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United States Earthquakes 1939

Description: From Introduction: "This publication is a summary of earthquake activity in the United States and the regions under its jurisdiction for the calendar year 1939. A history of the more important shocks of the country appears in Serial 609 of the Bureau, "Earthquake History of the United States: Part I-"Continental United States (Exclusive of California and Western Nevada) and Alaska," and Part II. -"Stronger Earthquakes of California and Western Nevada, Revised (1941) edition."
Date: unknown
Partner: UNT Libraries Government Documents Department

Recommendations for Shape of Earthquake Response Spectra

Description: From summary: The major objectives of the studies described in this report were to analyse and evaluate a number of significant earthquake records and to utilize the results to develop "standardized" design spectrum shapes to be used in the seismic design of nuclear power plant facilities.
Date: February 1973
Creator: Blume, John A.; Sharpe, Roland L. & Dalal, Jagat S.
Partner: UNT Libraries Government Documents Department

Acoustic Emission Precursors of M6.0 2004 Parkfield and M7.0 1989Loma Prieta Earthquakes

Description: Two recent strike-slip earthquakes on the San Andreas Fault(SAF) in California, the M6.0 2004 Parkfield and M7.0 1989 Loma Prietaevents, revealed peaks in the acoustic emission (AE) activity in thesurrounding crust several months prior to the main events. Earthquakesdirectly within the SAF zone were intentionally excluded from theanalysis. The observed increase in AE is assumed to be a signature of theincreasing stress level in the surrounding crust, while the peak andsubsequent decrease in AE starting several months prior to the mainevents is attributed to damage-induced softening processes as discussedherein. Further, distinctive zones of low seismic activity surroundingthe epicentral regions in the pre-event time period are present for thetwo studied events. Both AE increases in the crust surrounding apotential future event and the development of a low-seismicity epicentralzone can be regarded as promising precursory information that could helpsignal the arrival of large earthquakes.
Date: February 1, 2005
Creator: Korneev, Valeri
Partner: UNT Libraries Government Documents Department

Reply to the Comment "Intercluster correlation in Seismicity" by Helmstetter and Sornette

Description: This paper is a reply to the comment by Helmstetter and Sornette titled "Intercluster correlation in Seismicity" which addresses an important point in a paper written by the authors that needs to be clarified.
Date: September 15, 2003
Creator: Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.
Partner: UNT College of Arts and Sciences

The U.S. Tsunami Program: A Brief Overview

Description: The National Oceanic and Atmospheric Administration's (NOAA's) National Weather Service (NWS) manages two tsunami warning centers that monitor, detect, and issue warnings for tsunamis. This report discusses these centers, which monitor and evaluate data from seismic networks and determine if a tsunami is likely based on the location, magnitude, and depth of an earthquake.
Date: March 18, 2015
Creator: Folger, Peter
Partner: UNT Libraries Government Documents Department

Power-Law Time Distribution of Large Earthquakes

Description: Article discussing power-law time distribution of large earthquakes and a study of the statistical properties of time distribution of seismicity in California by means of diffusion entropy.
Date: May 2003
Creator: Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.
Partner: UNT College of Arts and Sciences

U.S. Tsunami Programs: A Brief Overview

Description: This report discusses U.S. warning systems and related disaster management programs in place to prepare for and react to tsunamis. This issue is discussed in relation to the March 2011 earthquake and tsunami that devastated Japan.
Date: March 18, 2011
Creator: Folger, Peter
Partner: UNT Libraries Government Documents Department

U.S. Tsunami Programs: A Brief Overview

Description: This report discusses U.S. warning systems and related disaster management programs in place to prepare for and react to tsunamis. This issue is discussed in relation to the March 2011 earthquake and tsunami that devastated Japan.
Date: March 15, 2011
Creator: Folger, Peter
Partner: UNT Libraries Government Documents Department

Studies Related to the Charleston, South Carolina, Earthquake of 1886: a Preliminary Report

Description: From abstract: The seismic history of the southeastern United States is dominated by the 1886 earthquake near Charleston, S.C. An understanding of the specific source and the uniqueness of the neotectonic setting of this large earthquake is essential in order to properly assess seismic hazards in the southeastern United States. Such knowledge will also contribute to the fundamental understanding of intraplate earthquakes and will aid indirectly in deciphering the evolution of Atlantic-type continental margins. The 15 chapters in this volume report on the first stage of an ongoing multidisciplinary study of the Charleston earthquake of 1886.
Date: 1977
Creator: Rankin, Douglas W.
Partner: UNT Libraries Government Documents Department

INL Seismic Monitoring Annual Report: January 1, 2011 - December 31, 2011

Description: During 2011, the Idaho National Laboratory Seismic Monitoring Program evaluated 21,928 independent triggers that included earthquakes from around the world, the western United States, and local region of the Snake River Plain. Seismologists located 2,063 earthquakes and man-made blasts within and near the 161-km (or 100-mile) radius of the Idaho National Laboratory. Of these events, 16 were small-to-moderate size earthquakes ranging in magnitude (M) from 3.0 to 4.4. Within the 161-km radius, the majority of 941 earthquakes (M < 4.4) occurred in the active regions of the Basin and Range Province with only six microearthquakes occurring in the Snake River Plain. In the northern and southeastern Basin and Range, eight earthquake swarms occurred and included over 325 events. Five of the Snake River Plain earthquakes were located within and near the northern and southern ends of the Great Rift volcanic rift zone. All have anomalously deep focal depths (16 to 38 km) and waveforms indicative of fluid movement at mid- and lower-crustal levels and are a continuation of activity observed at Craters of the Moon National Monument since 2007. Since 1972, the Idaho National Laboratory has recorded 55 small-magnitude microearthquakes (M = 2.2) within the eastern Snake River Plain and 25 deep microearthquakes (M = 2.3) in the vicinity of Craters of the Moon National Monument.
Date: December 1, 2012
Creator: Payne, S. J.; Hodges, J. M.; Berg, R. G. & Bruhn, D. F.
Partner: UNT Libraries Government Documents Department

Japan's 2011 Earthquake and Tsunami: Economic Effects and Implications for the United States

Description: This report presents data regarding the persons killed, missing, and buildings totally or partially damaged after the disaster in Japan. The report discusses the economic impact the disaster had on Japan and the impact on U.S. imports from and exports to Japan.
Date: April 20, 2011
Creator: Nanto, Dick K.; Cooper, William H.; Donnelly, J. Michael & Johnson, Renée
Partner: UNT Libraries Government Documents Department

Japan’s 2011 Earthquake and Tsunami: Economic Effects and Implications for the United States

Description: This report presents data regarding the persons killed, missing, and buildings totally or partially damaged after the disaster in Japan. The report discusses the economic impact the disaster had on Japan and the impact on U.S. imports from and exports to Japan.
Date: April 6, 2011
Creator: Nanto, Dick K.; Cooper, William H.; Donnelly, J. Michael & Johnson, Renee
Partner: UNT Libraries Government Documents Department

First Quarter Hanford Seismic Report for Fiscal Year 2001

Description: Hanford Seismic Monitoring provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network (HSN) for the U.S. Department of Energy and its contractors. Hanford Seismic Monitoring also locates and identifies sources of seismic activity and monitors changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, Natural Phenomena Hazards assessments, and engineering design and construction. In addition, the seismic monitoring organization works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The HSN and the Eastern Washington Regional Network (EWRN) consist of 41 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Monitoring staff. For the HSN, there were 477 triggers during the first quarter of fiscal year (FY) 2001 on the data acquisition system. Of these triggers, 176 were earthquakes. Forty-five earthquakes were located in the HSN area; 1 earthquake occurred in the Columbia River Basalt Group, 43 were earthquakes in the pre-basalt sediments, and 1 was earthquakes in the crystalline basement. Geographically, 44 earthquakes occurred in swarm areas, 1 earthquake was on a major structure, and no earthquakes were classified as random occurrences. The Horse Heaven Hills earthquake swarm area recorded all but one event during the first quarter of FY 2001. The peak of the activity occurred over December 12th, 13th, and 14th when 35 events occurred. No earthquakes triggered the Hanford Strong Motion Accelerometers during the first quarter of FY 2001.
Date: February 27, 2001
Creator: Hartshorn, Donald C.; Reidel, Stephen P.; Rohay, Alan C. & Valenta, Michelle M.
Partner: UNT Libraries Government Documents Department

Earthquakes: Risk, Monitoring, Notification, and Research

Description: This report describes estimates of earthquake hazards and risk in the United States; the current federal programs that support earthquake monitoring and that provide notification after a seismic event; and the programs that support mitigation and research aimed at reducing U.S. vulnerability to earthquakes.
Date: January 16, 2008
Creator: Folger, Peter
Partner: UNT Libraries Government Documents Department

INL Seismic Monitoring Annual Report: January 1, 2004 - December 31, 2004

Description: During 2004, INL analyzed more than 2,300 earthquakes. There were 487 earthquakes with magnitudes up to 4.0 located within the 161-km (100-mile) radius of the Idaho National Laboratory (INL). Seventeen small to moderate earthquakes of magnitudes from 3.0 to 5.0 occurred with the region outside the 161-km radius. Earthquakes activity occurred in areas that have experienced seismic activity in the past, the Basin and Range northwest of the INL, southwestern Montana, Yellowstone Park, Wyoming, Jackson, Wyoming, and southeastern Idaho. One earthquake was located northeast of Idaho Falls, Idaho within the eastern Snake River Plain (ESRP). No earthquakes were located within the INL boundaries. Earthquakes were not recorded by strong-motion accelerographs located in INL facilities.
Date: September 1, 2005
Creator: Payne, S.; Holland, A.; Hodges, J. & Berg, R.
Partner: UNT Libraries Government Documents Department

INL Seismic Monitoring Annual Report: January 1, 2007 - December 31, 2007

Description: During 2007, the INL Seismic Monitoring Program evaluated 2,515 earthquakes from around the world, the western United States, and local region of the eastern Snake River Plain. 671 earthquakes and man-made blasts occurred within the local region outside and within a 161-km (or 100-mile) radius of INL. Of these events, eleven were small to moderate size earthquakes ranging in magnitude from 3.0 to 4.8. 341 earthquakes occurred within the 161-km radius of INL and the majority of these earthquakes were located in active regions of the Basin and Range Province that surrounds the ESRP. Three earthquakes were located within the ESRP at Craters of the Moon National Monument. The earthquakes were of Mc 0.9, 1.4, and 1.8. Since 1972, INL has recorded 36 small-magnitude microearthquakes (M < 2.0) within the ESRP.
Date: September 1, 2008
Creator: Payne, S. J.; Carpenter, N. S.; Hodges, J. M. & Berg, R. G.
Partner: UNT Libraries Government Documents Department

INL Seismic Monitoring Annual Report: January 1, 2006 - December 31, 2006

Description: During 2006, the Idaho National Laboratory (INL) recorded 1998 independent triggers from earthquakes both within the region and from around the world. Fifteen small to moderate size earthquakes ranging in magnitude from 3.0 to 4.5 occurred within and outside the 161-km (100-mile) radius of INL. There were 357 earthquakes with magnitudes up to 4.5 that occurred within the 161-km radius of the INL. The majority of earthquakes occurred in the Basin and Range Province surrounding the eastern Snake River Plain (ESRP). The largest of these earthquakes had a body-wave magnitude (mb) 4.5 and occurred on February 5, 2006. It was located northeast of Spencer, Idaho near the east-west trending Centennial fault along the Idaho-Montana border. The earthquake did not trigger SMAs located within INL buildings. Three earthquakes occurred within the ESRP, two of which occurred within the INL boundaries. One earthquake of coda magnitude (Mc) 1.7 occurred on October 18, 2006 and was located southeast of Pocatello, Idaho. The two earthquakes within the INL boundaries included the local magnitude (ML) 2.0 on July 31, 2006 located near the southern termination of the Lemhi fault and the Mc 0.4 on August 6, 2006 located near the center of INL. The ML 2.0 earthquake was well recorded by most of the INL seismic stations and had a focal depth of 8.98 km. First motions were used to compute a focal mechanism, which indicated normal faulting along one of two possible fault planes that may strike N76ºW and dip 70±3ºSW or strike N55ºW and dip 20±13ºNE. Slip along a normal fault that strikes N76ºW and dips 70±3ºSW is consistent with slip along a possible segment of the NW-trending Lemhi normal fault.
Date: September 1, 2007
Creator: Payne, S. J.; Carpenter, N. S.; Hodges, J. M. & Berg, R. G.
Partner: UNT Libraries Government Documents Department

INL Seismic Monitoring Annual Report: January 1, 2008 – December 31, 2008

Description: During 2008, the INL Seismic Monitoring Program evaluated 7,284 earthquakes from around the world, the western United States, and local region of the eastern Snake River Plain. 2,396 earthquakes and man-made blasts were evaluated within the local region outside and within a 161-km (or 100-mile) radius of INL. Of these events, 25 were small to moderate size earthquakes ranging in magnitude from 3.0 to 3.9. 823 earthquakes occurred within the 161-km radius of INL and over 300 events were associated with eight different earthquake swarms which were located in active regions of the Basin and Range Province that surrounds the eastern Snake River Plain. Eight microearthquakes in 2008 of magnitude (M) 2.0 and less were located within the eastern Snake River Plain, seven at or near the Craters of the Moon National Monument and one within the INL boundary. Further analyses of the anomalously deep focal depths (15 to 42 km) and different waveform characteristics of all Craters of the Moon National Monument events (1999-2008) suggest association with magmatic processes. From 1972 to 2008, INL located 36 other small-magnitude microearthquakes (M < 2.0) at depths (< 11 km) within the eastern Snake River Plain and attributes these events to regional tectonic tensional stresses.
Date: September 1, 2009
Creator: Payne, S. J.; Carpenter, N. S.; Hodges, J. M. & Berg, R. G.
Partner: UNT Libraries Government Documents Department

The Japanese Nuclear Incident: Technical Aspects

Description: The Japanese earthquake and tsunami of March 2011 caused extensive damage to the Fukushima Daiichi Nuclear Power Plant (NPP). This damage has released some radioactive materials, and there are widespread fears about the health effects of current and possible future releases. These fears, and public concern about radiation in general, have attracted the world’s attention. This report presents scientific and technical aspects of these issues in order to provide a basis for understanding the risks associated with this event.
Date: March 31, 2011
Creator: Medalia, Jonathan
Partner: UNT Libraries Government Documents Department