Terre (SPOT) satellite, as well as a bedrock DEM from radar observations provided by Center for Remote Sensing of Ice Sheets (CReSIS) to reconstruct the ice sheet surface topography and velocity in 2003 and 2006. These input data were then used to generate 2D force balance models. Previous studies have suggested that speed-up and thinning of Kangerlussuaq Glacier was caused by a collapse of the calving front in 2004/05 resulting in a loss of back-stress. However, my surface reconstruction revealed that thinning began in the summer of 2002; at least two years before the start of the rapid thinning and retreat of the calving front. This discovery was made possible by using the Surface Elevation Reconstruction And Change Detection (SERAC) method to combine the laser altimetry data and the stereo-image DEMs to improve the accuracy of the DEMs and to generate a high-resolution, accurate elevation change record. The force balance analysis showed only small changes in driving and resisting stresses between 2003 and 2006 despite the significant retreat. Therefore, I reject the hypothesis that the speed-up was the result of a collapsed calving front. My results suggest the speed-up was in part due to a change in the subglacial hydrology that caused a change in effective basal pressure. The 2003-2004 period showed below-average meltwater runoff that may have reduced water entering the subglacial drainage system. If subglacial drainage is through a network of tunnels, a reduction in the subglacial water flux would lower the effective basal pressure. Because the sliding velocity is inversely proportional to the effective pressure, this would increase the sliding speed. The increase in surface melt and runoff starting in 2005 would have increased the subglacial water flux again, and the resulting increase in effective pressure would have caused the glacier to slow down.

Quantifying and Characterizing Mass Loss from Icefields Using Remote Sensing

Author : Andrew K. Melkonian
Publisher :
ISBN 13 :
Total Pages : 624 pages
Book Rating : 4.:/5 (919 download)

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Book Synopsis Quantifying and Characterizing Mass Loss from Icefields Using Remote Sensing by : Andrew K. Melkonian

Download or read book Quantifying and Characterizing Mass Loss from Icefields Using Remote Sensing written by Andrew K. Melkonian and published by . This book was released on 2015 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glaciers outside the icesheets currently supply roughly the same amount of water to sea level rise (SLR) as Antarctica and Greenland and will likely constitute a significant fraction of SLR through 2100. SLR is one of the biggest challenges facing humanity, and much uncertainty remains regarding the contribution of glacier mass loss to SLR. Here we examine glaciers in the Patagonia region of southern Chile/Argentina, the Russian High Arctic (RHA) and Alaska, which have all contributed disproportionately to SLR, a trend that is expected to continue through 2100. The RHA is projected to be among the largest contributors, with total mass loss exceeding Alaska for 2006-2100 despite its smaller ice volume. We focus on several icefields, including two that have received relatively little attention, the Cordillera Darwin Icefield (CDI, 69.6? W, 54.6? S, 2,600 km2 of glaciated area) in the Patagonia region of southern Chile, and the Novaya Zemlya Icefield (NovZ, 65? W, 76? N, 22,100 km2 of glaciated area) in the Russian High Arctic. We also examine the Juneau Icefield (JIF, 58.3? N to 59.7? N, 3,830 km2) and Stikine Icefield (56.75? N to 58.5? N, 5,800 km2) in southeast Alaska. We produce high-resolution maps of surface elevation change rates (dh) and dt velocities for these icefields. dh dt are calculated by applying a weighted lin- ear regression to horizontally- and vertically-aligned digital elevation models (DEMs), revealing thinning patterns for individual glacier basins and allowing us to estimate total mass loss for each icefield. To our knowledge, the work presented here includes the first published study to use the technique of DEM time series to study mass loss of entire icefields. Velocities are measured by pixel-tracking applied to satellite image pairs, helping constrain the dynamic component of mass loss and detect acceleration. We provide a brief overview of the impact of changing various pixel-tracking parameters on velocity measurements, demonstrating, for example, how the ability to adjust parameters helps maximize coverage compared to working with fixed parameter values. We find an average mass loss rate at the CDI of -3.9"1.5 Gt yr-1 between 2000 and 2011, the first produced for this icefield. Three marine-terminating glaciers that cover 12% of the icefield area account for 31% of mass loss. Velocity measurements at the largest of these, the rapidly retreating Marinelli Glacier, constrain the lower bound on the annual calving flux as approximately 82"41% of the average mass loss rate for the glacier. The disproportionate mass loss contribution of the three tidewater glaciers, coupled with the high calving flux and retreat at Marinelli Glacier, provide evidence that dynamic mass loss is an important component of thinning at the CDI. At NovZ, we extend estimates of mass loss back to 1952 and up to the present. We find that the recent average thinning rate of -0.41"0.10 m water equivalent yr-1 (m w.e. yr-1, or elevation change at density of 1000 kg m-3) from 2012-2013/2014 is higher than the long-term average of -0.24"0.04 m w.e. yr-1 from 1952-2013/2014. Some of the increase is likely due to warming in the region, as recent thinning is higher than the long-term average at both land- and marine-terminating glaciers. There is also evidence of a dynamic component, because recent thinning, retreat and front velocities are all substantially greater at tidewater-terminating glaciers than land-terminating glaciers. The impact of ice dynamics is particularly apparent at Inostrantseva Glacier (INO), which ac- celerated at some point after 2006, leading to rapid retreat and thinning there. We compare our results at the CDI and NovZ with our dh dt and velocities for the JIF and Stikine in southeast Alaska. We explore how variations in climate, hypsometry and dynamics all contribute to the different magnitudes and patterns of mass loss at each icefield. The methods presented here for the assessment of icefield mass loss will help better constrain their contributions to SLR over the coming century.

Investigating Mass Loss and Changing Ice Dynamics of Arctic Ice Caps Using Remote Sensing

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

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Book Synopsis Investigating Mass Loss and Changing Ice Dynamics of Arctic Ice Caps Using Remote Sensing by : Whyjay Zheng

Download or read book Investigating Mass Loss and Changing Ice Dynamics of Arctic Ice Caps Using Remote Sensing written by Whyjay Zheng and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glacier thinning and retreat have accelerated globally in the last century and are the largest contributor to rising sea levels. For the Arctic region, observations and modeling results have shown that extensive warming is taking place. However, the recent glacier dynamics (mass balance and ice discharge) in many Arctic regions have not been well studied due to the remote nature of these glaciers.This thesis uses multiple types of satellite data to quantify the mass balance and ice discharge for three Arctic regions showing dramatic glacier change in recent decades possibly due to Arctic warming. The objective is to resolve the mass budget and velocity pattern on a per glacier basis and understand the mechanisms driving recent changes. To facilitate the entire workflow, our research team has developed the Cryosphere and Remote Sensing Toolkit (CARST) software, and I am the lead author. CARST provides useful python and bash scripts that use satellite imagery, particularly SAR and optical images, to monitor changes of glaciers and ice caps through time. The first study area is Franz Josef Land (FJL), Russia, which is currently subjected to a rapidly-warming climate in the Arctic. I combine surface elevation data derived from different sources and times, including the WorldView satellite series and the ArcticDEM data set (2011-2015), SPOT-5 (2007), CryoSat-2 (2011-2015), and a digitized cartographic map (1953). I calculate elevation change rate (dh/dt) in two different periods, and the results show a two-fold rate of ice loss over the past 60 years, from _2.18 ± 0.72 Gt/yr (1953-2011/2015 average) to _4.43 ± 0.78 Gt/yr (2011-2015). Despite being spatially variable, a trend of increased thinning from NE towards SW is discovered, suggesting a link to the local gradient in temperature and precipitation. Ice loss is mostly focused on marine-terminating glaciers probably due to the interaction between glaciers and warming ocean water. These retreating glaciers generated a new island in 2016 and more islands are likely to emerge in the foreseeable future as FJL's ice loss has reached an unprecedented rate. The research focus in the following chapter shifts to the neighboring archipelago called Severnaya Zemlya, Russia. A surge-like collapse initiated in 2013 in Vavilov Ice Cap, one of many ice caps in this region. By spring 2019, this ice cap had lost 9.5 Gt of ice. Using time series of surface elevation and glacier velocity derived from multiple satellite data sets such as WorldView (elevation), ArcticDEM (elevation), ASTER (elevation), Landsat 8 (velocity), Sentinel-1, (velocity), Sentinel-2 (velocity), Radarsat-2 (velocity), and ALOS-2 (velocity), I identify a shift of flow pattern starting in 2017 when shear margins formed within the grounded marine piedmont fan. Multiple summer speedups occurred after the new flow pattern formed, possibly with the aid of basal lubrication due to surface melt. With the analysis using multiple physical models, it is suggested that the collapsed ice cap has entered a new ice stream-like regime in which diffusion of surface thinning controls the glacier dynamics. This is the first documented case of an ice stream-like feature ever being formed, and this glacier now flows at a higher speed and drains the ice cap more efficiently. To publicize the findings and their scientific implications, I made two videos showing the temporal changes of the terminus position and speed pattern, which are available on Youtube. In the last chapter, I further develop a physical framework for the glacier perturbation model to understand how different glaciers respond to basal lubrication. The modified 1-D flowline model suggests two physical quantities, Péclet number (Pe) and a value dubbed J0, governing glacier vulnerability to basal lubrication. To test the model, I use the Ice Thickness Models Intercomparison eXperiment (ITMIX) data set and the NASA MEaSUREs ITS_LIVE data set. ITMIX contains velocity, elevation, and ice thickness data from Austfonna Ice Cap, Svalbard, where multiple glacier collapse events occurred within the past 10 years. I calculate Pe and |J0| using data from the ITMIX and compare them with the speed change revealed by the ITS_LIVE data set. The results show that a low Pe and a high |J0| correspond to the high magnitude of glacier speedup during 1995-2018, as suggested by the model prediction. My analysis implies that basal lubrication can lead to a prolonged or even permanent change of glacier dynamics for some glaciers. These "weak" glaciers might be able to waste ice more rapidly than we thought, posing a warning of an underestimated sea level rise projection.

Interacting Climates of Ocean Basins

Author : Carlos R. Mechoso
Publisher : Cambridge University Press
ISBN 13 : 1108492703
Total Pages : 359 pages
Book Rating : 4.1/5 (84 download)

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Book Synopsis Interacting Climates of Ocean Basins by : Carlos R. Mechoso

Download or read book Interacting Climates of Ocean Basins written by Carlos R. Mechoso and published by Cambridge University Press. This book was released on 2020-11-26 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of interactions between the climates of different ocean basins and their key contributions to global climate variability and change. Providing essential theory and discussing outstanding examples as well as impacts on monsoons, it a useful resource for graduate students and researchers in the atmospheric and ocean sciences.

The Physics of Glaciers

Author : W. S. B. Paterson
Publisher : Elsevier
ISBN 13 : 1483287254
Total Pages : 491 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis The Physics of Glaciers by : W. S. B. Paterson

Download or read book The Physics of Glaciers written by W. S. B. Paterson and published by Elsevier. This book was released on 2016-10-27 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated and expanded version of the second edition explains the physical principles underlying the behaviour of glaciers and ice sheets. The text has been revised in order to keep pace with the extensive developments which have occurred since 1981. A new chapter, of major interest, concentrates on the deformation of subglacial till. The book concludes with a chapter on information regarding past climate and atmospheric composition obtainable from ice cores.

Dynamics of the West Antarctic Ice Sheet

Author : C.J. van der Veen
Publisher : Springer Science & Business Media
ISBN 13 : 9400937458
Total Pages : 376 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Dynamics of the West Antarctic Ice Sheet by : C.J. van der Veen

Download or read book Dynamics of the West Antarctic Ice Sheet written by C.J. van der Veen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few scientists doubt the prediction that the antropogenic release of carbon dioxide in the atmosphere will lead to some warming of the earth's climate. So there is good reason to investigate the possible effects of such a warming, in dependence of geographical and social economic setting. Many bodies, governmental or not, have organized meetings and issued reports in which the carbon dioxide problem is defined, reviewed, and possible threats assessed. The rate at which such reports are produced still increases. However, while more and more people are getting involved in the 'carbon dioxide business', the number of investigators working on the basic problems grows, in our view, too slowly. Many fundamental questions are still not answered in a satisfactory way, and the carbon dioxide building rests on a few thin pillars. One such fundamental question concerns the change in sea level associated with a climatic warming of a few degrees. A number of processes can be listed that could all lead to changes of the order of tens of centimeters (e. g. thermal expansion, change in mass balance of glaciers and ice sheets). But the picture of the carbon dioxide problem has frequently be made more dramatic by suggesting that the West Antarctic Ice Sheet is unstable, implying a certain probability of a 5 m higher sea-level stand within a few centuries.

Critical Zones

Author : Bruno Latour
Publisher : MIT Press
ISBN 13 : 0262044455
Total Pages : 473 pages
Book Rating : 4.2/5 (62 download)

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Book Synopsis Critical Zones by : Bruno Latour

Download or read book Critical Zones written by Bruno Latour and published by MIT Press. This book was released on 2020-10-13 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artists and writers portray the disorientation of a world facing climate change. This monumental volume, drawn from a 2020 exhibition at the ZKM Center for Art and Media, portrays the disorientation of life in world facing climate change. It traces this disorientation to the disconnection between two different definitions of the land on which modernizing humans live: the sovereign nation from which they derive their rights, and another one, hidden, from which they gain their wealth—the land they live on, and the land they live from. Charting the land they will inhabit, they find not a globe, not the iconic “blue marble,” but a series of critical zones—patchy, heterogenous, discontinuous. With short pieces, longer essays, and more than 500 illustrations, the contributors explore the new landscape on which it may be possible for humans to land—what it means to be “on Earth,” whether the critical zone, the Gaia, or the terrestrial. They consider geopolitical conflicts and tools redesigned for the new “geopolitics of life forms.” The “thought exhibition” described in this book can opens a fictional space to explore the new climate regime; the rest of the story is unknown. Contributors include Dipesh Chakrabarty, Pierre Charbonnier, Emanuele Coccia, Vinciane Despret, Jerôme Gaillarde, Donna Haraway, Joseph Leo Koerner, Timothy Lenton, Richard Powers, Simon Schaffer, Isabelle Stengers, Bronislaw Szerszynski, Jan A. Zalasiewicz, Siegfried Zielinski Copublished with ZKM | Center for Art and Media Karlsruhe

Quaternary Glaciation History and Glaciology of Jakobshavn Isbrae and the Disko Bugt Region, West Greenland

Author : Anker Weidick
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Quaternary Glaciation History and Glaciology of Jakobshavn Isbrae and the Disko Bugt Region, West Greenland by : Anker Weidick

Download or read book Quaternary Glaciation History and Glaciology of Jakobshavn Isbrae and the Disko Bugt Region, West Greenland written by Anker Weidick and published by . This book was released on 2007 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Long-term Environmental Change in Arctic and Antarctic Lakes

Author : Reinhard Pienitz
Publisher : Springer Science & Business Media
ISBN 13 : 1402021267
Total Pages : 579 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Long-term Environmental Change in Arctic and Antarctic Lakes by : Reinhard Pienitz

Download or read book Long-term Environmental Change in Arctic and Antarctic Lakes written by Reinhard Pienitz and published by Springer Science & Business Media. This book was released on 2007-11-08 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns about the effects of global climate change have focused attention on the vulnerability of circumpolar regions. This book offers a synthesis of the spectrum of techniques available for generating long-term environmental records from circumpolar lakes.

Arctic Ice Shelves and Ice Islands

Author : Luke Copland
Publisher : Springer
ISBN 13 : 9402411011
Total Pages : 426 pages
Book Rating : 4.4/5 (24 download)

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Book Synopsis Arctic Ice Shelves and Ice Islands by : Luke Copland

Download or read book Arctic Ice Shelves and Ice Islands written by Luke Copland and published by Springer. This book was released on 2017-05-30 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the current state of knowledge of Arctic ice shelves, ice islands and related features. Ice shelves are permanent areas of ice which float on the ocean surface while attached to the coast, and typically occur in very cold environments where perennial sea ice builds up to great thickness, and/or where glaciers flow off the land and are preserved on the ocean surface. These landscape features are relatively poorly studied in the Arctic, yet they are potentially highly sensitive indicators of climate change because they respond to changes in atmospheric, oceanic and glaciological conditions. Recent fracturing and breakup events of ice shelves in the Canadian High Arctic have attracted significant scientific and public attention, and produced large ice islands which may pose a risk to Arctic shipping and offshore infrastructure. Much has been published about Antarctic ice shelves, but to date there has not been a dedicated book about Arctic ice shelves or ice islands. This book fills that gap.

Fundamentals of Glacier Dynamics, Second Edition

Author : C.J. van der Veen
Publisher : CRC Press
ISBN 13 : 1439835667
Total Pages : 407 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Fundamentals of Glacier Dynamics, Second Edition by : C.J. van der Veen

Download or read book Fundamentals of Glacier Dynamics, Second Edition written by C.J. van der Veen and published by CRC Press. This book was released on 2013-03-26 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measuring, monitoring, and modeling technologies and methods changed the field of glaciology significantly in the 14 years since the publication of the first edition of Fundamentals of Glacier Dynamics. Designed to help readers achieve the basic level of understanding required to describe and model the flow and dynamics of glaciers, this second edition provides a theoretical framework for quantitatively interpreting glacier changes and for developing models of glacier flow. See What’s New in the Second Edition: Streamlined organization focusing on theory, model development, and data interpretation Introductory chapter reviews the most important mathematical tools used throughout the remainder of the book New chapter on fracture mechanics and iceberg calving Consolidated chapter covers applications of the force-budget technique using measurements of surface velocity to locate mechanical controls on glacier flow The latest developments in theory and modeling, including the addition of a discussion of exact time-dependent similarity solutions that can be used for verification of numerical models The book emphasizes developing procedures and presents derivations leading to frequently used equations step by step to allow readers to grasp the mathematical details as well as physical approximations involved without having to consult the original works. As a result, readers will have gained the understanding needed to apply similar techniques to somewhat different applications. Extensively updated with new material and focusing more on presenting the theoretical foundations of glacier flow, the book provides the tools for model validation in the form of analytical steady-state and time-evolving solutions. It provides the necessary background and theoretical foundation for developing more realistic ice-sheet models, which is essential for better integration of data and observations as well as for better model development.

Structure from Motion in the Geosciences

Author : Jonathan L. Carrivick
Publisher : John Wiley & Sons
ISBN 13 : 1118895827
Total Pages : 208 pages
Book Rating : 4.1/5 (188 download)

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Book Synopsis Structure from Motion in the Geosciences by : Jonathan L. Carrivick

Download or read book Structure from Motion in the Geosciences written by Jonathan L. Carrivick and published by John Wiley & Sons. This book was released on 2016-07-15 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure from Motion with Multi View Stereo provides hyperscale landform models using images acquired from standard compact cameras and a network of ground control points. The technique is not limited in temporal frequency and can provide point cloud data comparable in density and accuracy to those generated by terrestrial and airborne laser scanning at a fraction of the cost. It therefore offers exciting opportunities to characterise surface topography in unprecedented detail and, with multi-temporal data, to detect elevation, position and volumetric changes that are symptomatic of earth surface processes. This book firstly places Structure from Motion in the context of other digital surveying methods and details the Structure from Motion workflow including available software packages and assessments of uncertainty and accuracy. It then critically reviews current usage of Structure from Motion in the geosciences, provides a synthesis of recent validation studies and looks to the future by highlighting opportunities arising from developments in allied disciplines. This book will appeal to academics, students and industry professionals because it balances technical knowledge of the Structure from Motion workflow with practical guidelines for image acquisition, image processing and data quality assessment and includes case studies that have been contributed by experts from around the world.

Polar Bears

Author : IUCN/SSC Polar Bear Specialist Group. Working Meeting
Publisher : IUCN
ISBN 13 : 9782831709598
Total Pages : 202 pages
Book Rating : 4.7/5 (95 download)

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Book Synopsis Polar Bears by : IUCN/SSC Polar Bear Specialist Group. Working Meeting

Download or read book Polar Bears written by IUCN/SSC Polar Bear Specialist Group. Working Meeting and published by IUCN. This book was released on 2006 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings provide an overview of the ongoing research and management activities on polar bears in the circumpolar arctic. Together with the previous 13 proceedings, they provide an historic record of international efforts in protecting, studying and managing polar bears. With recent documentation of how warmer arctic climate might affect the sea ice habitat of polar bears, the predictions of even warmer climate in the next decades, and documentation of effects on polar bears subpopulations, an evaluation of the red list status of polar bear subpopulations was followed by an increased conservation designation of vulnerable. In the complexity of possible interactions between climate change, local harvest, and in some areas high levels of pollutants, an increased level of international cooperation was advocated.

Submarine Geomorphology

Author : Aaron Micallef
Publisher : Springer
ISBN 13 : 3319578529
Total Pages : 554 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Submarine Geomorphology by : Aaron Micallef

Download or read book Submarine Geomorphology written by Aaron Micallef and published by Springer. This book was released on 2017-07-18 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on the current state of knowledge of submarine geomorphology aims to achieve the goals of the Submarine Geomorphology working group, set up in 2013, by establishing submarine geomorphology as a field of research, disseminating its concepts and techniques among earth scientists and professionals, and encouraging students to develop their skills and knowledge in this field. Editors have invited 30 experts from around the world to contribute chapters to this book, which is divided into 4 sections – (i) Introduction & history, (ii) Data & methods, (ii) Submarine landforms & processes and (iv) Conclusions & future directions. Each chapter provides a review of a topic, establishes the state-of-the-art, identifies the key research questions that need to be addressed, and delineates a strategy on how to achieve this. Submarine geomorphology is a priority for many research institutions, government authorities and industries globally. The book is useful for undergraduate and graduate students, and professionals with limited training in this field.

Exploring Greenland

Author : Ronald E. Doel
Publisher : Springer
ISBN 13 : 1137596880
Total Pages : 316 pages
Book Rating : 4.1/5 (375 download)

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Book Synopsis Exploring Greenland by : Ronald E. Doel

Download or read book Exploring Greenland written by Ronald E. Doel and published by Springer. This book was released on 2016-07-06 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using newly declassified documents, this book explores why U.S. military leaders after World War II sought to monitor the far north and understand the physical environment of Greenland, a crucial territory of Denmark. It reveals a fascinating yet little-known realm of Cold War intrigue and a delicate diplomatic duet between a smaller state and a superpower amid a time of intense global pressures. Written by scholars in Denmark and the United States, this book explores many compelling topics. What led to the creation of the U.S. Thule Air Base in Greenland, one of the world’s largest, and why did the U.S. build a nuclear-powered city under Greenland’s ice cap? How did Danish concern about sovereignty shape scientific research programs in Greenland? Also explored here: why did Denmark’s most famous scientist, Inge Lehmann, became involved in research in Greenland, and what international reverberations resulted from the crash of a U.S. B-52 bomber carrying four nuclear weapons near Thule in January 1968?

MOUNTAIN GEOMORPHOLOGY

Author : Phil Owens
Publisher : Routledge
ISBN 13 : 1444119060
Total Pages : 320 pages
Book Rating : 4.4/5 (441 download)

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Book Synopsis MOUNTAIN GEOMORPHOLOGY by : Phil Owens

Download or read book MOUNTAIN GEOMORPHOLOGY written by Phil Owens and published by Routledge. This book was released on 2014-02-04 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountains represent one of the most inspiring and attractive natural features on the surface of the earth. Visually, they dominate the landscape. However, the increasing realization of the fragility of mountain areas because of changes in land use, management and climate, combined with an understanding of their importance for water and other natural resources, has resulted in a growing interest in mountain environments in recent years. Hence, Mountain Geomorphology represents a timely and unique contribution to the literature. Written by a team of international experts, this book is divided into three sections, which consider historical, functional and applied mountain geomorphology from both global and local perspectives. Historical mountain geomorphology focuses on the evolution of landforms. Functional mountain geomorphology emphasises the interaction between processes and landforms, while applied mountain geomorphology concerns the interrelationships between geomorphological processes and society. Mountain Geomorphology is a valuable source of information for students studying mountain geomorphology, and also for academics and research scientists interested in mountain environments.

Climate, Society and Subsurface Politics in Greenland

Author : Mark Nuttall
Publisher :
ISBN 13 : 9780367218911
Total Pages : 224 pages
Book Rating : 4.2/5 (189 download)

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Book Synopsis Climate, Society and Subsurface Politics in Greenland by : Mark Nuttall

Download or read book Climate, Society and Subsurface Politics in Greenland written by Mark Nuttall and published by . This book was released on 2019-01-17 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once imagined as a place on the very edge of the world, Greenland is now viewed as being at the epicentre of climate change. At the same time, international attention is focused on opportunities for oil and mineral development, seemingly made possible as the inland ice melts and sea ice disappears, revealing geological riches and making access to remote areas easier. In this book, Mark Nuttall takes the reader on a journey through landscapes, seascapes and icescapes of memory, movement and anticipation. Unravelling the entanglements of climate change, indigenous sovereignty and the politics surrounding non-renewable resource extraction, he describes how the country is on the verge of major environmental, political and social transformations as it aspires to greater autonomy and possible independence from Denmark. At the heart of this is discussion about how resources and the environment are given meaning and how they have become subject to intense political and ideological struggle. Climate, Society and Subsurface Politics in Greenland: Under the Great Ice is a key resource for academics, practitioners and students of anthropology, geography, development studies, political ecology and polar studies.