Index Catalog // ScholarsArchive@OSU

Imaging crustal structure in southwestern Washington with smalll magnetometer arrays

Creator:: Egbert, Gary D. and Booker, John R.
Abstract:: We use data from a series of small (three to five stations) overlapping magnetovariational (MV) arrays to image variations of vertically integrated electrical conductivity in the crust of southwestern Washington. Two principal structures are revealed: a large north-south trending anomaly (the southern Washington Cascades Conductor (SWCC), which has been detected...
Resource Type:: Article
Full Text:: College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis JOHN R. BOOKER

Very long period magnetotellurics at Tucson Observatory: implications for mantle conductivity

Creator:: Egbert, Gary D. and Booker, John R.
Abstract:: In a companion paper (Egbert et al., this issue) we describe the estimation of very long period (0.16 < T < 91 days) magnetotelluric (MT) impedances from 11 years of data collected at the Tucson geomagnetic observatory. Here we discuss the implications of these data for mantle conductivity. Using minimum...
Resource Type:: Article
Full Text:: Conductivity GARY D. EGBERT College of Oceanography, Oregon State University, Corvallis JOHN R. BOOKER

High-resolution electromagnetic imaging of the San Andreas fault in Central California

Creator:: Unsworth, Martyn, Egbert, Gary D., and Booker, John
Abstract:: Although there is increasing evidence that fluids may play a significant role in the earthquake rupture process, direct observation of fluids in active fault zones remains difficult. Since the presence of an electrically conducting fluid, such as saline pore water, strongly influences the overall conductivity of crustal rocks, electrical and...
Resource Type:: Article
Full Text:: and Atmospheric Sciences, Oregon State University, Corvallis John Booker Geophysics Program

Very long period magnetotellurics at Tucson Observatory: estimation of impedances

Creator:: Egbert, Gary D., Booker, John R., and Schultz, Adam
Abstract:: Eleven years (1932-1942) of electric potential and magnetic measurement at the Tucson observatory represent a unique very long period magnetotelluric (MT) data set. We report here on a careful reanalysis of this data using modern processing techniques. We have developed and used novel methods for separating out the quasi-periodic daily...
Resource Type:: Article
Full Text:: . EGBERT College of Oceanography, Oregon State University, Corvallis JOHN R. BOOKER Geophysics

The 1993, Scott Mills aftershock sequence : moment tensor inversion and joint hypocenter determination

Creator:: Schurr, Bernd D.
Resource Type:: Masters Thesis
Full Text:: enthusiasm of my advisor John Nabelek. He provided me with both freedom and guidance as was necessary to

Optimization of seasonal irrigation scheduling by genetic algorithms

Creator:: Canpolat, Necati
Abstract:: In this work, we first introduce a novel approach to the long term irrigation scheduling using Genetic Algorithms (GAs). We explore the effectiveness of GAs in the context of optimizing nonlinear crop models and describe application requirements and implementation of the technique. GAs were found to converge quickly to near-optimal...
Resource Type:: Dissertation
Full Text:: Genetic Algorithms. Abstract approved: John P. Bolte In this work, we first introduce a novel approach

Deconvolving orbital surface waves for the source duration of large earthquakes and modeling the receiver functions for the earth structure beneath a broadband seismometer array in the Cascadia subduction zone

Creator:: Li, Xiao-qing, 1963-
Resource Type:: Dissertation
Full Text:: would like to thank my advisor Dr. John Nabelek who provided support and guidance for my Ph.D. program

The nomenclature of crime and violence as it appears in the educational and criminal justice systems

Creator:: Kincaid, John Thomas
Abstract:: In many schools, drugs, vandalism, assaults, thefts, and violence against both students and teachers have destroyed the orderly atmosphere needed for teaching and learning. While juvenile criminal behavior, both in school and elsewhere, is caused by a large and complex set of sociological and psychological conditions, there is evidence that...
Resource Type:: Dissertation
Full Text:: the educational and criminal justice systems AN ABSTRACT OF THE THESIS OF John Kincaid for the

An efficient data-subspace two-dimensional magnetotelluric inversion and its application to high resolution profile across the San Andreas Faults at Parkfield, California

Creator:: Siripunvaraporn, Weerachai
Resource Type:: Dissertation
Full Text:: . Shaul Levi, Dr. John Chen, and graduate representative Dr. Cyrus Field for their helpful comments and

Dynamic instability of stratified shear flow in the upper equatorial Pacific

Creator:: Sun, Chaojiao
Resource Type:: Dissertation
Full Text:: - ment and support. This study originated from a class project when John Allen taught the "dynamic

ScholarsArchive@OSU

Imaging crustal structure in southwestern Washington with smalll magnetometer arrays

Very long period magnetotellurics at Tucson Observatory: implications for mantle conductivity

High-resolution electromagnetic imaging of the San Andreas fault in Central California

Very long period magnetotellurics at Tucson Observatory: estimation of impedances

The 1993, Scott Mills aftershock sequence : moment tensor inversion and joint hypocenter determination

Optimization of seasonal irrigation scheduling by genetic algorithms

Deconvolving orbital surface waves for the source duration of large earthquakes and modeling the receiver functions for the earth structure beneath a broadband seismometer array in the Cascadia subduction zone

The nomenclature of crime and violence as it appears in the educational and criminal justice systems

An efficient data-subspace two-dimensional magnetotelluric inversion and its application to high resolution profile across the San Andreas Faults at Parkfield, California

Dynamic instability of stratified shear flow in the upper equatorial Pacific

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