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B. Glen Reagor

Publications and source records attributed to B. Glen Reagor.

11 recordsLinked to original sources

Seismicity map of the state of Nebraska

This map is one of a series of seismicity maps produced by the U.S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Nebraska, even though earthquakes in nearby states or countries may have been felt or may have caused damage in Nebraska. The data in table 1 were used to compile the seismicity map; these data are a corrected, expanded, and updated (through 1987) version of the data used by Algermissen (1969) for a study of seismic risk in the United States. The locations and intensities of some earthquakes were revised and intensities were assigned where none had been before. Many earthquakes were added to the original list from new data sources as well as from some old data sources that had not been previously used. The data in table 1 represent earthquake on the basis of historical and current information. Some of the aftershocks from large earthquake are listed, but not all, especially for earthquakes that occurred before seismic instruments were universally used.

Nebraska

Seismicity map of the state of Florida

This map is one of a series of seismicity maps produced by the U. S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Florida, even though earthquakes in nearby states or countries may have been felt or may have caused damage in Florida.

Florida

Seismicity map of the state of Georgia

This map is one of a series of seimicity maps produced by the U.S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Georgia, even though earthquakes in nearby states or countries may have been felt or may have caused damage in Georgia.

Georgia

Seismicity map of the state of Nebraska

The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States (Algermissen, 1969) which have been recompiled and updated through 1979. These data have been reexamined which resulted in some revisions of epicenters and intensities as well as assignment of intensities to earthquakes that previously had none assigned. Intensity values were updated from new and additional data sources that were not available at the time of original compilation. Some epicenters were relocated on the basis of new information. The data shown in table 1 are estimates of the most accurate epicenter, magnitude, and intensity of each earthquake, on the basis of historical and current information. Some of the aftershocks from large earthquakes are listed but are incomplete in many instances, especially for the ones that occurred before seismic instruments were in universal usage.

Nebraska

Field survey of intensity for the earthquake of July 27, 1980, Sharpsburg, Kentucky

The magnitude 5.2 (mb) northern Kentucky earthquake of July 27, 1980, at 18:52:21.8 UTC, located at 38.17N, 83.91W with a depth of 8 km (as determined by the National Earthquake Information Service), was particularly notable for the widespread damage it did, especially to older chimneys. Investigators from several different organizations were in the field shortly after the earthquake recording aftershocks and checking intensities. The data from postal intensity surveys and field personnel are still coming in, and it will be some time before it is all evaluated and analyzed. This preliminary list of the results of our own field investigations is being produced now in order that the information we gathered may be combined with that of other researchers for analysis. Our investigation, conducted from July 28 to August 3, was designed to delineate the areal distribution of the intensities and to document the amount and type of damage in the epicentral region. Tentative intensities have been assigned to these reports and they have been plotted in figure 1. However, as more information becomes available from other investigators, some of these values may be changed and other locations may be added. Therefore no attempt has been made to contour the data. A maximum Modified Mercalli intensity of VII was assigned to Maysville, Ky., approximately 50 km north of the epicenter, based on the concentrated chimney and other types of building damage there. Elsewhere, similar but scattered chimney damage has been assigned intensity VI.

Kentucky

Seismicity map of the State of Kentucky

The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic kisk Studies in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. The data have been reexamined and intensities assigned where none had been assigned before, on the basis of available data. Other intensity values were updated from new and additional data sources that were not available at the time of original compilation. Some epicenters were relocated on the basis of new information. The data shown in table 1 are estimates of the most accurate epicenter, magnitude, and intensity of each earthquake, on the basis of historical and current information. Some of the aftershocks from large earthquakes are listed but are incomplete in many instances, especially for ones that occurred before seismic instruments were in universal usage.

Kentucky

Seismicity map of the State of Tennessee

The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. These data have been reexamined which resulted in some revisions of epicenters and intensities as well as assignment of intensities to earthquakes that previously had none assigned. Intensity values were updated from new and additional data sources that were not available at the time of original compilation. Some epicenters were relocated on the basis of new information. The data shown in table 1 are estimates of the most accurate epicenter, magnitude, and intensity of each earthquake, on the basis of historical and current information. Some of the aftershocks from large earthquakes are listed but are incomplete in many instances, especially for the ones that occurred before seismic instruments were in universal usage.

Tennessee

Seismicity map of the State of Maine

The earthquake data for the state of Maine shown on this map and listed in table 1 was taken from the U.S. Geological Survey catalog of earthquakes (Hays, and others, 1975). This list of earthquakes was originally compiled for use in preparing the Seismic Risk Studies in the United States (Algermissen, 1969) and has been updated through 1974. The catalog is reasonably complete through 1974; possible discrepancies with existing publications may exist, however, because the file was compiled over a long period of time and by a number of compilers.

Maine