Zobrazeno 1 - 10
of 13
pro vyhledávání: '"James L. C. Lee"'
Autor:
D. T. Bell, William E. Doll, James L. C. Lee, Jeannemarie Norton, Les P. Beard, J. Scott Holladay, Jacob R. Sheehan, T. Jeffrey Gamey
Publikováno v:
Journal of Environmental and Engineering Geophysics. 17:1-17
Over the past fifteen years, notable progress has been made in the performance of airborne geophysical systems for mapping and detection of unexploded ordnance in terrestrial and shallow marine environments. For magnetometer systems, the most signifi
Autor:
William E. Doll, James L. C. Lee, T. Jeffrey Gamey, Jacob R. Sheehan, Les P. Beard, Raye Lahti, J. Scott Holladay, Andri Hanson, Jeannemarie Norton
Publikováno v:
GEOPHYSICS. 75:B211-B220
Airborne geophysical sensor systems using boom-mounted configurations now play an important role in characterizing ordnance-contaminated defense sites. Most of the systems developed to date have been magnetometer systems. These have proven ineffectiv
Autor:
Jacob R. Sheehan, Jeannemarie Norton, James L. C. Lee, Nathan W. Eklund, J. Scott Holladay, Les P. Beard, William E. Doll, T. Jeffrey Gamey
Publikováno v:
Journal of Environmental & Engineering Geophysics. 13:291-305
Magnetic and electromagnetic data collected by helicopter boom-mounted systems at three different sites permit direct comparison of the systems as to their suitability for buried ordnance detection, mapping, and discrimination. Airborne boom-mounted
Publikováno v:
Journal of Environmental and Engineering Geophysics. 11:43-52
We have developed a new helicopter-borne transient electromagnetic system, known as ORAGS-TEM, which was designed for the detection of unexploded ordnance (UXO) through very low altitude measurements. This system has already achieved considerable suc
Autor:
D. T. Bell, William E. Doll, Les P. Beard, James L. C. Lee, T. Jeffrey Gamey, J. Scott Holladay
Publikováno v:
GEOPHYSICS. 69:664-673
Field trials of a low‐flying time‐domain helicopter electromagnetic system designed for detection of unexploded ordnance have yielded positive and encouraging results. The system is able to detect ordnance as small as 60‐mm rounds at 1‐m sens
Autor:
William E. Doll, J. Scott Holladay, James L. C. Lee, Jeanniemarie Norton, Les P. Beard, T. Jeffrey Gamey, Nathan W. Eklund, Jacob R. Sheehan
Publikováno v:
Symposium on the Application of Geophysics to Engineering and Environmental Problems 2008.
Magnetic and electromagnetic data collected by helicopter boom-mounted systems at the same survey sites permit direct comparison of the systems as to their suitability for buried ordnance detection. The ORAGS-TEM system is an airborne electromagnetic
Autor:
J. Scott Holladay, William E. Doll, Les P. Beard, James L. C. Lee, T. Jeffrey Gamey, David T. Bell
Publikováno v:
Symposium on the Application of Geophysics to Engineering and Environmental Problems 2004.
Autor:
T. Jeffrey Gamey, J. Scott Holladay, D. T. Bell, James L. C. Lee, Les P. Beard, William E. Doll
Publikováno v:
17th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems.
Publikováno v:
2004, Ottawa, Canada August 1 - 4, 2004.
Electromagnetic sensors have been used for several decades to map fixed properties, such as texture, and changeable properties, such as salinity, that can strongly affect the electrical conductivity of soils. A new sensor, with stability of about 1 m