STATE-OF-THE ART FOR ASSESSING EARTHQUAKE HAZARDS IN THE UNITED STATES. REPORT 21: SEISMIC SOURCE ZONES OF THE EASTERN UNITED STATES AND SEISMIC ZONING OF THE ATLANTIC SEABOARD AND APPALACHIAN REGIONS

Seismic and geologic data indicate that the eastern United States has particular seismic source zones which can be delineated in terms of maximum expected epicentral intensity. Historic and recorded seismicities demonstrate that significant earthquakes arise only from specific source zones. These zones are associated with major fracture zones that trend northwest, an important exception being a northeast-trending zone extending from the central Mississippi valley to the gulf of St lawrence. Many fracture zones are related to those cutting the gulf and North Atlantic oceanic basins, and their present development is related to the formation of these basins. Sags or embayments developed over their fracture zones during the late Cretaceous where they intersected the Cretaceous coast. Earthquake zonation is accomplished by estimating the maximum credible earthquake for each source zone. (Author/TRRL)

• Corporate Authors:

  U.S. Army Waterways Experiment Station

  3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199

  LABORATORY

  ,    
• Authors:
  • Barosh, P J
• Publication Date: 1986-8

Language

• English

Media Info

• Pagination: 302 p.

Subject/Index Terms

• TRT Terms: Classification; Forecasting; Geology; Ground settlement; Hazards; Methodology; Seismicity
• Geographic Terms: United States
• ITRD Terms: 8513: Classification; 132: Forecast; 4053: Geology; 9102: Method; 9150: Risk; 5731: Seismic; 5792: Settlement; 8122: USA
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00499354
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM