Results 31 to 40 of about 14,168 (295)

Geophysical investigations of the Pensacola Mountains and adjacent glacierized areas of Antarctica [PDF]

open access: yesProfessional Paper, 1974
----------------------------------Introduction --------------------------------Glacial and bedrock physiography ------------------Summary of geology ---------------------------1 Geophysical results Continued 1 Gravity Continued 2 Neptune and Patuxent Ranges---------------3 Dufuk~tru~on ------------------------10 12 14 15 15 ...
John Charles Behrendt   +3 more
openaire   +1 more source

A comparison of automated approaches to extracting englacial-layer geometry from radar data across ice sheets

open access: yesAnnals of Glaciology, 2020
Radar surveys across ice sheets typically measure numerous englacial layers that can often be regarded as isochrones. Such layers are valuable for extrapolating age–depth relationships away from ice-core locations, reconstructing palaeoaccumulation ...
Richard Delf   +4 more
doaj   +1 more source

Radio-Echo Sounding Over Polar Ice Masses [PDF]

open access: yes, 2007
Peer reviewedPublisher ...
Bingham, Robert G., Siegert, Martin J.
core   +1 more source

Dynamics of a small surge-type glacier using one-dimensional geophysical inversion [PDF]

open access: yesJournal of Glaciology, 2009
AbstractWe investigate the dynamics of a small surge-type valley glacier as part of a study to characterize glacier response to climate in the Donjek Range, southwest Yukon, Canada. Pole displacements were measured using kinematic GPS techniques during three consecutive summer field seasons.
Laetitia De Paoli, Gwenn E. Flowers
openaire   +1 more source

Air-temperature control on diurnal variations in microseismicity at Laohugou Glacier No. 12, Qilian Mountains

open access: yesAnnals of Glaciology, 2019
We conducted a 9-d seismic experiment in October 2015 at Laohugou Glacier No. 12. We identified microseismic signals using the short-term/long-term average trigger algorithm at four stations and classified them as long and short-duration events based on ...
Tao Zhang   +5 more
doaj   +1 more source

Ground penetrating radar in temperate ice: englacial water inclusions as limiting factor for data interpretation

open access: yesJournal of Glaciology, 2023
Ground penetrating radar (GPR) has been extensively used in glaciology to infer glacier's ice thickness, liquid water content, water drainage pathways, and other properties.
Christophe Ogier   +6 more
doaj   +1 more source

Rapid submarine ice melting in the grounding zones of ice shelves in West Antarctica. [PDF]

open access: yes, 2016
Enhanced submarine ice-shelf melting strongly controls ice loss in the Amundsen Sea embayment (ASE) of West Antarctica, but its magnitude is not well known in the critical grounding zones of the ASE's major glaciers.
Khazendar, Ala   +8 more
core   +1 more source

Increasing contribution of grain boundary compliance to polycrystalline ice elasticity as temperature increases

open access: yesJournal of Glaciology, 2018
Measured elastic stiffnesses of ice polycrystals decrease with increasing temperature due to a decrease in grain boundary stiffness with increasing temperature.
COLIN M. SAYERS
doaj   +1 more source

Stratigraphy and chronology of a 15ka sequence of multi-sourced silicic tephras in a montane peat bog, eastern North Island, New Zealand. [PDF]

open access: yes, 1999
We document the stratigraphy, composition, and chronology of a succession of 16 distal, silicic tephra layers interbedded with lateglacial and Holocene peats and muds up to c. 15 000 radiocarbon years (c.
Lowe, David J.   +2 more
core   +2 more sources

Imaging englacial and subglacial drainage networks with UAV-based 3D GPR

open access: yesJournal of Glaciology
Meltwater drainage through glaciers strongly influences ice dynamics and related hazards, yet detailed observations of active englacial and subglacial networks remain scarce due to challenges in direct observation.
Johanna Klahold   +3 more
doaj   +1 more source

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