Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Allan J. Delaney"'
Publikováno v:
Journal of Environmental and Engineering Geophysics. 8:57-66
We have determined attenuation rates and relative dielectric permittivities of a fine-grained sediment formation, part of which was contaminated by hydrocarbons. Our purpose was to test previous laboratory documentation of the effects of probable ads
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caec2700c7a884074eea1b49e5287830
https://doi.org/10.4133/jeeg8.2.57
https://doi.org/10.4133/jeeg8.2.57
Publikováno v:
Geological Society, London, Special Publications. 211:275-285
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1dbf839af25582a93ac45837a06d910
https://doi.org/10.1144/gsl.sp.2001.211.01.22
https://doi.org/10.1144/gsl.sp.2001.211.01.22
Publikováno v:
Cold Regions Science and Technology. 32:107-119
Both positive and negative resistivity anomalies associated with contaminated soil have been reported in the recent literature. By positive we mean expected increases of resistivity with decreasing water content, increasing hydrocarbon content, and f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87f2444a308cb550f75fa97fe8c24b2b
https://doi.org/10.1016/s0165-232x(00)00023-9
https://doi.org/10.1016/s0165-232x(00)00023-9
Publikováno v:
Journal of Applied Geophysics. 43:281-295
We compare the ability of several practical ground-penetrating radar (GPR) array processing methods to improve signal-to-noise ratio (SNR), increase depth of signal penetration, and suppress out-of-plane arrivals for data with SNR of roughly 1. The m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9478eb315badf184b95f8aa81bb4f561
https://doi.org/10.1016/s0926-9851(99)00065-8
https://doi.org/10.1016/s0926-9851(99)00065-8
Publikováno v:
Journal of Glaciology. 46:274-286
We have defined the complex bed topography for a section of a small temperate glacier using 50 MHz monostatic short-pulse radar data and a synthetic-aperture array-processing method. The data were collected on a 100 m by 340 m array grid in the upper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42952d962eeb1105a5b8cb27cd60a650
https://doi.org/10.3189/172756500781832882
https://doi.org/10.3189/172756500781832882
Publikováno v:
GEOPHYSICS. 63:1573-1584
We have used ground‐penetrating radar to profile the depth of permafrost, to groundwater beneath permafrost, and to bedrock within permafrost in alluvial sediments of interior Alaska. We used well log data to aid the interpretations and to calculat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e777a72a4dd5f2046fc54fdc8c37a04
https://doi.org/10.1190/1.1444454
https://doi.org/10.1190/1.1444454
Publikováno v:
Journal of Glaciology. 41:68-86
Wavelets transmitted by short-pulse radar are recovered from continuous profiles and used to determine interfacial dielectric contrasts within the englacial and basal ice at the terminus area of Matanuska Glacier, Alaska, U.S.A. The field studies wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0810ba57bd47a78c7129dd92909faf9a
https://doi.org/10.1017/s0022143000017779
https://doi.org/10.1017/s0022143000017779
Publikováno v:
Water Resources Research. 28:2925-2936
Short-pulse radar operating in the UHF band was used to search for unfrozen water beneath ice blisters and within the gravels of the Sagavanirktok River floodplain near Prudhoe Bay, Alaska. The investigations were carried out in early April 1991, whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66d4b6776717a9762d4472f473ad7765
https://doi.org/10.1029/92wr01308
https://doi.org/10.1029/92wr01308
Publikováno v:
Cold Regions Science and Technology. 20:271-288
Overconsolidated sediments, seasonal seafloor freezing, and ice-bonded permafrost are unique features in shallow arctic coastal waters. They are related to low seawater temperatures and varying salinities. Seabed temperatures can be less than −1.0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::690204d41931807459f5725d01ada2da
https://doi.org/10.1016/0165-232x(92)90034-r
https://doi.org/10.1016/0165-232x(92)90034-r
Autor:
Allan J. Delaney, Paul V. Sellmann
Publikováno v:
Cold Regions Science and Technology. 18:331-336
Observations in central Alaska indicate that radon concentrations in surface soils over discontinuous permafrost seem to correspond with frozen-ground distribution. These observations were made to determine if radon measurements might provide a metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcba8c6eeb1a9fbee4eb92fb9100ff18
https://doi.org/10.1016/0165-232x(90)90029-v
https://doi.org/10.1016/0165-232x(90)90029-v