Browsing by Subject "Geophysics."
Now showing items 1-20 of 59
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Aerodynamic and electrodynamic processes in tornadoes /
(The University of Oklahoma., 1963) -
Anisotropic effects upon amplitude-vs-offset response in realistic earth models.
(2000)The derivation and computation of the reflection coefficient for general anisotropic media is described along with software written to implement the computation. This program is then used to compare the reflection response ... -
Aspects of Seismicity Clustering, Subsurface Structure, and Stress Orientations
(2020-05-08)I study aspects of seismicity clustering, subsurface structures and stress orientations by analyzing seismicity at two of the most seismically active regions in the USA (Hawaii and Central USA). The notable volcanic, ... -
Assessment of spectral attributes in identifying gas hydrates in seismic data from the Pegasus Basin, offshore New Zealand
(2023-05-13)Gas hydrates are formed in the subsurface along shallow ocean basins or in permafrost settings, and are commonly identified in the seismic data by the bottom-simulating reflector (BSR). Various methods have been employed ... -
Automated classification of rainfall systems using statistical characterization.
(2003)A general, completely automated procedure for classifying rainfall systems is developed. The technique is flexible and universally applicable, in that any rainfall system can be classified regardless of size, location, ... -
AVO polarization attributes and hodograms.
(2001)A case study using seismic data from the Gorgon field of the NW Shelf of Australia is done to validate the methodology. Application of this new scheme can help one recognize AVO anomalies and enhances AVO interpretation. -
Characterizing components of uncertainty in hydrologic modeling using an ensemble approach.
(2003)In hydrologic modeling, uncertainties are known to reside in model inputs, i.e., rainfall estimates, model parameters, observations of streamflow, and in some cases in the model structure itself. Estimation of the total ... -
Chemical remagnetization caused by burial diagenesis: Testing the hypothesis in the Pennsylvanian Belden Formation, Colorado.
(1997)The TVRM present in Belden carbonates is pervasive whereas the CRM is widespread but site specific, thus providing an opportunity to magnetically characterize the two components. Specimens with the CRM have higher saturation ... -
A Comparison Of Coherence Enhancement, Probabilistic Neural Network, And Convolutional Neural Network Fault Imaging With Manual Interpretation In The Taranaki Basin Area, New Zealand.
(2021-05-17)Fault identification is a key aspect in seismic interpretation, and model generation is an essential task to achieve any accurate, precise reservoir modeling or structural framework that solves problems in the subsurface. ... -
CONTROLS OF PRE-EXISTING NORMAL FAULTS ON THE GEOMETRY AND LOCATION OF THRUST FAULTS IN FOLD-THRUST BELTS
(2016)Pre-existing normal faults are commonly cited as influencing both the sequence of faulting and the location of thrust faults in fold-thrust belts. Scaled experimental models for both frictional and ductile detachments were ... -
Determination of seismic attenuation from surface and downhole measurements.
(2000)Intrinsic attenuation measurement from VSP using spectral ratios is seriously affected by scattering, coupling variations, and difficulties in first-arrival isolation. An algorithm to estimate intrinsic attenuation from ... -
DEVELOPMENT OF INDEPENDENT COMPONENT ANALYSIS FOR RESERVOIR GEOMORPHOLOGY AND UNSUPERVISED SEISMIC FACIES CLASSIFICATION IN THE TARANAKI BASIN, NEW ZEALAND.
(2018)During the past two decades, the number of volumetric seismic attributes have increased to the point in which interpreters are overwhelmed and cannot analyze all the information available. Principal Component Analysis (PCA) ... -
Diffraction imaging using Geometric-mean Reverse-Time Migration and Common Reflection Surface
(2017-12)Diffracted waves contain a great deal of valuable information about small-scale subsurface structure such as faults, pinch-outs, karsts and fractures, which are tightly related to hydrocarbon accumulation and production. ... -
A dual-porosity model for two-phase flow in deforming porous media.
(1999)In this dissertation, an approach, which is based on the dual-porosity concept and takes into account rock deformations, is presented to derive rigorously a set of coupled differential equations governing the behavior of ... -
Dynamic adjustment in an idealized numerically-simulated bow echo.
(2002)While the large-scale atmosphere is governed by relatively simple dynamic balance relations that describe the mutual adjustment between the mass and wind fields (e.g., hydrostatic and geostrophic balances), no simple ... -
Effect of pressure depletion on hydrocarbon recovery in naturally fractured reservoirs.
(2006)The link between well test analysis, the material balance equation, and the elastic properties of the rock resides in the fluid storage capacity. Thus, in this study, the influence of stress on the mechanical behavior of ... -
Effects of nesting frequency and lateral boundary perturbations on the dispersion of limited-area ensemble forecasts.
(2003)To help restore error variance and LAM ensemble dispersion, a new method is developed to apply statistically consistent LBC perturbations that remain spatially and temporally coherent while passing through the boundaries. ... -
Ensemble cloud model applications to forecasting thunderstorms.
(2000)A cloud model ensemble forecasting approach is developed to create forecasts which describe the range and distribution of thunderstorm lifetimes that may be expected to occur on a particular day. Such forecasts are crucial ... -
Finite element analysis of the heat and mass transfer in a magma body.
(1981)The conductive moving boundary model developed in this study indicates that the solidification of magma takes more time when the latent heat of fusion is considered. The convective moving boundary model shows that the ...