Results 51 to 60 of about 934 (207)

Analysis of ‘hummocky moraine’ using Structure-from-Motion photogrammetry [PDF]

, 2015
This study presents results of a high-resolution topographic survey of the proglacial area of Austre Lovénbreen, Svalbard. Structure-from-Motion (SfM) was used to generate a digital elevation model (DEM) of the proglacial zone from aerial imagery. This
Tonkin, Toby N., Wickikowski, Anya, Midgley, Nicholas G., Cook, SJ, Cook, Simon; id_orcid, Tonkin, TN, Midgley, NG, Wicikowski, A   +7 more
core  

Antarctic subglacial drilling rig: Part II. Ice and Bedrock Electromechanical Drill (IBED)

Annals of Glaciology, 2021
A new, modified version of the cable-suspended Ice and Bedrock Electromechanical Drill (IBED) was designed for drilling in firn, ice, debris-rich ice and rock.
Pavel Talalay, Xingchen Li, Nan Zhang, Xiaopeng Fan, Youhong Sun, Pinlu Cao, Rusheng Wang, Yang Yang, Yongwen Liu, Yunchen Liu, Wei Wu, Cheng Yang, Jialin Hong, Da Gong, Han Zhang, Xiao Li, Yunwang Chen, An Liu, Yazhou Li   +18 more
doaj   +1 more source

Synchronous terminus change of East Antarctic outlet glaciers linked to climatic forcing [PDF]

, 2013
In recent years there has been a growing trend of acceleration, thinning and retreat of ocean-terminating outlet glaciers in both the Greenland and West Antarctic Ice Sheets, resulting in an increasing contribution to sea level rise.
MILES, BERTIE
core  

Characterization of seismicity from different glacial bed types: machine learning classification of laboratory stick-slip acoustic emissions

Annals of Glaciology
Subglacial seismicity presents the opportunity to monitor inaccessible glacial beds at the epicentral location and time. Glaciers can be underlain by rock or till, a first order control on bed mechanics.
Seth Saltiel, Nathan Groebner, Theresa Sawi, Christine McCarthy   +3 more
doaj   +1 more source

Antarctic ice-sheet structures retrieved from P-wave coda autocorrelation method and comparisons with two other single-station passive seismic methods

Journal of Glaciology, 2020
Passive seismology is becoming increasingly popular for glacier/ice-sheet structure investigations in Polar regions. Single-station passive seismic methods including P-wave receiver functions (PRFs), horizontal-to-vertical spectral ratio (HVSR) and a ...
Peng Yan, Zhiwei Li, Fei Li, Yuande Yang, Weifeng Hao   +4 more
doaj   +1 more source

New insights into ice accumulation at Galena Creek Rock Glacier from radar imaging of its internal structure

Journal of Glaciology, 2020
The ice-cored Galena Creek Rock Glacier, Wyoming, USA, has been the subject of a number of studies that sought to determine the origin of its ice. We present new observations of the rock glacier's internal structure from ground-penetrating radar to ...
Eric Ivan Petersen, Joseph S. Levy, John W. Holt, Cassie M. Stuurman   +3 more
doaj   +1 more source

Comprehensive characterisation of a temperate Alpine glaciers internal ice structure with geophysical methods

, 2022
ISSN:0374 ...
  +7 more sources

Brine, englacial structure and basal properties near the terminus of McMurdo Ice Shelf, Antarctica

Annals of Glaciology, 2017
We collected ~1300 km of ground-penetrating radar profiles over McMurdo Ice Shelf, Antarctica, using frequencies between 40 and 400 MHz to determine extent, continuity and depth to the brine.
S. Campbell, Z. Courville, S. Sinclair, J. Wilner   +3 more
doaj   +1 more source

A Geophysical Investigation of a Rock Glacier in the Canadian Rockies

, 2016
In this project a geophysical survey was conducted on the rock glacier in the Helen Lake watershed (Ban National Park, Alberta, Canada) to investigate its internal structure. Geophysical methods involved electrical resistivity tomography, seismic refraction and ground penetrating radar.
openaire   +2 more sources

Ice Thickness Estimation from Geophysical Investigations on the Terminal Lobes of Belvedere Glacier (NW Italian Alps) [PDF]

Remote Sensing, 2019
Alpine glaciers are key components of local and regional hydrogeological cycles and real-time indicators of climate change. Volume variations are primary targets of investigation for the understanding of ongoing modifications and the forecast of possible future scenarios.
Colombero C., Comina C., De Toma E., Franco D., Godio A.   +4 more
openaire   +2 more sources