Glacial morphology in the Chinese Pamir: Connections among climate, erosion, topography, lithology and exhumation

Abstract. Ice thickness data over much of East Antarctica are sparse and irregularly distributed. This poses difficulties for reconstructing the homogeneous coverage needed to properly assess underlying sub-glacial morphology and fundamental geometric constraints on sea level rise. Here we introduce a new physically-based ice thickness interpolation scheme and apply this to existing ice thickness data in the Aurora Subglacial Basin region. The skill and robustness of the new reconstruction is demonstrated by comparison with new data from the ICECAP project. The interpolated morphology shows an extensive marine-based ice sheet, with considerably more area below sea-level than shown by prior studies. It also shows deep features connecting the coastal grounding zone with the deepest regions in the interior. This has implications for ice sheet response to a warming ocean and underscores the importance of obtaining additional high resolution data in these marginal zones for modelling ice sheet evolution.

Download Full-text

Glacial morphology of the blue stack area, Donegal

Irish Geography ◽

10.1080/00750775809555516 ◽

1958 ◽

Vol 3 (5) ◽

pp. 242-253 ◽

Cited By ~ 4

Author(s):

G. H. Dury

Keyword(s):

Glacial Morphology

Download Full-text

Die Höhenlage der Schichtengrenze Tertiär—Quartär im mittleren Oberschwaben.

E&G Quaternary Science Journal ◽

10.3285/eg.18.1.05 ◽

1967 ◽

Vol 18 (1) ◽

pp. 104-109

Author(s):

Rüdiger German ◽

Jakob Lohr ◽

Dieter Wittmann ◽

Paul Brosse

Keyword(s):

Lower Boundary ◽

Quaternary Sediments ◽

Glacial Morphology ◽

First Time

Abstract. For the first time we submit a map showing the altitude of the tertiary-quaternary-boundary in a larger area of the Württemberg prealpine highland. The region that has been investigated covers an area of 310 km². It is covered with about 20 km³ of quaternary sediments. About 5 km³ can be allotted to the Wurzach basin and almost 6 km³ to the relatively small part of the recently explored area in the Schüssen basin. This map of the lower boundary quaternary sediments (table) admits of interesting conclusions and it is of particular importance to the glacial morphology.

Download Full-text

Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme

The Cryosphere Discussions ◽

10.5194/tcd-5-655-2011 ◽

2011 ◽

Vol 5 (1) ◽

pp. 655-684 ◽

Cited By ~ 1

Author(s):

J. L. Roberts ◽

R. C. Warner ◽

D. Young ◽

A. Wright ◽

T. D. van Ommen ◽

...

Keyword(s):

Sea Level ◽

Ice Sheet ◽

East Antarctica ◽

Geometric Constraints ◽

Ice Thickness ◽

Interpolation Scheme ◽

Ice Dynamics ◽

High Resolution Data ◽

Physically Based ◽

Glacial Morphology

Abstract. Ice thickness data over much of East Antarctica are sparse and irregularly distributed. This poses difficulties for reconstructing the homogeneous coverage needed to properly assess underlying sub-glacial morphology and fundamental geometric constraints on sea level rise. Here we introduce a new physically-based ice thickness interpolation scheme and apply this to existing ice thickness data in the Aurora Subglacial Basin region. The skill and robustness of the new reconstruction is demonstrated by comparison with new data from the ICECAP project. The interpolated morphology shows an extensive marine-based ice sheet, with considerably more area below sea-level than shown by prior studies. It also shows deep features connecting the coastal grounding zone with the deepest regions in the interior. This has implications for ice sheet response to a warming ocean and underscores the importance of obtaining additional high resolution data in these marginal zones for modelling ice sheet evolution.

Download Full-text

Glacial morphology of the Sara Mountains

Glasnik srpskog geografskog drustva ◽

10.2298/gsgd2101001m ◽

2021 ◽

Vol 101 (1) ◽

pp. 1-29

Author(s):

Ljubomir Menkovic ◽

Milovan Milivojevic

Keyword(s):

Spatial Development ◽

Glacial Maximum ◽

Snow Line ◽

Almost All ◽

Glacial Morphology

The paper defines and presents the forms of glacial relief formed, most likely, during the last Pleistocene glacial maximum (LGM). A graphic and textual presentation of almost all glacial forms is given on the entire territory of the Sara Mountains, on both sides of their main ridge, from Ljuboten in the NE to the source tributaries of the Radika River in the SW. Based on the height position and spatial development of glacial forms, the height of the snow line (ELA) was determined, glacier types were determined and defined, which is shown on two overview maps representing Pleistocene glacial morphology and reconstructed Pleistocene glaciers referring to the last Pleistocene glacial (MIS-2). Since these are the youngest glacial morphological traces on the Sara Mountains, they are the best preserved today.

Download Full-text