Zobrazeno 1 - 10
of 23
pro vyhledávání: '"E.F. Laine"'
Publikováno v:
Geophysical Prospecting. 29:627-638
High-frequency electromagnetic probing is used to monitor the rate and direction of flow of fluids injected into the ground. This method shows the potential for providing more detailed information than procedures presently used. The experimental tech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50795d11910ec17b420ecf72ef285c55
https://doi.org/10.1111/j.1365-2478.1981.tb00699.x
https://doi.org/10.1111/j.1365-2478.1981.tb00699.x
Publikováno v:
Radio Science. 11:285-293
Experiments were conducted to determine the in situ relative dielectric constant ϵr and skin depth δ of hard rock in a permafrost region. In the Brooks Range in northern Alaska, measurements of transmission attenuation and transmission phase shift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1b34f68106af1d19c7b6dc7b70b2d7a
https://doi.org/10.1029/rs011i004p00285
https://doi.org/10.1029/rs011i004p00285
Publikováno v:
GEOPHYSICS. 44:1667-1676
Electromagnetic (EM) probing between boreholes is useful for locating high‐contrast geophysical anomalies such as a tunnel. Theoretical and experimental studies of EM field interaction with a tunnel show that minima in the received signal can be us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4761adaec6e581c2eb4285c378ff3929
https://doi.org/10.1190/1.1440929
https://doi.org/10.1190/1.1440929
Publikováno v:
Journal of the Geotechnical Engineering Division. 106:759-766
Electromagnetic probing can be used to assess the integrity of concrete cofferdam seals. Data are taken using high-frequency transmitter and receiver antennas installed in separate boreholes drilled in the concrete seal, and the spatial variation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9214e30b67d8921ae7cf1429d3768ad1
https://doi.org/10.1061/ajgeb6.0001003
https://doi.org/10.1061/ajgeb6.0001003
Autor:
E.F. Laine
Publikováno v:
GEOPHYSICS. 52:1457-1465
Cross‐borehole seismic velocity and high‐frequency electromagnetic (EM) attenuation data were obtained to construct tomographic images of heavy oil sands in a steam‐flood environment. First‐arrival seismic data were used to construct a tomogr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de67cf2e2be5ac9216cc3ab6a4899cc8
https://doi.org/10.1190/1.1442263
https://doi.org/10.1190/1.1442263
Publikováno v:
IEEE Transactions on Geoscience Electronics. 14:244-249
An overview of the tilt of an electromagnetic surface wave propagating along the surface of the earth is given. High-frequency wave-tilt measurements can have important applications in low conductivity regions such as desert and permafrost areas. A s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcae2bf36954b0f7e0a986b63043476d
https://doi.org/10.1109/tge.1976.294433
https://doi.org/10.1109/tge.1976.294433
Autor:
E.F. Laine, R. Jeffrey Lytle
Publikováno v:
IEEE Transactions on Geoscience Electronics. 16:304-307
In this report we describe a design for a miniaturized directional antenna for use in geophysical exploration from boreholes. Mathematical results are given which indicate the antenna characteristics. The concept we use involves an antenna eccentrica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f12f3f8f20395586c18bce66dcdaa570
https://doi.org/10.1109/tge.1978.294588
https://doi.org/10.1109/tge.1978.294588
Autor:
E.F. Laine, R. Jeffrey Lytle
Publikováno v:
IEEE Transactions on Geoscience Electronics. 14:232-235
A computer code to plot the response of a dipole-dipole resistivity array over a many-layered earth is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9848d4545c04b210a7d87aa6a8c81320
https://doi.org/10.1109/tge.1976.294431
https://doi.org/10.1109/tge.1976.294431
LLNL made ultrahigh-frequency (450-MHz) electromagnetic borehole-to-borehole transmissions in the Stripa Mine near Guldsmedshyttan, Sweden, in April 1979. Transmission loss measurements were made between four sets of 76-mm boreholes 30 m long, locate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6261c966dd4c056d1cdd15a5b80f711
https://doi.org/10.2172/5097401
https://doi.org/10.2172/5097401
