Earthquake Hazard in Pennsylvania PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Earthquake Hazard in Pennsylvania PDF full book. Access full book title Earthquake Hazard in Pennsylvania by Charles Kirby Scharnberger. Download full books in PDF and EPUB format.
Author: Charles Kirby Scharnberger
Publisher:
ISBN:
Category : Earthquake hazard analysis
Languages : en
Pages : 20
Get Book Here
Book Description
Author: Charles Kirby Scharnberger
Publisher:
ISBN:
Category : Earthquake hazard analysis
Languages : en
Pages : 20
Get Book Here
Book Description
Author: Charles K. Scharnberger
Publisher:
ISBN: 9781437904086
Category :
Languages : en
Pages : 14
Get Book Here
Book Description
Compared to other states, especially California and Alaska, PA is relatively free of earthquake activity. Nevertheless, earthquakes do occur in PA, and PA may be subject to the effects of earthquakes that have epicenters located outside our borders. Contents: What is an Earthquake?; Earthquakes and Plate Boundaries; Earthquake Magnitude and Intensity; Earthquake Hazard and Earthquake Risk; Hazard of Earthquakes Having Epicenters Outside PA: New Madrid, MO, the St. Lawrence region, Charleston, SC, and other East Coast areas; Hazard of Earthquakes Having Epicenters in PA: Seismicity in PA, Magnitude-frequency relationship for the Lancaster seismic zone, and a probabilistic approach; Conclusion; and References. Illus.
Author: Pennsylvania. Bureau of Topographic and Geologic Survey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 24
Get Book Here
Book Description
Author: Edward J. Hughes
Publisher:
ISBN:
Category : Earthquake hazard analysis
Languages : en
Pages : 122
Get Book Here
Book Description
Author: John P. Wilshusen
Publisher:
ISBN:
Category : Earth movements
Languages : en
Pages : 72
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 224
Get Book Here
Book Description
Author: Kyle Homman
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
In this thesis, data from several seismic networks have been used to develop a catalog of seismic events in Pennsylvania from February 2013 to December 2014. Using the Antelope Environmental Data Collection Software Suite, P-wave arrivals were picked using 1-5 Hz bandpass filtered vertical component seismograms. Initial hypocenters were determined using the IASP91 velocity model. P-wave arrival times were subsequently used with the HYPOELLIPSE code (Lahr, 1989) and a velocity model developed for Pennsylvania to relocate the events. The catalog consists of 1355 events in Pennsylvania and is complete to a M_L of 2.0. Magnitudes were computed using Richter's (1935) method for determining local magnitude (M_L). Most events occurred between 12:00 and 22:00 UTC during week days. The Gutenberg-Richter plot yielded a b-value of 2.63 for the catalog. Events were classified based on criteria used by the United States Geological Survey and others for determining mining-related seismicity. The results of event classification showed that the catalog predominantly consists of mining-related seismicity. Through the classification process, 11 of the 1355 events in the catalog were found to be unrelated to mining activity. P-wave and S-wave arrival times for these events were repicked using 1-10 Hz bandpass filtered data and relocated using the Pennsylvania velocity model and HYPOELLIPSE. Event locations and origin times were examined to determine if there was a spatial and temporal correlation with natural gas extraction activity. No correlation was found and therefore there appears to be little, if any, evidence for seismic events in the catalog caused by hydraulic fracturing or wastewater injection. The 11 non-mining related events all occurred in areas of known faults. A cross correlation match and locate technique was applied to a cluster of events near Williamsport, PA using a template event that occurred on September 25, 2013. Upon locating the cross correlation detections relative to the template event, and then moving the locations to the centroid of the cluster, it was determined that the cluster is a result of mining-activity at the Thomas Coal Mine. The findings of this study are important for future monitoring of seismicity in Pennsylvania. The natural gas production region and the bituminous coal region in the Commonwealth overlap spatially. Accurate event locations, magnitude estimates, and origin times are required to discriminate between mining events and possible seismicity induced by natural gas production. To obtain that information, a large, permanent seismic network is required. The amount of mining-related seismicity generated from both coal and industrial mineral mines also creates challenges for detecting and locating small tectonic events in both known and possibly unknown areas of earthquake activity.
Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 90
Get Book Here
Book Description
A seismic zoning was developed for eastern Pennsylvania and adjacent states based on the geology and the historic seismicity. Floating earthquakes were assigned to those zones in the absence of identifiable active faults. At the Prompton and Francis E. Walter Damsites, motions were far field, Modified Mercalli VI, acceleration 0.12g, velocity 7 cm/sec, and 3 sec bracketed duration> or = 0.05g. Accelerograms and response spectra appropriate to these parameters were selected.
Author: Gladees Abdypoor
Publisher:
ISBN:
Category : Earthquakes
Languages : en
Pages : 742
Get Book Here
Book Description
Author: J. Peter Wilshusen
Publisher:
ISBN: 9780788174155
Category :
Languages : en
Pages : 56
Get Book Here
Book Description
Describes the most frequent & widespread natural geological hazards in Pennsylvania: landslides & sinkholes & other solution features. Earthquakes have not been of sufficient intensity in Pennsylvania to cause much concern but they are briefly discussed here. Descriptions of these hazards & an awareness of their distribution will help planners, local government officials, developers, & private citizens to recognize & deal with them in a timely & effective manner. Maps & photos.
