Download or read book Seismological Investigations of a West Antarctic Ice Stream written by Donald D. Blankenship and published by . This book was released on 1989 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismological investigation of a West Antarctic ice stream written by Donald Dean Blankenship and published by . This book was released on 1991 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Studies Over Ice Stream C West Antarctica written by Shashank Atre and published by . This book was released on 1990 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Investigations on Rutford Ice Stream West Antarctica written by Andrew Mark Smith and published by . This book was released on 1997 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radar Studies on Ice Stream C West Antarctica written by Benjamin E. Smith and published by . This book was released on 1999 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The West Antarctic Ice Sheet written by and published by American Geophysical Union. This book was released on 1998 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Investigation of Sediments Beneath Antarctic Ice Streams written by Tarun Luthra and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An accurate knowledge of the subglacial system is key in elucidating the mechanisms of ice stream motion and overall mass balance of the Antarctic Ice Sheet. Ice streams, owing to their geometry and low surface slopes, generate really low driving stress, thus typically require an extensive deformable subglacial sediment layer to allow fast flow conditions. This thin layer of sediment is highly sensitive to subglacial water pressure, which, if reduced, can dramatically alter the flow dynamics of ice streams. The flow regime of Whillans Ice Stream and Kamb Ice Stream highlight these basal conditions. Kamb Ice Stream stagnated about 150 years ago while current observations of the Whillans Ice Stream show that the ice stream is decelerating in the past few decades. Both attribute their current flow conditions to the presence of areas of high basal drag or the so-called sticky spots, which inhibit fast ice stream flow. This subglacial interface is highly influenced by the sediment porosity, fluid pressure, and water content which ultimately defines its overall strength in restricting the ice-stream flow. In this thesis, I employ the seismic amplitude analysis technique to study the subglacial interface of these two ice streams. The seismic amplitude analysis provides an insight into the subglacial regimes of ice stream flow in Antarctica. The knowledge about this subglacial interface and ground truthing of bed conditions is essential for the ice sheet models and discerning ice dynamics to understand the future evolution of these ice streams.

Download or read book Polar Seismology written by Masaki Kanao and published by BoD – Books on Demand. This book was released on 2018-10-10 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismology in polar regions (Arctic and Antarctic) allows us to study the static condition and high-latitude dynamics of the Earth. This book covers the recent developments in seismology in polar regions; observations and networks; international collaboration; heterogeneous structure and dynamics of the lithosphere; deep Earth's interiors observed from high latitudes; characteristics of seismicity and seismic wave propagation; and global tectonics in terms of Earth's history, including the interdisciplinary studies on the interaction between Earth's spheres. Since the International Polar Year (IPY) in 2007/2008 was the most exciting campaign launched within contemporary polar studies, this book observes recent seismological achievements by the IPY, specifically focusing on the seismic signals near the surface associated with cryosphere dynamics and evolution. Topics on cryoseismology, such as glacial earthquake activities, are viewed in terms of global warming. Moreover, observational experiments and long-term monitoring under the extreme conditions in the polar environment are also discussed.

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.

Download or read book Antarctic Journal of the United States written by and published by . This book was released on 1997 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Crustal Structure Beneath Ice Stream C and Ridge BC West Antarctica from Seismic Refraction and Gravity Measurements written by Clifford G. Munson and published by . This book was released on 1991 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Array Studies of Antarctica and Madagascar written by Martin James Pratt and published by . This book was released on 2016 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radar Sounding on Ice Stream B West Antarctica written by Zhen Liu and published by . This book was released on 1999 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations written by S. ANANDAKRISHNAN and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology and Seismic Stratigraphy of the Antarctic Margin written by Alan K. Cooper and published by American Geophysical Union. This book was released on 1997-01-23 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Antarctic Research Series, Volume 71. The Antarctic Ice Sheet has greatly affected global climate, sea level, ocean circulation, and southern hemisphere biota during Cenozoic times. Much of our understanding of the evolution of the ice sheet has been inferred from isotopic studies on distant deep-ocean sediments, because few Cenozoic rocks are exposed on the Antarctic continent. Yet, large differences occur between past ice volumes inferred from isotopic studies and those inferred from low-latitude sea-level variation. The massive quantities of glacially transported terrigenous sediments that lie beneath the Antarctic continental margin provide an additional, more direct record of the inferred ice sheet fluctuations. Volume 68 addresses the history of ice sheet fluctuations as recorded by geological and geophysical investigations of selected areas of the Antarctic continental margin. As described below, the volume gives data and results from on-going research by a major multinational project directed toward better understanding the impact of Antarctic Ice Sheet fluctuations on global sea levels and climates.

Download or read book Transient Behavior of the West Antarctic Ice Streams written by Marion Bougamont and published by . This book was released on 2003 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microearthquakes as Indicators of Ice Stream Basal Conditions written by Sridhar Anandakrishnan and published by . This book was released on 1990 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: