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Drilling a seismic borehole for the National Seismic Network at Mendenhall Laboratory on the main campus of The Ohio State University, Columbus, Franklin County, Ohio. Sprowls Drilling Company of Sunbury, Ohio, did the drilling work for the borehole. At a depth of 125 feet, in the Columbus Limestone, a cavern was encountered. An unsuccessful attempt was made to plug the cavern. The site was abanonded as a location in the United States Geological Survey's nationwide network of seismographs because of the condition of the limestone on the campus of The Ohio State University. The image was taken by Michael C. Hansen in August 1993.
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. Shown here are the Vibroseis trucks that served as the source of the ground vibrations. The trucks are more or less identical, with each one vibrating in sync with the others. Multiple trucks were used to increase the energy injected into the ground. One recording truck was used elsewhere to record the signals after they returned to the surface. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca,...
The COCORP truck caravan moving west to east across Coshocton County, Ohio. The Vibroseis trucks served as the source of the ground vibrations. Multiple trucks were used to increase the energy injected into the ground. Shown here is the interior of the recording truck used elsewhere to record the signals after they returned to the surface. The recording truck was also known at the �doghouse.� This is where the signals from the geophone sensors on the ground are collected and transferred to magnetic tape. It also contains equipment that signals the vibrator trucks to begin operation. Normally the doghouse is stationary while the vibrators move down the road. The doghouse has a sophisticated switching equipment that...
The COCORP truck caravan moving west to east across Coshocton County, Ohio. The Vibroseis trucks served as the source of the ground vibrations. Multiple trucks were used to increase the energy injected into the ground. Shown here is the geophone connection to the instrument recording truck used elsewhere to record the signals after they returned to the surface. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca, New York, conducted a National Science Foundation funded seismic-reflection...
Seismograph drum recorders in Schmidt Hall at Xavier University, Cincinnati, Hamilton County, Ohio. The image showsFather Stechschulte around 1937.
Dennis N. Hull installing station MM11 of the MOMA Seismic Array location at a property in Union County, Ohio. MOMA is the acronym for the Missouri to Massachusetts Seismic Array. It was a short-term experiment, by Michael E. Wysession and others, for studying the core-mantle boundary and shear wave splitting. The image was taken by Michael C. Hansen in October 1994.
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. Shown here are the Vibroseis trucks that served as the source of the ground vibrations. The trucks are more or less identical, with each one vibrating in sync with the others. Multiple trucks were used to increase the energy injected into the ground. One recording truck was used elsewhere to record the signals after they returned to the surface. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca,...
Drilling a seismic borehole for the National Seismic Network at Mendenhall Laboratory on the main campus of The Ohio State University, Columbus, Franklin County, Ohio. Sprowls Drilling Company of Sunbury, Ohio, did the drilling work for the borehole. At a depth of 125 feet, in the Columbus Limestone, a cavern was encountered. An unsuccessful attempt was made to plug the cavern. The site was abanonded as a location in the United States Geological Survey's nationwide network of seismographs because of the condition of the limestone on the campus of The Ohio State University. The image was taken by Michael C. Hansen in August 1993.
A shear wave analysis study done by the Indiana Geological Survey. The study was to profile seismic shear velocity along the vertical extent of water observation wells for an earthquake susceptibility profile to determine liquification potential in the area studied. The seismic shear was measured at water observation wells around Ohio. The water observation well location pictured is at the Dayton Well Field in Dayton, Montgomery County, Ohio. The image was made by Michael C. Hansen in 1997.
Shear wave analysis logging equipment for a shear wave analysis study done by the Indiana Geological Survey. The study was to profile seismic shear velocity along the vertical extent of water observation wells for an earthquake susceptibility profile to determine liquification potential in the area studied. The seismic shear was measured at water observation wells around Ohio. The water observation wells had logs of glacial material sediment, which made them particularly good locations for the study. The water observation well location pictured is in Preble County, Ohio. The image was made by Michael C. Hansen in 1997.
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca, New York, conducted a National Science Foundation funded seismic-reflection profile across Ohio. Five 22-ton vibrator trucks owned by Seismograph Services of Tulsa, Oklahoma, sent vibrations to depths of 25 miles or more into the ground. The reflected seismic data profile is used as the primary data source for investigation of the deep crustal...
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca, New York, conducted a National Science Foundation funded seismic-reflection profile across Ohio. Five 22-ton vibrator trucks owned by Seismograph Services of Tulsa, Oklahoma, sent vibrations to depths of 25 miles or more into the ground. The reflected seismic data profile is used as the primary data source for investigation of the deep crustal...
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. Shown here are the Vibroseis trucks that served as the source of the ground vibrations. The trucks are more or less identical, with each one vibrating in sync with the others. Multiple trucks were used to increase the energy injected into the ground. One recording truck was used elsewhere to record the signals after they returned to the surface. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca,...
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca, New York, conducted a National Science Foundation funded seismic-reflection profile across Ohio. Five 22-ton vibrator trucks owned by Seismograph Services of Tulsa, Oklahoma, sent vibrations to depths of 25 miles or more into the ground. The reflected seismic data profile is used as the primary data source for investigation of the deep crustal...
The COCORP vibrator truck caravan moving west to east across Coshocton County, Ohio. The photograph was taken by Michael C. Hansen in October 1987. The location is approximate to an area in southern Coshocton County where the seismic line was produced. In the autumn of 1987, the Consortium for Continental Reflection Profiling (COCORP), based at Cornell University in Ithaca, New York, conducted a National Science Foundation funded seismic-reflection profile across Ohio. Five 22-ton vibrator trucks owned by Seismograph Services of Tulsa, Oklahoma, sent vibrations to depths of 25 miles or more into the ground. The reflected seismic data profile is used as the primary data source for investigation of the deep crustal...
Drilling a seismic borehole for the National Seismic Network at Mendenhall Laboratory on the main campus of The Ohio State University, Columbus, Franklin County, Ohio. Sprowls Drilling Company of Sunbury, Ohio, did the drilling work for the borehole. At a depth of 125 feet, in the Columbus Limestone, a cavern was encountered. An unsuccessful attempt was made to plug the cavern. The site was abanonded as a location in the United States Geological Survey's nationwide network of seismographs because of the condition of the limestone on the campus of The Ohio State University. The image was taken by Michael C. Hansen in August 1993.
Drilling a seismic borehole for the National Seismic Network at Mendenhall Laboratory on the main campus of The Ohio State University, Columbus, Franklin County, Ohio. Sprowls Drilling Company of Sunbury, Ohio, did the drilling work for the borehole. At a depth of 125 feet, in the Columbus Limestone, a cavern was encountered. An unsuccessful attempt was made to plug the cavern. The site was abanonded as a location in the United States Geological Survey's nationwide network of seismographs because of the condition of the limestone on the campus of The Ohio State University. The image was taken by Michael C. Hansen in August 1993.
Drilling a seismic borehole for the National Seismic Network at Mendenhall Laboratory on the main campus of The Ohio State University, Columbus, Franklin County, Ohio. Sprowls Drilling Company of Sunbury, Ohio, did the drilling work for the borehole. At a depth of 125 feet, in the Columbus Limestone, a cavern was encountered. An unsuccessful attempt was made to plug the cavern. The site was abanonded as a location in the United States Geological Survey's nationwide network of seismographs because of the condition of the limestone on the campus of The Ohio State University. The image was taken by Michael C. Hansen in August 1993.
A shear wave analysis study done by the Indiana Geological Survey. The study was to profile seismic shear velocity along the vertical extent of water observation wells for an earthquake susceptibility profile to determine liquification potential in the area studied. The seismic shear was measured at water observation wells around Ohio. Donald L. Eggert of the Indiana Geological Survey is shown holding the geophone attached to a packer with inflator and sensor cable ready to be dropped down the well casing in the foreground of the image. The water observation well location pictured is in Preble County, Ohio. The image was made by Michael C. Hansen in 1997.
Shear wave analysis logging equipment for a shear wave analysis study done by the Indiana Geological Survey. The study was to profile seismic shear velocity along the vertical extent of water observation wells for an earthquake susceptibility profile to determine liquification potential in the area studied. The seismic shear was measured at water observation wells around Ohio. The water observation wells had logs of glacial material sediment, which made them particularly good locations for the study. The water observation well location pictured is in Preble County, Ohio. The image was made by Michael C. Hansen in 1997.
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