Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Michael J. Tompkins"'
Publikováno v:
Geophysical Prospecting. 64:320-334
This paper introduces an efficiency improvement to the sparse-grid geometric sampling methodology for assessing uncertainty in non-linear geophysical inverse problems. Traditional sparse-grid geometric sampling works by sampling in a reduced-dimensio
Publikováno v:
Volume 1: Operations and Maintenance, Aging Management and Plant Upgrades; Nuclear Fuel, Fuel Cycle, Reactor Physics and Transport Theory; Plant Systems, Structures, Components and Materials; I&C, Digital Controls, and Influence of Human Factors.
Reactor recirculation motor generator lube oil twin screw pumps are commonly found in nuclear power plants and throughout industry. In a vertical mounting configuration in which the electric motor is bolted atop the twin screw pump in an unsupported
Autor:
Michael J. Tompkins
Publikováno v:
GEOPHYSICS. 77:ID1-ID8
We estimated posterior model covariances by randomly perturbing data and start model vectors with samples drawn from prior probability distributions, solving the corresponding deterministic inversion for each sample, and integrating the resulting mod
Publikováno v:
GEOPHYSICS. 77:W1-W15
We analyze, through linear algebra, the topography of the cost functional in linear and nonlinear inverse problems with the aim of illuminating general characteristics. To a first-order approximation, the local data misfit function in any inverse pro
Publikováno v:
GEOPHYSICS. 69:140-151
We present finite‐difference simulation results that lend new insight into the behavior of multicomponent induction logging tools when in the presence of anisotropic layers, boreholes, and invasion zones. We use four independent models to investiga
Publikováno v:
Geophysical Journal International. 145:172-186
SUMMARY Measurements of compressional wave attenuation are presented for 30 low-porosity (1 = 0.4-8.8 per cent) oceanic basalts collected from 10 oceanic drill holes. The first laboratory measurements of shear wave attenuation in oceanic basalts are
Publikováno v:
Tectonics. 19:919-942
We present new seismic data from a basement high beneath the southern Iberia Abyssal Plain that appears, from the latest Ocean Drilling Program (ODP) results and indirectly from various seismic observations, to consist of lower continental crustal ma
Publikováno v:
Geophysical Research Letters. 26:1321-1324
Laboratory data are reported for ultrasonic compressional wave attenuation (αp) as a function of pore pressure in a Juan de Fuca Ridge dredge basalt. Four experiments have been made to determine the relationships between attenuation and quality fact
Publikováno v:
Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18-21 November 2013.
Joint integration of seismic and electromagnetic (EM) data has been studied for better characterizing hydrocarbon reservoir because two surveys can give complementary information on reservoir properties. The advantages of joint integration of differe
Publikováno v:
SEG Technical Program Expanded Abstracts 2013.
Joint integration of seismic and electromagnetic (EM) data can improve the quality of characterization of hydrocarbon reservoirs because these two types of measurement are based on fundamentally different physics so they are sensitive to different re