The south-central Illinois earthquake of November 9, 1968: Macroseismic studies

Autor:	Theron J. Bennett, David W. Gordon, Albert M. Rogers, Robert B. Herrmann
Rok vydání:	1970
Předmět:	geography Geophysics geography.geographical_feature_category Geochemistry and Petrology Landform Seismic zone Post office Clockwise Glacial lake Seismology Geology Geological structure
Zdroj:	Bulletin of the Seismological Society of America. 60:953-971
ISSN:	1943-3573 0037-1106
DOI:	10.1785/bssa0600030953
Popis:	The November 9, 1968 earthquake in south-central Illinois occurred in the New Madrid zone, a seismic zone associated with northeast-trending geological structure. Landforms in the epicentral area consist of nearly flat, glacial lake plains surrounding low, loess-covered hills. An extensive post office canvass and a field inspection of the epicentral area indicate that the strongest shaking (MM VII) took place in the Wabash and Ohio Valleys and adjacent lowlands of south-central Illinois. Characteristic damage included broken chimneys, fallen plaster, and occasional instances of collapsed parapets and overthrown tombstones. Observed rotations of tombstones and other objects in the epicentral area suggest a quadrant distribution of clockwise and counter-clockwise rotations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dd4a277da26213ab5a7a31aba89ee5e1 https://doi.org/10.1785/bssa0600030953 Zobrazit plný text záznamu