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Gravity Studies Over West Antarctica
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Book Synopsis Gravity Studies Over West Antarctica by : Svetlana Gennadiyevna Burris
Download or read book Gravity Studies Over West Antarctica written by Svetlana Gennadiyevna Burris and published by . This book was released on 2012 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the results of new analysis of gravity studies over West Antarctica. Set on the Siple Coast, an airborne geophysical survey was flown between 1994 and 1997 that covered the trunk of Bindschadler Ice Stream and the up-stream areas, including Whitmore Accommodation Zone and Byrd Subglacial Basin. The new gravity reduction methodology removed vertical and horizontal accelerations, the Eötvös effect, and the theoretical gravity; unlike previous analyses, this reduction did not level individual lines, preserving the high frequency data and avoiding introduction of new errors. This reduction provided the free-air gravity disturbance over the area, which was then leveled and registered by the more regional extensive GOCE satellite gravity. The processing and reduction of the data improved the high frequency signal over previous work on the data, giving better definition of small scale, short wavelength features, which works well with satellite gravity data that emphasizes the large scale, long wavelength features. The leveled free-air gravity was then processed with a FORTRAN 90 program that calculates the Bouguer disturbance based on the free-air gravity and the topography. The topography was gathered concurrently with the gravity with ice penetrating radar during the airborne survey. The Bouguer disturbances provide a crustal model of the area. The final Bouguer disturbance was also corrected for the ice above sea level, which was calculated with a simple Bouguer slab correction. Finally, a power spectrum analysis was run on a profile in the Bouguer gravity disturbance in order to complete a spectral analysis. The spectral analysis provides crustal density boundaries for a density anomaly near the surface, a mid-crustal anomaly, and the Moho boundary. The improved the high frequency content of the data allows spectral analysis down to 4 km. The differing crustal thickness from spectral analysis also shows the character and extent of the West Antarctic Rift System, the northern flank of which extends out from Marie Byrd Land and into the survey area. Bindschadler Ice Stream is located on the WARS rift floor and MacAyeal Ice Stream sits on the rift flank. .
Book Synopsis Gravity Observations in West Antarctica by : Gilbert Dewart
Download or read book Gravity Observations in West Antarctica written by Gilbert Dewart and published by . This book was released on 1975 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Gravity Study of West Antarctica by : Bruce Alan Kososki
Download or read book A Gravity Study of West Antarctica written by Bruce Alan Kososki and published by . This book was released on 1972 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Analysis of Gravity Measurements on the Ross Ice Shelf, Antarctica by : Lawrence Lee Greischar
Download or read book An Analysis of Gravity Measurements on the Ross Ice Shelf, Antarctica written by Lawrence Lee Greischar and published by . This book was released on 1982 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravity Analyses for the Crustal Structure and Subglacial Geology of West Antarctica, Particularly Beneath Thwaites Glacier by : Theresa Marie Diehl
Download or read book Gravity Analyses for the Crustal Structure and Subglacial Geology of West Antarctica, Particularly Beneath Thwaites Glacier written by Theresa Marie Diehl and published by . This book was released on 2008 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Isostatic Gravity Anomalies in West Antarctica by : James D. Robertson
Download or read book Isostatic Gravity Anomalies in West Antarctica written by James D. Robertson and published by . This book was released on 1982 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Antarctic Earth Science by : R. L. Oliver
Download or read book Antarctic Earth Science written by R. L. Oliver and published by Cambridge University Press. This book was released on 1983 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth international symposium on Antarctic Earth Sciences took place in Adelaide, South Australia during the week 16-20 August 1982. This volume contains a record of the centenary activities celebrating Sir Douglas Mawson and the one hundred and seventy-four papers that were presented by delegates for discussion over the five days. Sir Douglas Mawson was part of the first team to reach the magnetic South Pole, a leading geologist and scientific figure during the heroic age of of antarctic exploration. The papers presented during the symposium were divided into fifteen categories covering east and west Antarctica, marine, land and glacial geology, plate tectonics, islands, peninsulas, climatic change and Precambrian and Cenozoic era activity. The two hundred persons from sixteen countries who attended the symposium brought together a wide range of the most current expertise and research to share, of which this volume provides a record.
Book Synopsis The Crustal Structure Beneath Ice Stream C and Ridge BC, West Antarctica from Seismic Refraction and Gravity Measurements by : Clifford G. Munson
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 Antarctica written by Dieter K. Fütterer and published by Springer Science & Business Media. This book was released on 2006-05-11 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sixty articles arranged in eight thematic sections refer to most recent geological and geophysical results of Antarctic research. The Precambrian of the East Antarctic shield and its geological history is considered as well as sub-ice topography, geophysics and stratigraphy, sedimentology and geophysics of the surrounding Southern Ocean. Particular emphasis is given to the connection of the Antarctic and the surrounding continents when forming part of Gondwana.
Book Synopsis First airborne gravity results over the Thwaites Glacier catchment, West Antarctica by : T.M. DIEHL
Download or read book First airborne gravity results over the Thwaites Glacier catchment, West Antarctica written by T.M. DIEHL and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravity observations in the Wright Valley area, Victoria Land, Antarctica by : C. Bull
Download or read book Gravity observations in the Wright Valley area, Victoria Land, Antarctica written by C. Bull and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravity Field of the Ross Sea Region from Satellite Altimetry by : D. C. Mcadoo
Download or read book Gravity Field of the Ross Sea Region from Satellite Altimetry written by D. C. Mcadoo and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravity Observations in the Koettlitz Glacier Area, Southern Victoria Land, Antarctica by : Colin Bull
Download or read book Gravity Observations in the Koettlitz Glacier Area, Southern Victoria Land, Antarctica written by Colin Bull and published by . This book was released on 1962 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the ice-free area north-west of the Koettlitz Glacier, values of the Bouguer anomaly decrease from +5 mgals in the north-east to - 80 mgals near the Royal Society Range. The pattern of gravity anomalies is controlled by an old north-south fault system delineating the Antarctic Horst, a younger volcanically active shear zone south of the area, and varying thicknesses of dense volcanic material in the area. Cross sections of three underfit glaciers have been calculated from measurements of gravity on their surface.
Book Synopsis Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-up by : J.L. Smellie
Download or read book Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-up written by J.L. Smellie and published by Geological Society of London. This book was released on 2021-06-09 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memoir is the first to review all of Antarctica’s volcanism between 200 million years ago and the Present. The region is still volcanically active. The volume is an amalgamation of in-depth syntheses, which are presented within distinctly different tectonic settings. Each is described in terms of (1) the volcanology and eruptive palaeoenvironments; (2) petrology and origin of magma; and (3) active volcanism, including tephrochronology. Important volcanic episodes include: astonishingly voluminous mafic and felsic volcanic deposits associated with the Jurassic break-up of Gondwana; the construction and progressive demise of a major Jurassic to Present continental arc, including back-arc alkaline basalts and volcanism in a young ensialic marginal basin; Miocene to Pleistocene mafic volcanism associated with post-subduction slab-window formation; numerous Neogene alkaline volcanoes, including the massive Erebus volcano and its persistent phonolitic lava lake, that are widely distributed within and adjacent to one of the world’s major zones of lithospheric extension (the West Antarctic Rift System); and very young ultrapotassic volcanism erupted subglacially and forming a world-wide type example (Gaussberg).
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:
Book Synopsis Science and Stewardship in the Antarctic by : National Research Council
Download or read book Science and Stewardship in the Antarctic written by National Research Council and published by National Academies Press. This book was released on 1993-02-01 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the negotiation of the International Protocol on Environmental Protection in 1991, those nations conducting scientific research programs in Antarctica face new challenges for stewardship of the southern continent and protection of its environment. Science and Stewardship in the Antarctic examines how the implementation of the 1991 agreement in the United States can be done in such a way to ensure the compatibility of scientific and environmental protection goals in this global laboratory. The book also addresses the potential for the new requirements both to benefit and harm research activities in Antarctica.
Download or read book 1644-1657 written by Massachusetts and published by . This book was released on 1854 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
