Abstract Glacial hydraulic tremor (GHT) can be monitored to observe changes in location and distribution of water flow beneath glacial ice, allowing the spatiotemporal evolution subglacial hydrology studied continuously remotely. We use frequency-dependent polarization analysis (FDPA) classify types GHT assess its spatio-temporal extent Rhonegletscher, Switzerland, a continuous seismic record t...

and Introduction: A synthesis of a diverse suite of observations of H2O-related landforms that are possible Mars analogs from terrestrial polar regions (Devon Island in the Arctic; the Dry Va lleys of Antarctica) put into question any requirement for extended episode(s) of warm and wet climate in Mars’s past. Geologically transient episodes of localized H2O cycling, forced by exogenic impacts, ...

Divergent flow of the West Antarctic Ice Sheet on the outer continental shelf of the Amundsen Sea during the late Quaternary" (2007). Related Publications from ANDRILL Affiliates. Paper 7. Summary Understanding the past glacial history of regions undergoing potential rapid deglaciation is essential in order to estimate the possible threat of sea level rise. Recently acquired data have given new...

[1] We simulate three-dimensional ice temperature fields to examine spatial-temporal history of the subglacial thermal environment during the last glacial cycle. Model results suggest that 60–80% of the Laurentide Ice Sheet was coldbased (frozen to the bed) at the LGM, and therefore unable to undergo large-scale basal flow. The fraction of warm-based ice increases significantly through the ensu...

Introduction: Many workers have described the thumb-print terrain (TT)—terrain consisting of nested curvilinear features visible throughout much of the Northern hemisphere of Mars in Viking data (see Fig. 1)—and the troughs with medial ridges frequently associated with that terrain [1-7, see references within]. Interpretations of TT have included: accumulations of eolian deposits; ice-shoved gl...

A long-lasting question in glacial geology is how and fast glaciers were able to shape the distinctive landscapes of Alps. This study contributes understanding on formation overdeepened basins, especially processes amount time involved. We examine remarkably high (150 m) cross-valley bedrock riegel associated overdeepening located front Trift glacier central Swiss combined approach field survey...

Abstract. In steep landscapes, river incision sets the pace of landscape evolution. Transport coarse sediment controls by evacuating material delivered to channels landslides. However, large landslide-derived boulders that impede bedrock erosion are immobile even in major runoff-driven floods. Glacial lake outburst floods (GLOFs) mobilize these and drive incision, yet their role regional-scale ...

Abstract. We drilled a 210 m-thick succession of Quaternary sediments and extended it 30 m upsection with information that we collected from an adjacent outcrop. In the 240 identified 12 different lithofacies, grouped them into five facies assemblages, distinguished two major sedimentary sequences. A sharp contact at 103 depth cuts off cross-beds in sequence separates overlying horizontal beds ...