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Vibroseis Monitoring of San Andreas Fault in California
A unique data set of seismograms for 720 source-receiver paths has been collected as part of a controlled source Vibroseis experiment San Andreas Fault (SAF) at Parkfield. In the experiment, seismic waves repeatedly illuminated the epicentral region of the expected M6 event at Parkfield from June 1987 until November 1996. For this effort, a large shear-wave vibrator was interfaced with the 3-component (3-C) borehole High-Resolution Seismic Network (HRSN), providing precisely timed collection of data for detailed studies of changes in wave propagation associated with stress and strain accumulation in the fault zone (FZ). Data collected by the borehole network were examined for evidence of changes associated with the nucleation process of the anticipated M6 earthquake at Parkfield. These investigations reported significant traveltime changes in the S coda for paths crossing the fault zone southeast of the epicenter and above the rupture zone of the 1966 M6 earthquake. Analysis and modeling of these data and comparison with observed changes in creep, water level, microseismicity, slip-at-depth and propagation from characteristic repeating microearthquakes showed temporal variations in a variety of wave propagation attributes that were synchronous with changes in deformation and local seismicity patterns. Numerical modeling suggests 200 meters as an effective thickness …
Date:
June 11, 2004
Creator:
Korneev, Valeri & Nadeau, Robert
Object Type:
Article
System:
The UNT Digital Library
Site environmental report for 2003 Sandia National Laboratories, California.
Sandia National Laboratories, California (SNL/CA) is a government-owned/contractor-operated laboratory. Sandia Corporation, a Lockheed Martin Company, operates the laboratory for the Department of Energy's (DOE) National Nuclear Security Administration. The DOE Sandia Site Office oversees operations at the site, using Sandia Corporation as a management and operating contractor. This Site Environmental Report for 2003 was prepared in accordance with DOE Order 231.1A. The report provides a summary of environmental monitoring information and compliance activities that occurred at SNL/CA during calendar year 2003. General site and environmental program information is also included.
Date:
June 1, 2004
Creator:
Larsen, Barbara L.
Object Type:
Report
System:
The UNT Digital Library
California Energy Commission Public Interest EnergyResearch/Energy System Integration -- Transmission-Planning Research&Development Scoping Project
The objective of this Public Interest Energy Research (PIER)scoping project is to identify options for public-interest research and development (R&D) to improve transmission-planning tools, techniques, and methods. The information presented was gathered through a review of current California utility, California Independent System Operator (ISO), and related western states electricity transmission-planning activities and emerging needs. This report presents the project teams findings organized under six topic areas and identifies 17 distinct R&D activities to improve transmission-planning in California and the West. The findings in this report are intended for use, along with other materials, by PIER staff, to facilitate discussions with stakeholders that will ultimately lead to development of a portfolio of transmission-planning R&D activities for the PIER program.
Date:
July 1, 2004
Creator:
Eto, Joseph H.; Lesieutre, Bernard & Widergren, Steven
Object Type:
Report
System:
The UNT Digital Library
The Advanced Chemistry Basins Project: Final Report
In the next decades, oil exploration by majors and independents will increasingly be in remote, inaccessible areas, or in areas where there has been extensive shallow exploration but deeper exploration potential may remain; areas where the collection of data is expensive, difficult, or even impossible, and where the most efficient use of existing data can drive the economics of the target. The ability to read hydrocarbon chemistry in terms of subsurface migration processes by relating it to the evolution of the basin and fluid migration is perhaps the single technological capability that could most improve our ability to explore effectively because it would allow us to use a vast store of existing or easily collected chemical data to determine the major migration pathways in a basin and to determine if there is deep exploration potential. To this end a the DOE funded a joint effort between California Institute of Technology, Cornell University, and GeoGroup Inc. to assemble a representative set of maturity and maturation kinetic models and develop an advanced basin model able to predict the chemistry of hydrocarbons in a basin from this input data. The four year project is now completed and has produced set of public domain …
Date:
April 5, 2004
Creator:
Goddard, William; Meulbroek, Peter; Tang, Yongchun & Cathles, Lawrence, III
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Leo Vrana, March 20, 2004
The National Museum of the Pacific War presents an oral interview with Leonard Vrana. Vrana was born in Moravia, Texas on 21 March 1921 and attended school in a two-room building. He enlisted in the Navy in 1940. After eight weeks of boot training at San Diego, he went to Pearl Harbor assigned aboard the USS California (BB-44). After serving a while in the Motor Launch Division, he became a striker in a fourteen inch gun turret. He describes the working conditions within a turret, the job assignments and procedures involved in firing the guns. He recalls experiences during the Japanese attack on 7 December 1941 during which the ship sustained bomb and torpedo damage. Following the attack, he was assigned to clean up the bodies of his dead shipmates. The ship was taken to Bremerton for repairs during which time he went to the naval gun factory at Annapolis for eight weeks of training. Afterward, he returned to the California. Vrana was aboard ship during the invasions of the Mariana Islands and during the Battle of Surigao Strait. The ship was hit by a kamikaze during the invasion of Luzon at Lingayen Gulf. After being repaired the California went …
Date:
March 20, 2004
Creator:
Vrana, Leo
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Leo Vrana, March 20, 2004
The National Museum of the Pacific War presents an oral interview with Leonard Vrana. Vrana was born in Moravia, Texas on 21 March 1921 and attended school in a two-room building. He enlisted in the Navy in 1940. After eight weeks of boot training at San Diego, he went to Pearl Harbor assigned aboard the USS California (BB-44). After serving a while in the Motor Launch Division, he became a striker in a fourteen inch gun turret. He describes the working conditions within a turret, the job assignments and procedures involved in firing the guns. He recalls experiences during the Japanese attack on 7 December 1941 during which the ship sustained bomb and torpedo damage. Following the attack, he was assigned to clean up the bodies of his dead shipmates. The ship was taken to Bremerton for repairs during which time he went to the naval gun factory at Annapolis for eight weeks of training. Afterward, he returned to the California. Vrana was aboard ship during the invasions of the Mariana Islands and during the Battle of Surigao Strait. The ship was hit by a kamikaze during the invasion of Luzon at Lingayen Gulf. After being repaired the California went …
Date:
March 20, 2004
Creator:
Vrana, Leo
Object Type:
Sound
System:
The Portal to Texas History
Recent advances of strong-strong beam-beam simulation
In this paper, we report on recent advances in strong-strong beam-beam simulation. Numerical methods used in the calculation of the beam-beam forces are reviewed. A new computational method to solve the Poisson equation on nonuniform grid is presented. This method reduces the computational cost by a half compared with the standard FFT based method on uniform grid. It is also more accurate than the standard method for a colliding beam with low transverse aspect ratio. In applications, we present the study of coherent modes with multi-bunch, multi-collision beam-beam interactions at RHIC. We also present the strong-strong simulation of the luminosity evolution at KEKB with and without finite crossing angle.
Date:
September 15, 2004
Creator:
Qiang, Ji; Furman, Miguel A.; Ryne, Robert D.; Fischer, Wolfram & Ohmi,Kazuhito
Object Type:
Article
System:
The UNT Digital Library
Simulating Time-Dependent Energy Transfer Between Crossed Laser Beams in an Expanding Plasma
A coupled mode system is derived to investigate a three-wave parametric instability leading to energy transfer between co-propagating laser beams crossing in a plasma flow. The model includes beams of finite width refracting in a prescribed transverse plasma flow with spatial and temporal gradients in velocity and density. The resulting paraxial light equations are discretized spatially with a Crank-Nicholson-type scheme, and these algebraic constraints are nonlinearly coupled with ordinary differential equations in time that describe the ion acoustic response. The entire nonlinear differential-algebraic system is solved using an adaptive, backward-differencing method coupled with Newton's method. A numerical study is conducted in two dimensions that compares the intensity gain of the fully time-dependent coupled mode system with the gain computed under the further assumption of a strongly-damped ion acoustic response. The results demonstrate a time-dependent gain suppression when the beam diameter is commensurate with the velocity gradient scale length. The gain suppression is shown to depend on time-dependent beam refraction and is interpreted as a time-dependent frequency shift.
Date:
October 11, 2004
Creator:
Hittinger, J. F.; Dorr, M. R.; Berger, R. L. & Williams, E. A.
Object Type:
Article
System:
The UNT Digital Library
The D0 run II trigger system
The D0 detector at the Fermilab Tevatron was upgraded for Run II. This upgrade included improvements to the trigger system in order to be able to handle the increased Tevatron luminosity and higher bunch crossing rates compared to Run I. The D0 Run II trigger is a highly exible system to select events to be written to tape from an initial interaction rate of about 2.5 MHz. This is done in a three-tier pipelined, buffered system. The first tier (level 1) processes fast detector pick-off signals in a hardware/firmware based system to reduce the event rate to about 1. 5kHz. The second tier (level 2) uses information from level 1 and forms simple Physics objects to reduce the rate to about 850 Hz. The third tier (level 3) uses full detector readout and event reconstruction on a filter farm to reduce the rate to 20-30 Hz. The D0 trigger menu contains a wide variety of triggers. While the emphasis is on triggering on generic lepton and jet final states, there are also trigger terms for specific final state signatures. In this document we describe the D0 trigger system as it was implemented and is currently operating in Run II.
Date:
November 1, 2004
Creator:
Schwienhorst, Reinhard
Object Type:
Article
System:
The UNT Digital Library
The Dallas Journal, Volume 50, 2004
Annual publication containing genealogical information about families in Dallas, Texas and the surrounding area, including family histories, lists of records (births, deaths, registration, etc.), correspondence, and other documentation. Name index begins on page 145.
Date:
June 2004
Creator:
Dallas Genealogical Society
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
INCREASING HEAVY OIL RESERVES IN THE WILMINGTON OIL FIELD THROUGH ADVANCED RESERVOIR CHARACTERIZATION AND THERMAL PRODUCTION TECHNOLOGIES
The overall objective of this project is to increase heavy oil reserves in slope and basin clastic (SBC) reservoirs through the application of advanced reservoir characterization and thermal production technologies. The project involves improving thermal recovery techniques in the Tar Zone of Fault Blocks II-A and V (Tar II-A and Tar V) of the Wilmington Field in Los Angeles County, near Long Beach, California. A primary objective is to transfer technology which can be applied in other heavy oil formations of the Wilmington Field and other SBC reservoirs, including those under waterflood. The thermal recovery operations in the Tar II-A and Tar V have been relatively inefficient because of several producibility problems which are common in SBC reservoirs. Inadequate characterization of the heterogeneous turbidite sands, high permeability thief zones, low gravity oil, and nonuniform distribution of remaining oil have all contributed to poor sweep efficiency, high steam-oil ratios, and early steam breakthrough. Operational problems related to steam breakthrough, high reservoir pressure, and unconsolidated formation sands have caused premature well and downhole equipment failures. In aggregate, these reservoir and operational constraints have resulted in increased operating costs and decreased recoverable reserves. The advanced technologies to be applied include: (1) Develop three-dimensional …
Date:
March 5, 2004
Creator:
Hara, Scott
Object Type:
Report
System:
The UNT Digital Library
Development of On-line Instrumentation and Techniques to Detect and Measure Particulates Quarterly Report
In this quarter, we have finished construction of the first field deployable multi-wavelength PM measurement system. This system is retrofit from the system that we designed and tested in the lab, and by adding light blocking covers and rugged electronic boxes, we are now testing the instrument in our industrial collaborator's site with a turbine power generator. We are collecting data on PM emissions from the engine under different load conditions and fuel/air mixing ratios.
Date:
October 31, 2004
Creator:
Wu, Sheng; Palm, Steve; Tang, Yongchun & Goddard, William A., III
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Robert L. (Bob) Groves, April 30, 2004
The National Museum of the Pacific War presents an oral interview with Bob Grove. He discusses joining the Marine Corp, shipping out to New Zealand before landing on Guadacanal a few days after the invasion started there, then going to Tarawa, getting malaria, returning to Hawaii for more training before going to fight on Saipan, getting hit by shrapnel and shot in the leg. He describes battle conditions, getting caught in storms abroad ships crossing the Pacific, returning to the states after being wounded and attending reunions and being involved in the 2nd Marine Division Association after the war.
Date:
April 30, 2004
Creator:
Groves, Robert L. (Bob)
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Bob Balch, September 19, 2004
The National Museum of the Pacific War presents an interview with Bob Balch. Balch joined the Navy in August of 1943. He completed Radio School in February of 1944. In June he traveled to Melanie Bay, New Guinea. He speaks on shellback initiation crossing the equator. He was assigned to the USS Blue Ridge (AGC-2), where he served as a radioman. In August of 1945, after the war ended, Balch worked at a communication center on Manus, in the Admiralty Islands. He worked in the China occupation group beginning October of 1945. Balch returned to the US and was discharged in February of 1946.
Date:
September 19, 2004
Creator:
Balch, Bob
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Robert L. (Bob) Groves, April 30, 2004
The National Museum of the Pacific War presents an oral interview with Bob Grove. He discusses joining the Marine Corp, shipping out to New Zealand before landing on Guadacanal a few days after the invasion started there, then going to Tarawa, getting malaria, returning to Hawaii for more training before going to fight on Saipan, getting hit by shrapnel and shot in the leg. He describes battle conditions, getting caught in storms abroad ships crossing the Pacific, returning to the states after being wounded and attending reunions and being involved in the 2nd Marine Division Association after the war.
Date:
April 30, 2004
Creator:
Groves, Robert L. (Bob)
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Bob Balch, September 19, 2004
The National Museum of the Pacific War presents an interview with Bob Balch. Balch joined the Navy in August of 1943. He completed Radio School in February of 1944. In June he traveled to Melanie Bay, New Guinea. He speaks on shellback initiation crossing the equator. He was assigned to the USS Blue Ridge (AGC-2), where he served as a radioman. In August of 1945, after the war ended, Balch worked at a communication center on Manus, in the Admiralty Islands. He worked in the China occupation group beginning October of 1945. Balch returned to the US and was discharged in February of 1946.
Date:
September 19, 2004
Creator:
Balch, Bob
Object Type:
Sound
System:
The Portal to Texas History
2002 Small Mammal Inventory at Lawrence Livermore National Laboratory, Site 300
To assist the University of California in obtaining biological assessment information for the ''2004 Environmental Impact Statement for Continued Operation of Lawrence Livermore National Laboratory (LLNL)'', Jones & Stokes conducted an inventory of small mammals in six major vegetation communities at Site 300. These communities were annual grassland, native grassland, oak savanna, riparian corridor, coastal scrub, and seep/spring wetlands. The principal objective of this study was to assess the diversity and abundance of small mammal species in these communities, as well as the current status of any special-status small mammal species found in these communities. Surveys in the native grassland community were conducted before and after a controlled fire management burn of the grasslands to qualitatively evaluate any potential effects of fire on small mammals in the area.
Date:
November 16, 2004
Creator:
West, E & Woollett, J
Object Type:
Report
System:
The UNT Digital Library
LIN, a Medicago truncatula Gene Required for Nodule Differentiation and Persistence of Rhizobial Infections
Article on LIN, a Medicago truncatula gene required for nodule differentiation and persistence of rhizobial infections.
Date:
November 2004
Creator:
Kuppusamy, Kavitha T.; Endre, Gabriella; Prabhu, Radhika; Penmetsa, R. Varma; Veereshlingam, Harita; Cook, Douglas R. et al.
Object Type:
Article
System:
The UNT Digital Library
e+e- pair production from 10 GeV to 10 ZeV
None
Date:
February 16, 2004
Creator:
Klein, Spencer R.
Object Type:
Article
System:
The UNT Digital Library
Characterization of Peeling-Ballooning Stability Limits on the Pedestal
This report describes the Characterization of Peeling-Ballooning Stability Limits on the Pedestal.
Date:
March 1, 2004
Creator:
Snyder,Pb; Wilson, Hr; Osborne, Th & Leonard, Aw
Object Type:
Article
System:
The UNT Digital Library
Optimized Non-Orthogonal Localized Orbitals for Electronic Structure Calculations: Improved Linear Scaling Quantum Monte Carlo
None
Date:
July 1, 2004
Creator:
Reboredo, F A & Williamson, A J
Object Type:
Article
System:
The UNT Digital Library
Near-infrared Adaptive Optics Imaging of the Satellites and Individual Rings of Uranus from the W.M. Keck Observatory
None
Date:
January 21, 2004
Creator:
Gibbard, S G; de Pater, I & Hammel, H B
Object Type:
Article
System:
The UNT Digital Library
LLNL Experimental Results on OMEGA: FY'04
Lawrence Livermore National Laboratory (LLNL) conducted approximately 360 shots on Omega in FY04. Approximately half of the shots were devoted to ICF-relevant experiments. These are summarized as follows:
Date:
September 8, 2004
Creator:
Turner, R E
Object Type:
Report
System:
The UNT Digital Library
Design, Implementation and Optimization of a Parallel Monte Carlo Particle Transport Code
None
Date:
September 6, 2004
Creator:
Procassini, R J; Taylor, J M; Greenman, G M; O'Brien, M J & Cullen, D E
Object Type:
Article
System:
The UNT Digital Library