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Frequency response function analysis of the equatorial margin of Brazil using gravity and bathymetry

Creator:: Macario, Ana L. G.
Abstract:: The overall objective of this study is to address questions concerning the long-term mechanical strength of the lithosphere across the equatorial margin of Brazil. The approach used in this study consists of calculating the frequency response function estimates, also called admittance, using gravity and bathymetry data. These experimental estimates are...
Resource Type:: Masters Thesis
Full Text:: based on a O.125 grid derived by RH. Rapp, 1985) T:D 2O © 30 ,z Q / (6 C ((S [L1 I j jBRAZIL] 60t

Crustal structure and thermal gradients of the northern Gulf of California determined using spectral analysis of magnetic anomalies

Creator:: Zamora, Osvaldo Sanchez
Abstract:: Geophysical surveys in the Gulf of California provided the data to construct contour maps of bathymetry, free-air anomalies and total field magnetic anomalies for the area north of 27° N. Major faults such as the Ballenas- Salsipuedes, Tiburón, Guaymas, and the South Cerro Prieto are clearly observable on these maps....
Resource Type:: Dissertation
Full Text:: Curie-point isotherm. Assuming a Curie-point temperature of 580°C and a thermal conductivity of 2.2 W

Analysis and interpretation of magnetic anomalies observed in north-central California

Creator:: Huppunen, JoAnne L.
Abstract:: To assist in the assessment of the geothermal potential of north-central California and to aid in defining the geologic transitions between the physiographic provinces of the Klamath Range, the Cascade Range, the Modoc Plateau, the Great Valley, and the Sierra Nevada Range, personnel from the Geophysics Group in the College...
Resource Type:: Dissertation
Full Text:: °Th sanviIIe #fA J\ PS USGS C(T 1tPVAL OAAMA..0 MAPS IFEET L___ ' PAMSVERSC MCRCAICP .o . N 'M

Structure of the Panama Basin from marine gravity data

Creator:: Barday, Robert James
Abstract:: In order to quantitatively examine the crustal structure of the Panama Basin without the benefit of local seismic refraction data, the following assumptions were made: (1) No significant lateral changes in density take place below a depth of 50 km. (2) The densities of the crustal layers are those of...
Resource Type:: Masters Thesis
Full Text:: mistakes. A note of appreciation is extended to Dr. Richard J. Blakely for his prompt review of this

Interpretation of gravity measurements made in the Cascade Mountains and adjoining basin and range province in central Oregon

Creator:: Pitts, Gerald Stephen
Resource Type:: Masters Thesis
Full Text:: Abstract approved Richard W. Couch Gravity measurements made during the summers of 1975 and 1976, and

Crustal structure of the Baja Peninsula between latitudes 22 ̊N and 25 ̊N

Creator:: Huehn, Bruce
Abstract:: Geophysical data collected in 1975 and 1976 reveal major crustal and tectonic elements of the continental margin of southern Baja California. Gravity, magnetic, seismic reflection and bathymetric data show seaward extension of the islands enclosing Magdalena and Almejas Bays. A seismic reflection profile, oriented approximately normal to the trend of...
Resource Type:: Masters Thesis
Full Text:: LATITUDES 22°N and 25°N Abstract approved: Richard W. Couch Geophysical data collected in 1975 and 1976

Geothermal and structural implications of magnetic anomalies observed over the southern Oregon Cascade Mountains and adjoining Basin and Range province

Creator:: McLain, William Henry
Resource Type:: Masters Thesis
Full Text:: - )) ) ( / 7 0 S \\ 0 ..,..;; (ç (\ \ 'c i-. c---7--T \ )lF \_1 ) . . \ \J / .:. -r J 0) .88.) ( 1 400

Long wavelength gravity anomalies and implications concerning a descending lithospheric slab in the Pacific Northwest

Creator:: MacFarlane, William Thomas
Abstract:: The thermal regime of a postulated descending lithospheric slab is calculated. The gravity anomaly associated with such a structure is large in amplitude and long in wavelengh. Observed free-air gravity anomalies in the Pacific Northwest do not indicate a gravitational effect due to a descending slab. Two hypothetical compensation models...
Resource Type:: Dissertation
Full Text:: C onfiguration 24 Thermal Regime of the Descending Lithospheric Slab 27 Gravity Anomaly of the

Aeromagnetic measurements, magnetic source depths, and the Curie point isotherm in the Vale-Owyhee, Oregon geothermal area

Creator:: Boler, Frances M.
Resource Type:: Masters Thesis
Full Text:: () indicate the expected value C." a, 4- 0 E C c\J cs4 csJ \kmax 0.0l8 cycles/km 5.8±O.4 km 17

Crustal structure of the northwestern continental margin of the Indian subcontinent from gravity and magnetic data

Creator:: Soofi, Muhammad Asif
Abstract:: The continental margin off the coast of Pakistan between the Murray ridge and the Gulf of Cambay has been studied in this work using gravity, magnetic and bathymetric data. Two dimensional gravity and magnetic models based on free-air gravity and residual magnetic data are developed along a north-south profile off...
Resource Type:: Masters Thesis
Full Text:: '6 -T4, PAKIa.N. O - Oi. 1ND140 0 = <(IE \c ,c/ 17 J 0.z_J 4 0 Cl, U

ScholarsArchive@OSU

Frequency response function analysis of the equatorial margin of Brazil using gravity and bathymetry

Crustal structure and thermal gradients of the northern Gulf of California determined using spectral analysis of magnetic anomalies

Analysis and interpretation of magnetic anomalies observed in north-central California

Structure of the Panama Basin from marine gravity data

Interpretation of gravity measurements made in the Cascade Mountains and adjoining basin and range province in central Oregon

Crustal structure of the Baja Peninsula between latitudes 22 ̊N and 25 ̊N

Geothermal and structural implications of magnetic anomalies observed over the southern Oregon Cascade Mountains and adjoining Basin and Range province

Long wavelength gravity anomalies and implications concerning a descending lithospheric slab in the Pacific Northwest

Aeromagnetic measurements, magnetic source depths, and the Curie point isotherm in the Vale-Owyhee, Oregon geothermal area

Crustal structure of the northwestern continental margin of the Indian subcontinent from gravity and magnetic data

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