Electrical Resistivity Measurements on the Rock Glaciers of Grizzly Creek, St Elias Mountains, Yukon

Evin, Michèle; Fabre, Denis; Johnson, Peter G.

doi:10.1002/(sici)1099-1530(199732)8:2<179::aid-ppp247>3.0.co;2-c

Cited by 25 publications

(22 citation statements)

References 10 publications

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“…High resistivity of the sediment measured in the southwestern portion of the moraine dam (~11 kΩ-m) suggests the presence of interstitial ice (Evin et al, 1997;Gardaz, 1997). Although the resistivity of massive ice may reach 1000 kΩ-m, sediment with interstitial ice or ice lenses can have bulk resistivity ranging from 10 to 100 kΩ-m (depending on the ice content), suggesting in our case interstitial ice.…”

Section: Resistivity Interstitial Ice and Permafrostmentioning

confidence: 99%

“…In contrast, the resistivity of massive ice can reach 1 MΩ-m. Sediment with interstitial ice or ice lenses usually has bulk resistivity ranging from 10 to 100 kΩ-m, depending on the overall ice content (e.g. Evin et al, 1997).…”

Section: Electrical Resistivity Soundingmentioning

confidence: 99%

“…5A): (1) we interpret a relatively low resistivity layer of 2 kΩ-m as variably-saturated till extending to a depth of 2 m. (2) Below this, resistivity increases to about 11 kΩ-m for roughly 20 m. This layer of moraine sediment most likely contains interstitial ice, as evidenced by the high measured resistivity (c.f. Evin et al, 1997;Gardaz, 1997). (3) Beneath the moraine, resistivity of 3 kΩ-m likely represents the fractured and saturated metasedimentary bedrock.…”

Section: Electrical Resistivity Soundingsmentioning

confidence: 99%

“…As a complement to SP data, electrical resistivity soundings can characterize site stratigraphy or locate resistive anomalies in the subsurface caused by massive or interstitial ice (e.g. Evin et al, 1997;Gardaz, 1997;Haeberli et al, 2001). Resistivity information is also required for numerical interpretation of SP data.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Self-potential investigation of moraine dam seepage

Moore

Bolève

Sanders

et al. 2011

Journal of Applied Geophysics

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Section: Resistivity Interstitial Ice and Permafrostmentioning

confidence: 99%

Section: Electrical Resistivity Soundingmentioning

confidence: 99%

Section: Electrical Resistivity Soundingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Self-potential investigation of moraine dam seepage

Moore

Bolève

Sanders

et al. 2011

Journal of Applied Geophysics

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“…Hoekstra and McNeill,1973;Harada et al,1991;. Conventional DC resistivity sounding involves the placement of simple four-electrode arrays and has been the most common ly used geophysical technique for identifying the occurrence of frozen ground in mid-lati tude high mountains (Fisch et al,1977;King et al,1987;Barsch and King,1989;Evin and Fabre,1990;Hoelzle,1993;Evin et al,1997;Berthling et al,1998;Ishikawa and Hirakawa, 2000),circumpolar areas (Seguin,19.78;Seguin and Frydecki,1990;Gilmore and Clayton,1997;Harada and Yoshikawa,1998;and Antarctica (McGin nis et al,1973 (Griffiths and Barker, 1993;Loke and Barker,1995;.This technique yields details of subsurface struc ture both horizontally and vertically,and is considered effective for investigating frozen ground under complicated topography and/or subsurface structures (Hauck and Vo nder Muhll,1999;Kneisel et al,2000;Ishikawa et al,2001;Vonder Muhll et al, 2001;Ishikawa,2003;Ishikawa et al,2003a;Reynard et al,2003).Repeated(time-lapse) DC resistivity imaging has been shown as use ful for observing groundwater movements (e.g. Daily et al,1992;Barker and Moore, 1998)and for monitoring seasonal changes in unfrozen water contents in the mountain permafrost of European Alps (Hauck,2002).…”

mentioning

confidence: 99%

Application of DC Resistivity Imaging to Frozen Ground Investigations

Ishikawa¹

2004

Journal of the Japanese Society of Snow and Ice

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Frozen ground in discontinuous permafrost zones is characterized by complicated spatial distribu tion and large seasonal fluctuations in unfrozen water contents.Direct current(DC)resistivity imaging performed in the northeastern Mongolia,Daisetsu Mountains of northern Japan and Kanchanjunga Himal of eastern Nepal demonstrate this technique as an effective method for observing frozen ground characteristics which supplemented with additional observation such as ground temperature measure ments.DC resistivity imaging is shown to be useful for delineating isolated frozen ground and buried ice bodies in the areas with large topographic and subsurface inhomogeneties.Seasonal changes in resistivity values at the Mongolian site are related to the spatio-temporal changes in soil water condition both in the active and upper layers of the permafrost.These are advantages unique to DC resistivity imaging that are not found with conventional methods such as one-dimensional geophysical soundings of plane-layer approximations,excavation and time-domain reflectometry(TDR)measurements.

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Morphology and surface structures of Maxwell Creek rock glaciers, St Elias mountains, Yukon: rheological implications

Johnson

1998

Permafrost Periglac. Process.

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The dominant role of mass movement processes in the formation of south‐west Yukon paraglacial landscapes is exemplified by a tributary of Maxwell Creek. Rock glaciers occur along most of the length of the mid‐valley. Two large rock glaciers flowing from cirques on the east and west sides of the valley are confluent in the centre of the valley, and have a combined lobe extending 1 km downvalley. Morphological contrasts between the moraines and flow lobes of the east form, and the flow ridges of the west form, indicate different processes of movement at the surface. Sections in the surface deposits indicate movement of the mass of material in the lobes but demonstrate a combination of overriding and compression flow in the ridges. Near surface composition varies from large boulders with voids, to boulders with gravel and fines matrix and with the ice content varying from interstitial to massive infilling of the voids. Palaeosols sampled 1 m underneath overriding ridges were dated at 1480 and 660 a BP. The rock glaciers produced a combined central valley landform at the end of the Wisconsin. Neoglacial activity resulted only in confluence of the rock glaciers, without extension downvalley. The combination of the compressional and overriding ridges with the variability of the sediments and ice content is indicative of a complex surface rheology. Comparison with the ridges and lobes of rock glaciers in other valleys suggests that this surface variability is common on the rock glaciers of the southwest Yukon. © 1998 John Wiley & Sons, Ltd.

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Electrical Resistivity Measurements on the Rock Glaciers of Grizzly Creek, St Elias Mountains, Yukon

Cited by 25 publications

References 10 publications

Self-potential investigation of moraine dam seepage

Self-potential investigation of moraine dam seepage

Application of DC Resistivity Imaging to Frozen Ground Investigations

Morphology and surface structures of Maxwell Creek rock glaciers, St Elias mountains, Yukon: rheological implications

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