Ice Sheet Hydrology From Observations

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Ice Sheet Hydrology from Observations

Author : Peter Jansson
Publisher :
ISBN 13 :
Total Pages : 59 pages
Book Rating : 4.:/5 (72 download)

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Book Synopsis Ice Sheet Hydrology from Observations by : Peter Jansson

Download or read book Ice Sheet Hydrology from Observations written by Peter Jansson and published by . This book was released on 2010 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report summarizes our understanding of ice sheet hydrology as reported on observations from Antarctica and Greenland. Much of our general understanding of ice sheet hydrological processes are based on work performed on valley glaciers. Since processes do not differ in function but perhaps in magnitude, the understanding gained from smaller glaciers work applies to ice sheets. Hence, this report does not deal with such basic processes. Glacier hydrological investigations on ice sheets have been few but are perhaps accelerating in numbers with the increased focus on both Greenland and Antarctica from the scientific community in the light of effects from climate change. The process oriented studies carried out over the past 50 years or so have not generally been much applied to ice sheets and observations on the morphology of ice sheet and valley glacier hydrological systems have not been connected although most glacier hydrologists would not consider such parallels a stretch of their imagination. Much of the new studies on ice sheet hydrology, thus far, fits in two categories. One concerns verification of well-documented processes but on an ice sheet scale; the other concerns ice sheet specific features. These categories constitute the basis for this report"--Pref.

Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling

Author : W. Tad Pfeffer
Publisher : Frontiers Media SA
ISBN 13 : 2889456196
Total Pages : 160 pages
Book Rating : 4.8/5 (894 download)

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Book Synopsis Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling by : W. Tad Pfeffer

Download or read book Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling written by W. Tad Pfeffer and published by Frontiers Media SA. This book was released on 2018-11-08 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Melt takes place where the surface of glaciers or ice sheets interacts with the atmosphere. While the processes governing surface melt are fairly well understood, the pathways of the meltwater, from its origin to the moment it leaves a glacier system, remain enigmatic. It is not even guaranteed that meltwater leaves a glacier or ice sheet. On Greenland, for example, only slightly more than 50% of the meltwater runs off. The remainder mostly refreezes within the so-called firn cover of the ice sheet. This eBook contains 11 studies which tackle the challenge of understanding meltwater retention in snow and firn from various angles. The studies focus both on mountain glaciers and on the Greenland ice sheet and address challenges such as measuring firn properties, quantifying their influence on meltwater retention, modelling firn processes and meltwater refreezing as well as unravelling the mechanisms within the recently discovered Greenland firn aquifers.

Mass Balance of the Cryosphere

Author : Jonathan L. Bamber
Publisher : Cambridge University Press
ISBN 13 : 9780521808958
Total Pages : 672 pages
Book Rating : 4.8/5 (89 download)

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Book Synopsis Mass Balance of the Cryosphere by : Jonathan L. Bamber

Download or read book Mass Balance of the Cryosphere written by Jonathan L. Bamber and published by Cambridge University Press. This book was released on 2004-02-12 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed and comprehensive overview of observational and modelling techniques for all climate change, environmental science and glaciology researchers.

Fundamentals of Glacier Dynamics

Author : C.J. van der Veen
Publisher : CRC Press
ISBN 13 : 1439835675
Total Pages : 399 pages
Book Rating : 4.4/5 (398 download)

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

Download or read book Fundamentals of Glacier Dynamics written by C.J. van der Veen and published by CRC Press. This book was released on 2013-03-26 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change Fourth Assessment Report (2007) acknowledged that current ice sheet models do not adequately treat the dynamic response of ice sheets to climate change. This second edition addresses these issues through the addition of new chapters covering glacier instabilities, the interpretation of observations, and ice sheets and sea level. Another new chapter covers glacier mass balance. The text also 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.

Hydrologic Dynamics of the Greenland Ice Sheet from Remote Sensing and Field Measurements

Author : Vena Chu
Publisher :
ISBN 13 :
Total Pages : 221 pages
Book Rating : 4.:/5 (926 download)

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Book Synopsis Hydrologic Dynamics of the Greenland Ice Sheet from Remote Sensing and Field Measurements by : Vena Chu

Download or read book Hydrologic Dynamics of the Greenland Ice Sheet from Remote Sensing and Field Measurements written by Vena Chu and published by . This book was released on 2015 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current need for forecasting Greenland Ice Sheet contributions to global sea level rise is complicated by the lack of understanding of ice sheet hydrology. The proportion of meltwater contributing to sea level rise, as well as the pathways transporting meltwater on, through, and out of the ice sheet, are not well understood. Remote sensing of hydrologic dynamics in combination with small-scale fieldwork allows examination of broad spatial and temporal trends in the Greenland hydrologic system responding to a changing climate. This dissertation reviews the current state of knowledge on Greenland Ice Sheet hydrology, and examines three components of the Greenland hydrologic system: (1) fjord sediment plumes as an indicator of meltwater output, (2) supraglacial streamflow as an indicator of meltwater input to the ice sheet, and (3) moulin distribution and formation as a mechanism diverting meltwater from the surface of the ice sheet to the bed. Buoyant sediment plumes that develop in fjords downstream of outlet glaciers are controlled by numerous factors, including meltwater runoff. MODIS retrievals of sediment plume concentration show a strong regional and seasonal response to meltwater production on the ice sheet surface, despite limitations in fjords with rapidly calving glaciers, providing a tool for tracking meltwater release to the ocean. Summertime field observations and high-resolution satellite imagery reveal extensive supraglacial river networks across the southwestern ablation zone transporting large volumes of meltwater to moulins, yet these features remain poorly mapped and their discharges unquantified. A GIS modeling framework is developed to spatially adapt Manning's equation for use with high-resolution WorldView-2 imagery to map supraglacial river discharge. Moulins represent connections between surface meltwater on the Greenland ice sheet and subglacial drainage networks, where increased meltwater can enhance ice sliding dynamics. A new high-resolution moulin dataset in western Greenland created from WorldView-1/2 imagery in the 2012 record melt year is used to assess moulin distribution and formation. Moulin locations show a significantly different distribution compared to geospatial variables in the entire study area, with moulins forming in areas of thinner ice, higher velocity and extensional strain rate, as well as lower surface elevation and slope, and higher bed elevation and slope.

Vogel, Manfred, 1946-

Author :
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (735 download)

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Book Synopsis Vogel, Manfred, 1946- by :

Download or read book Vogel, Manfred, 1946- written by and published by . This book was released on 1961 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: The folder may include clippings, announcements, small exhibition catalogs, and other ephemeral items.

Snow and Glacier Hydrology

Author : P. Singh
Publisher : Springer Science & Business Media
ISBN 13 : 9780792367673
Total Pages : 764 pages
Book Rating : 4.3/5 (676 download)

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Book Synopsis Snow and Glacier Hydrology by : P. Singh

Download or read book Snow and Glacier Hydrology written by P. Singh and published by Springer Science & Business Media. This book was released on 2001-02-28 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an updated discussion of snow and glacier hydrology, drawing on the results of recent investigations. It serves as a source of reference at the senior undergraduate or beginning graduate level and stimulates further interest in this important part of the hydrologic cycle.

Bare Ice Hydrologic Processes on the Greenland Ice Sheet Ablation Zone

Author : Matthew Cooper
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (119 download)

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Book Synopsis Bare Ice Hydrologic Processes on the Greenland Ice Sheet Ablation Zone by : Matthew Cooper

Download or read book Bare Ice Hydrologic Processes on the Greenland Ice Sheet Ablation Zone written by Matthew Cooper and published by . This book was released on 2020 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Greenland Ice Sheet is a major contributor to global sea level rise, with recent mass loss dominated by meltwater runoff from the ablation zone, i.e. areas of the ice sheet where annual mass losses exceed gains. In this zone, the winter snowpack melts entirely each summer exposing bare glacier ice. Observations of Greenland's ablation zone suggest the exposed bare ice surface is comprised of low-density ice termed "weathering crust" that may store meltwater, potentially reducing meltwater runoff export to surrounding oceans. Climate models are the primary tools used to forecast future Greenland mass loss, but these models treat the ablation zone as impermeable high-density ice with no meltwater retention capacity. Recent evidence suggests that climate models overpredict meltwater runoff from the ablation zone, which may be linked to weathering crust presence, but diagnosing climate model predictions is difficult because observations of meltwater runoff on the ice sheet surface are extremely rare and weathering crust presence is undocumented. This dissertation presents the results of four investigations that address this problem by pairing field observations of hydrologic and radiative properties of bare ice collected in Greenland's ablation zone with numerical modeling and analysis of climate model output. The results of these investigations reveal the presence of low-density weathering crust on Greenland's bare ice ablation zone surface and the potential for non-trivial meltwater runoff retention within weathering crust on Greenland's bare ice ablation zone surface. New estimates of spectral radiation attenuation coefficients are quantified and directly applied to a numerical model of spectral and thermodynamic heat transfer in bare ice. This model successfully simulates meltwater runoff from a supraglacial catchment on Greenland's southwest ablation zone surface. Model results suggest that nocturnal refreezing of meltwater stored within weathering crust occurs in Greenland's ablation zone, potentially reducing runoff up to 32% on annual timescales. These findings imply a reinterpretation of refreezing on bare ice as an important control on Greenland's ablation zone surface mass balance and the need to represent this process in climate model predictions of future Greenland mass loss.

Encyclopedia of Snow, Ice and Glaciers

Author : Vijay P. Singh
Publisher : Springer Science & Business Media
ISBN 13 : 9048126428
Total Pages : 1301 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Encyclopedia of Snow, Ice and Glaciers by : Vijay P. Singh

Download or read book Encyclopedia of Snow, Ice and Glaciers written by Vijay P. Singh and published by Springer Science & Business Media. This book was released on 2011-06-29 with total page 1301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The earth’s cryosphere, which includes snow, glaciers, ice caps, ice sheets, ice shelves, sea ice, river and lake ice, and permafrost, contains about 75% of the earth’s fresh water. It exists at almost all latitudes, from the tropics to the poles, and plays a vital role in controlling the global climate system. It also provides direct visible evidence of the effect of climate change, and, therefore, requires proper understanding of its complex dynamics. This encyclopedia mainly focuses on the various aspects of snow, ice and glaciers, but also covers other cryospheric branches, and provides up-to-date information and basic concepts on relevant topics. It includes alphabetically arranged and professionally written, comprehensive and authoritative academic articles by well-known international experts in individual fields. The encyclopedia contains a broad spectrum of topics, ranging from the atmospheric processes responsible for snow formation; transformation of snow to ice and changes in their properties; classification of ice and glaciers and their worldwide distribution; glaciation and ice ages; glacier dynamics; glacier surface and subsurface characteristics; geomorphic processes and landscape formation; hydrology and sedimentary systems; permafrost degradation; hazards caused by cryospheric changes; and trends of glacier retreat on the global scale along with the impact of climate change. This book can serve as a source of reference at the undergraduate and graduate level and help to better understand snow, ice and glaciers. It will also be an indispensable tool containing specialized literature for geologists, geographers, climatologists, hydrologists, and water resources engineers; as well as for those who are engaged in the practice of agricultural and civil engineering, earth sciences, environmental sciences and engineering, ecosystem management, and other relevant subjects.

Subsurface Hydrology

Author : David W. Hyndman
Publisher : John Wiley & Sons
ISBN 13 : 1118671805
Total Pages : 445 pages
Book Rating : 4.1/5 (186 download)

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Book Synopsis Subsurface Hydrology by : David W. Hyndman

Download or read book Subsurface Hydrology written by David W. Hyndman and published by John Wiley & Sons. This book was released on 2013-04-30 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 171. Groundwater is a critical resource and the PrinciPal source of drinking water for over 1.5 billion people. In 2001, the National Research Council cited as a "grand challenge" our need to understand the processes that control water movement in the subsurface. This volume faces that challenge in terms of data integration between complex, multi-scale hydrologie processes, and their links to other physical, chemical, and biological processes at multiple scales. Subsurface Hydrology: Data Integration for Properties and Processes presents the current state of the science in four aspects: Approaches to hydrologie data integration Data integration for characterization of hydrologie properties Data integration for understanding hydrologie processes Meta-analysis of current interpretations Scientists and researchers in the field, the laboratory, and the classroom will find this work an important resource in advancing our understanding of subsurface water movement.

Glacier Hydrology and Hydrochemistry

Author : M. Sharp
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Glacier Hydrology and Hydrochemistry by : M. Sharp

Download or read book Glacier Hydrology and Hydrochemistry written by M. Sharp and published by John Wiley & Sons. This book was released on 1998-10-20 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has been a period of rapid advances in glacier hydrology and hydrochemistry. These have resulted from the application of new technologies to the direct observation of englacial and subglacial drainage systems via boreholes, from theoretical advances and from increased interactions between fieldworkers and modellers. This collection of papers captures the spirit of these advances highlighting new methodologies, the change in character of hydrological models from lumped conceptual models to physically based, distributed models, and the changing role of field studies in glacier hydrological investigations. Major themes identified in the book are: approaches to defining the structure of drainage systems in cold and temperate glaciers; investigations of the linkages between surface and subsurface components of these systems, and of hydraulic interactions between different elements of subglacial systems; seasonal changes in drainage system properties at local and glacier wide scales; controls on meltwater quality; the integration of field and modelling studies; and problems of scaling up results from studies of valley glaciers to the ice sheet scale.

Notes Techniques en Hydrologie

Author :
Publisher :
ISBN 13 :
Total Pages : 432 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Notes Techniques en Hydrologie by :

Download or read book Notes Techniques en Hydrologie written by and published by . This book was released on 1970 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Polar Environments and Global Change

Author : Roger G. Barry
Publisher : Cambridge University Press
ISBN 13 : 1108423167
Total Pages : 445 pages
Book Rating : 4.1/5 (84 download)

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Book Synopsis Polar Environments and Global Change by : Roger G. Barry

Download or read book Polar Environments and Global Change written by Roger G. Barry and published by Cambridge University Press. This book was released on 2018-08-09 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveys atmospheric, oceanic and cryospheric processes, present and past conditions, and changes in polar environments.

Snow and Ice Science in Hydrology

Author : Masayoshi Nakawo
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.4/5 (89 download)

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Book Synopsis Snow and Ice Science in Hydrology by : Masayoshi Nakawo

Download or read book Snow and Ice Science in Hydrology written by Masayoshi Nakawo and published by . This book was released on 1998 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Land Surface Remote Sensing in Continental Hydrology

Author : Nicolas Baghdadi
Publisher : Elsevier
ISBN 13 : 0081011814
Total Pages : 504 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Land Surface Remote Sensing in Continental Hydrology by : Nicolas Baghdadi

Download or read book Land Surface Remote Sensing in Continental Hydrology written by Nicolas Baghdadi and published by Elsevier. This book was released on 2016-09-19 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continental hydrological cycle is one of the least understood components of the climate system. The understanding of the different processes involved is important in the fields of hydrology and meteorology.In this volume the main applications for continental hydrology are presented, including the characterization of the states of continental surfaces (water state, snow cover, etc.) using active and passive remote sensing, monitoring the Antarctic ice sheet and land water surface heights using radar altimetry, the characterization of redistributions of water masses using the GRACE mission, the potential of GNSS-R technology in hydrology, and remote sensing data assimilation in hydrological models.This book, part of a set of six volumes, has been produced by scientists who are internationally renowned in their fields. It is addressed to students (engineers, Masters, PhD) , engineers and scientists, specialists in remote sensing applied to hydrology. Through this pedagogical work, the authors contribute to breaking down the barriers that hinder the use of Earth observation data. Provides clear and concise descriptions of modern remote sensing methods Explores the most current remote sensing techniques with physical aspects of the measurement (theory) and their applications Provides chapters on physical principles, measurement, and data processing for each technique described Describes optical remote sensing technology, including a description of acquisition systems and measurement corrections to be made

Arctic Research of the United States

Author :
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Arctic Research of the United States by :

Download or read book Arctic Research of the United States written by and published by . This book was released on 2007 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.