2-D Path Corrections for Local and Regional Coda Waves: A Test of Transportability (open access)

2-D Path Corrections for Local and Regional Coda Waves: A Test of Transportability

Reliable estimates of the seismic source spectrum are necessary for accurate magnitude, yield, and energy estimation. In particular, how seismic radiated energy scales with increasing earthquake size has been the focus of recent debate within the community and has direct implications on earthquake source physics studies as well as hazard mitigation. The 1-D coda methodology of Mayeda et al. [2003] has provided the lowest variance estimate of the source spectrum when compared against traditional approaches that use direct S-waves, thus making it ideal for networks that have sparse station distribution. The 1-D coda methodology has been mostly confined to regions of approximately uniform complexity. For larger, more geophysically complicated regions, 2-D path corrections may be required. We will compare performance of 1-D versus 2-D path corrections in a variety of regions. First, the complicated tectonics of the northern California region coupled with high quality broadband seismic data provides for an ideal ''apples-to-apples'' test of 1-D and 2-D path assumptions on direct waves and their coda. Next, we will compare results for the Italian Alps using high frequency data from the University of Genoa. For Northern California, we used the same station and event distribution and compared 1-D and 2-D path …
Date: July 13, 2005
Creator: Mayeda, K M; Malagnini, L; Phillips, W S; Walter, W R; Dreger, D S & Morasca, P
Object Type: Article
System: The UNT Digital Library
2 Letters from concerned citizens in response to the recommendation regarding the Defense Office of Hearings and Appeals in Fort Meade (open access)

2 Letters from concerned citizens in response to the recommendation regarding the Defense Office of Hearings and Appeals in Fort Meade

Community Correspondence - 2 Letters from concerned citizens in response to the recommendation regarding the Defense Office of Hearings and Appeals in Fort Meade
Date: July 30, 2005
Creator: unknown
Object Type: Legal Document
System: The UNT Digital Library
2 letters from George H. Newman in response to the recommendations regarding Eglin Air Force Base (open access)

2 letters from George H. Newman in response to the recommendations regarding Eglin Air Force Base

Community Correspondence - 2 letters from George H. Newman in response to the recommendations regarding Eglin Air Force Base
Date: July 30, 2005
Creator: Newman, George H. Major
Object Type: Letter
System: The UNT Digital Library
An 8-Element Fast-Neutron Double-Scatter Directional Detector. (open access)

An 8-Element Fast-Neutron Double-Scatter Directional Detector.

We have constructed a fast-neutron double-scatter spectrometer that efficiently measures the neutron spectrum and direction of a spontaneous fission source. The device consists of two planes of organic scintillators, each having an area of 125 cm{sup 2}, efficiently coupled to photomultipliers. The four scintillators in the front plane are 2 cm thick, giving almost 25% probability of detecting an incident fission-spectrum neutron at 2 MeV by proton recoil and subsequent ionization. The back plane contains four 5-cm-thick scintillators which give a 40% probability of detecting a scattered fast neutron. A recordable double-scatter event occurs when a neutron is detected in both a front plane detector and a back plane detector within an interval of 500 nanoseconds. Each double-scatter event is analyzed to determine the energy deposited in the front plane, the time of flight between detectors, and the energy deposited in the back plane. The scattering angle of each incident neutron is calculated from the ratio of the energy deposited in the first detector to the kinetic energy of the scattered neutron.
Date: July 31, 2005
Creator: Vanier, P. E. & Forman, L.
Object Type: Article
System: The UNT Digital Library
20 Letters from concerned citizens in response to the recommendation regarding Wright Patterson Air Force Base (open access)

20 Letters from concerned citizens in response to the recommendation regarding Wright Patterson Air Force Base

Community Correspondence - 20 Letters from concerned citizens in response to the recommendation regarding Wright Patterson Air Force Base
Date: July 30, 2005
Creator: unknown
Object Type: Letter
System: The UNT Digital Library
25 Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base (open access)

25 Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base

Community Correspondence - 25 Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date: July 30, 2005
Creator: unknown
Object Type: Letter
System: The UNT Digital Library
50 Individual Letters from concerned citizens regarding the closing of the Cannon AFB (open access)

50 Individual Letters from concerned citizens regarding the closing of the Cannon AFB

Community Correspondence - 50 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Date: July 29, 2005
Creator: unknown
Object Type: Letter
System: The UNT Digital Library
61 Individual Letters from concerned citizens regarding the closing of the Pittsburgh 911th Airlift Wing (open access)

61 Individual Letters from concerned citizens regarding the closing of the Pittsburgh 911th Airlift Wing

Community Correspondence - 61 Individual Letters from concerned citizens regarding the closing of the Pittsburgh 911th Airlift Wing
Date: July 29, 2005
Creator: unknown
Object Type: Letter
System: The UNT Digital Library
71 Letters to the Commission from residents in support of Cannon AFB (open access)

71 Letters to the Commission from residents in support of Cannon AFB

Community Correspondence – 71 Letters to the Commission from residents in support of Cannon AFB
Date: July 1, 2005
Creator: unknown
Object Type: Letter
System: The UNT Digital Library
103-06-A -RH8- Regional Hearing - 28 June 05 Charlotte Military Enhancement Committee (open access)

103-06-A -RH8- Regional Hearing - 28 June 05 Charlotte Military Enhancement Committee

Base input: MEC Military Enhancement Committee Beaufort County, South Carolina
Date: July 11, 2005
Creator: unknown
Object Type: Legal Document
System: The UNT Digital Library
103-06A - A1 - DOD Input - Army - Fort Monroe - VA (open access)

103-06A - A1 - DOD Input - Army - Fort Monroe - VA

DOD Input - Army - Fort Monroe - VA - Includes: Memorandum for Army in reference to the issues/concerns/questions on Fort Monroe and slides from the Ft. Monroe base visit
Date: July 1, 2005
Creator: United States. Department of Defense.
Object Type: Text
System: The UNT Digital Library
103-06A-A20 - Base Input - Army - Red River Army Depot - Red River Army Depot informational briefing (open access)

103-06A-A20 - Base Input - Army - Red River Army Depot - Red River Army Depot informational briefing

Red River Army Depot informational briefing given by depot commander COL Gary Carney and Munitions Center Director Harrell Hignight on 06/21/05.
Date: July 1, 2005
Creator: unknown
Object Type: Text
System: The UNT Digital Library
103-06A - A20 - Base Input - Army - Red River Army Depot - TX (open access)

103-06A - A20 - Base Input - Army - Red River Army Depot - TX

Base Input - Army - Red River Army Depot - TX - Includes: PowerPoint Presentation Tab 1 is the presentation with data up to 053105. Tab 2 is the presentation with data up to 063005
Date: July 1, 2005
Creator: United States. Department of Defense.
Object Type: Text
System: The UNT Digital Library
103-06A - A20 - Base Input - Army - Red River Army Depot TX - Red River Defense Complex Community Briefings (open access)

103-06A - A20 - Base Input - Army - Red River Army Depot TX - Red River Defense Complex Community Briefings

Red River Defense Complex Community Briefings presented to Commissioners Hill and Turner on 06/21/05.
Date: July 1, 2005
Creator: unknown
Object Type: Text
System: The UNT Digital Library
103-06A - A20 - BRAC Commission 06/21/05 Base Visit Book for Red River Army Depot (open access)

103-06A - A20 - BRAC Commission 06/21/05 Base Visit Book for Red River Army Depot

BRAC Commission 06/21/05 Base Visit Book for Red River Army Depot.
Date: July 1, 2005
Creator: unknown
Object Type: Book
System: The UNT Digital Library
103-06A - A6 - Base Input - Army - Rock Island Arsenal - IL (open access)

103-06A - A6 - Base Input - Army - Rock Island Arsenal - IL

Base Input - Army - Rock Island Arsenal - IL - Includes: Itinerary for the visit of Mr. Samuel K. Skinner; List of attendees; PowerPoint presentation of BRAC Recommendations and Possible Changes prepared by Mr. Alan Wilson, Garrison Manager; and Rock Island Arsenal brochure.
Date: July 1, 2005
Creator: United States. Defense Base Closure and Realignment Commission.
Object Type: Text
System: The UNT Digital Library
103-06A -A6 - Base Input Army - Rock Island Arsenal - IL (open access)

103-06A -A6 - Base Input Army - Rock Island Arsenal - IL

Base Input - Army - Rock Island Arsenal - IL - Includes: PowerPoint Presentation from John Guzzonato Director, DFAS Rock Island
Date: July 1, 2005
Creator: United States. Department of Defense.
Object Type: Text
System: The UNT Digital Library
103-06A - A6 - Base Input - Army - Rock Island Arsenal IL - Mr. Samuel K. Skinner - US Army Garrison - Rock Island Arsenal - Installation Overview Briefing (open access)

103-06A - A6 - Base Input - Army - Rock Island Arsenal IL - Mr. Samuel K. Skinner - US Army Garrison - Rock Island Arsenal - Installation Overview Briefing

Base Input - Army - Rock Island Arsenal IL - Mr. Samuel K. Skinner - US Army Garrison - Rock Island Arsenal - Installation Overview Briefing - PowerPoint Presentation made by Mr. Alan Wilson, Garrison Manager
Date: July 1, 2005
Creator: unknown
Object Type: Text
System: The UNT Digital Library
103-06A-AF20 - Base Input - Air Force - Elmendorf Air Force Base/Kulis Air Guard Station/Eielson Air Force Base - AK (open access)

103-06A-AF20 - Base Input - Air Force - Elmendorf Air Force Base/Kulis Air Guard Station/Eielson Air Force Base - AK

Base Input - Air Force - Elmendorf Air Force Base/Kulis Air Guard Station/Eielson Air Force Base - AK - Mr. Small BRAC Commission Visit - Includes: Powerpoint presentation from Lt. Col Pat McCrea; Eielson Air Force Base ALASKA Home of the Iceman Team Powerpoint Presentation; Welcome to the 176th Wing Kulis Air National Guard Base Alaska Report; biographies; Welcome to the 176th Wing Presentation
Date: July 1, 2005
Creator: United States. Defense Base Closure and Realignment Commission.
Object Type: Text
System: The UNT Digital Library
103-06A - AF6 Base Input - Otis Air Force Base-Massachusetts (open access)

103-06A - AF6 Base Input - Otis Air Force Base-Massachusetts

Base Input: 102nd Fighter Wing, Cape Cod MA- Otis Air National Guard
Date: July 11, 2005
Creator: unknown
Object Type: Text
System: The UNT Digital Library
103-06A - AF6 Community Input  State of Connecticut - Economic Impact Analysis (open access)

103-06A - AF6 Community Input State of Connecticut - Economic Impact Analysis

The Contribution of the Groton Naval Sub Base and the Electric Boat Company to the Economies of Connecticut and Southeastern Connecticut - State of Connecticut
Date: July 11, 2005
Creator: unknown
Object Type: Text
System: The UNT Digital Library
103-06A - General - Community Input - Air Force - Western Pennsylvania (open access)

103-06A - General - Community Input - Air Force - Western Pennsylvania

Community Input - Air Force - Western Pennsylvania - Includes Point Paper, Specific BRAC Impact Concerns
Date: July 1, 2005
Creator: United States. Defense Base Closure and Realignment Commission.
Object Type: Text
System: The UNT Digital Library
103-06A - NMC1 - Base Input - Navy - Naval Surface Warfare Center Dahlgreen - VA (open access)

103-06A - NMC1 - Base Input - Navy - Naval Surface Warfare Center Dahlgreen - VA

Base Input - Navy - Naval Surface Warfare Center Dahlgreen - VA Includes: note from Charles Battaglia; List of attendees at the base visit
Date: July 1, 2005
Creator: United States. Defense Base Closure and Realignment Commission.
Object Type: Text
System: The UNT Digital Library
103-06A-RH11 - State Input - VA - Regional Hearing 07-7-05 - National Capital Area (open access)

103-06A-RH11 - State Input - VA - Regional Hearing 07-7-05 - National Capital Area

While we in Congress retain a right to review and reject the final recommendations in total, the commission is charged with reviewing and amending each recommendation to ensure the use of correct data, an accurate and substantiated assessment of cost savings, and---most importantly recommendations that advance the tenets of "military value" as clearly prescribed in law.
Date: July 19, 2005
Creator: United States. Defense Base Closure and Realignment Commission.
Object Type: Legal Document
System: The UNT Digital Library