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Showing 1 to 12 of 12 for “"Patterned Ground"”.
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A Comparison of Relict and Active Terrestrial Patterned Ground as an Analog for Mars
<p>Patterned ground is a ubiquitous landform in periglacial regions of Earth and is also present across the mid to high latitudes of Mars. The association of terrestrial patterned ground to the presence of subsurface water ice in the form of permafrost that develops a seasonal ‘wet’ active layer …
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Automatic Classification and Segmentation of Patterned Martian Ground Using Deep Learning Techniques
… of meaningful data. Martian polygonally cracked ground is actively studied by planetary geologists and may be indicative of subsurface water. Filtering images containing these polygonal features can be used as a case study for science autonomy and to reduce the overhead associated with parsing …
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Periglacial landforms and processes in the southern Kenai Mountains, Alaska
… tors, a string bog, and various for111S of patterned ground such as sorted circles, sorted polygons, earth hummocks, sorted steps, sorted stripes, and small ice-wedge polygons.</p> <p>Ground temperature measurements indicate that permafrost recently existed in the area but is no longer …
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SiGe BiCMOS RF ICs and Components for High Speed Wireless Data Networks
… and modeling of on-chip spiral inductors with patterned ground shields, which are placed between the inductor coil and the underlying substrate in order to improve the inductor quality factor (Q). The shield prevents the coupling of energy away from the inductor spiral to the typically lossy Si …
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Periglacial Geomorphological Mapping of the Comanche Peak Area . Mummy Range, Larimer County, Colorado
… soil creep and cryoplanation surfaces. The patterned ground features, sorted polygons and sorted stripes develop only at elevations above 11,200 ft. (3368 m). A map shows all of the morphometry of the periglacial landscape. The periglacial landform development is inactive at this time. The …
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Modelling the Thermal Dynamics of Polygonal Soil Structures in the Permafrost of the Lena Delta, Northern Siberia
Patterned ground structures characterised by strong heterogeneities in surface and subsur- face properties are a common feature of permafrost landscapes in the Arctic. In this thesis, an existing permafrost model including conductive heat transfer and the phase change of water is extended to …
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Geologic Setting of the Phoenix Lander Mission Landing Site
… to have produced high velocity winds and a ground-hugging ejecta emplacement mode that destroyed or buried preexisting surfaces and rock fields out to ~10 crater radii. Patterned ground is ubiquitous, with complex polygon patterns and rock rubble piles located on older plains: ~3.3 Ga) to …
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An investigation of two periglacial landforms on ignimbrite blockslopes in Kluane National Park and Reserve, Yukon Territory
An expedition to the subarctic mountain of Campsite Peak, Yukon Territory, within the Kluane National Park and Reserve (KNPR), was conducted during the summer of 2019 to investigate two undocumented periglacial forms identified in satellite imagery. The overall goal of this MSc research is to …
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Soil and permafrost distribution, soil characterisation and soil vulnerability to human foot trampling, Wright Valley, Antarctica
… Field evidence of cryoturbation includes patterned ground, sand wedges, or post-depositional distorted layering within the soil. Soils near central Wright Valley often show more development compared with those at the eastern or western ends of the valley and, where permafrost without …
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Landscape evolution of the Umbum Creek Catchment, Western Lake Eyre, Central Australia.
… from erosion creating plateaux of gypsum patterned ground and palaeo-channels on the Neales Fan were eroded to make heavily armoured mounds and associated sand dunes and sand sheets. The dominant factor influencing the evolution of the landscape in the Umbum Creek Catchment was the …
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Landscape evolution and preservation of ice over one million years old quantified with cosmogenic nuclides 26Al, 10Be, and 21Ne, Ong Valley, Antarctica
… Argosy Glacier. The valley floor is covered with patterned ground and has three distinct glacial tills. Geomorphic and stratigraphic evidence shows that these deposits originate from sublimation of debris-laden glacier ice. Buried glacier ice is still present beneath the youngest two drifts, one …
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Soil physical impacts and recovery rates following human-induced disturbances in the Ross Sea region of Antarctica
… of salt on cut surfaces; and evidence of patterned ground development. Recovery criteria were assigned a severity rating on a scale from zero to four, and the Mean Recovery Index (MRI) of the site was calculated relative to an equivalent control. Five recovery stages were defined as …