Results 31 to 40 of about 946 (136)

Radio-echo sounding and waveform modeling reveal abundant marine ice in former rifts and basal crevasses within Crary Ice Rise, Antarctica

Journal of Glaciology, 2021
Crary Ice Rise formed after the Ross Ice Shelf re-grounded ~1 kyr BP. We present new ice-penetrating radar data from two systems operating at center frequencies of 7 and 750 MHz that confirm the ice rise is composed of a former ice shelf buried by ...
Trevor R. Hillebrand, Howard Conway, Michelle Koutnik, Carlos Martín, John Paden, J. Paul Winberry   +5 more
doaj   +1 more source

Joint geodetic and seismic analysis of surface crevassing near a seasonal glacier-dammed lake at Gornergletscher, Switzerland

Annals of Glaciology, 2019
Seasonal lake Gornersee forms at the confluence of Gornergletscher and Grenzgletscher, Switzerland, and experiences outburst floods annually in midsummer.
Louis Garcia, Karen Luttrell, Debi Kilb, Fabian Walter   +3 more
doaj   +1 more source

AUTOMATYCZNA DETEKCJA I LOKALIZACJA WSTRZĄSÓW MIKROSEJSMICZNYCH NA LODOWCU HANSA NA SPITSBERGENIE [PDF]

Przegląd Geofizyczny
The article presents preliminary results of seismicity studies of Hans Glacier in Spitsbergen. Data from the period 26.07-02.08.2021 were recorded using a network of 8 single-component, short-period geophones located on the surface of the glacier.
Mateusz Olszewski, Wojciech Gajek
doaj   +1 more source

Tides modulate crevasse opening prior to a major calving event at Bowdoin Glacier, Northwest Greenland

Journal of Glaciology, 2020
Retreat of calving glaciers worldwide has contributed substantially to sea-level rise in recent decades. Mass loss by calving contributes significantly to the uncertainty of sea-level rise projections.
Eef van Dongen, Guillaume Jouvet, Andrea Walter, Joe Todd, Thomas Zwinger, Izumi Asaji, Shin Sugiyama, Fabian Walter, Martin Funk   +8 more
doaj   +1 more source

7000 Years of Aboriginal Mining at Sugarloaf Hill in the Riverland Region of South Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Silcrete and chert are commonly represented in Aboriginal archaeological lithic assemblages across large parts of the southwestern Murray‐Darling Basin (MDB). In South Australia (SA), these materials were sourced from a series of quarries located along the incised course of the Murray River through the upper Riverland region.
Craig Westell, Ian Moffat, Richard Fullagar, Amy Roberts, Justine Kemp, Mike Morley, Marc Fairhead, Simon Hoad, River Murray and Mallee Aboriginal Corporation   +8 more
wiley   +1 more source

Crevasse effects on glacier surface temperature from thermal imagery

Journal of Glaciology
Thermal imagery was collected for 26 hours over a crevassed region within the accumulation zone of the Haupapa/Tasman Glacier, New Zealand. During the night, the imaged snow surfaces associated with crevasses cooled slower than non-crevassed surfaces ...
Tim Kerr, Heather Purdie, Paul Bealing, Benjamin Schumacher, Marwan Katurji, Rajasweta Datta, Peyman Zawar-Reza   +6 more
doaj   +1 more source

Aoraki Mount Cook: Environmental Change on an Iconic Mountaineering Route

Mountain Research and Development, 2018
Aoraki Mount Cook is New Zealand's highest mountain and a popular destination for climbers. This study combined historical accounts, photos, and geophysical surveys with modern-day spatial analysis, popular narratives, and interviews to explore how ...
Heather Purdie, Tim Kerr
doaj   +1 more source

Interplanetary frontiers: terraforming from an invasion science perspective

Oikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts, Ronaldo Sousa, Phillip J. Haubrock   +2 more
wiley   +1 more source

Fifty-five years of Russian radio-echo sounding investigations in Antarctica

Annals of Glaciology, 2020
Russian (former Soviet) systematic studies of Antarctica by radio-echo sounding (RES) and ground-penetrating radar technique (GPR) were commenced in 1964.
Sergey Popov
doaj   +1 more source

Revised classification of glaciofluvial landforms in the Finnish sector of the Fennoscandian Ice Sheet

Boreas, EarlyView.
Effective and sustainable land use, conservation, and the use of geological resources (incl. raw materials, aggregates and groundwater) require a clear classification system of sedimentary units, with well‐defined vocabulary and unified mapping practices.
Jussi Hovikoski, Jukka‐Pekka Palmu, Tapio Väänänen, Markus Valkama, Antti E. K. Ojala, Satu Putkinen, Reijo Pitkäranta   +6 more
wiley   +1 more source