Results 21 to 30 of about 934 (207)

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

Subglacial sediment distribution from constrained seismic inversion, using MuLTI software: examples from Midtdalsbreen, Norway

open access: yesAnnals of Glaciology, 2019
Fast ice flow is associated with the deformation of subglacial sediment. Seismic shear velocities, Vs, increase with the rigidity of material and hence can be used to distinguish soft sediment from hard bedrock substrates.
Siobhan F. Killingbeck   +5 more
doaj   +1 more source

Advances in geophysical exploration of ice sheets and glaciers [PDF]

open access: yesJournal of Glaciology, 1975
Abstract The techniques of geophysical exploration can be used in a number of ways to investigate the internal characteristics of ice bodies. The application of radio-echo sounding is discussed elsewhere by Robin (1975[a]) so is not considered here except for a few special cases.
openaire   +1 more source

Acquisition of a 3 min, two-dimensional glacier velocity field with terrestrial radar interferometry

open access: yesJournal of Glaciology, 2017
Outlet glaciers undergo rapid spatial and temporal changes in flow velocity during calving events. Observing such changes requires both high temporal and high spatial resolution methods, something now possible with terrestrial radar interferometry. While
DENIS VOYTENKO   +7 more
doaj   +1 more source

Internal structure and water routing of an ice-debris landform assemblage using multiple geophysical methods in the semiarid Andes

open access: yesFrontiers in Earth Science, 2023
Rock glaciers are the most abundant (peri) glacial landform in the semiarid Andes (SA, 29–34°S), covering about three times the area of mountain glaciers.
Gonzalo Navarro   +6 more
doaj   +1 more source

Patterns in glacial-earthquake activity around Greenland, 2011–13

open access: yesJournal of Glaciology, 2017
Glacial earthquakes are caused by large iceberg calving events, which are an important mechanism for mass loss from the Greenland ice sheet. The number of glacial earthquakes in Greenland has increased sixfold over the past two decades.
KIRA G. OLSEN, MEREDITH NETTLES
doaj   +1 more source

Efficiency of artificial neural networks for glacier ice-thickness estimation: a case study in western Himalaya, India

open access: yesJournal of Glaciology, 2021
Knowledge of glacier volume is crucial for ice flow modelling and predicting the impacts of climate change on glaciers. Rugged terrain, harsh weather conditions and logistic costs limit field-based ice thickness observations in the Himalaya.
Mohd Anul Haq   +2 more
doaj   +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

Chemical and isotopic switching within the subglacial environment of a high Arctic glacier. [PDF]

open access: yes, 2006
Natural environmental isotopes of nitrate, sulphate and inorganic carbon are discussed in conjunction with major ion chemistry of subglacial runoff from a High Arctic glacier, Midre Lovénbreen, Svalbard. The chemical composition of meltwaters is observed
Hodson, Andrew   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy