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Seismic-instrument pier at the Ohio Earthquake Information Center. Seismometers include broadband instruments operated by the Ohio Geological Survey and the U.S. Geological Survey, and a USGS strong-motion sensor.
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As part of the mission of the Ohio Seismic Network, the Division of Geological Survey operates the Ohio Earthquake Information Center (OEIC) to serve as a focal point for dissemination of earthquake information about the state. The functions of the OEIC are broad and include coordination of seismic monitoring in Ohio, answering public and media inquiries on all aspects of earthquakes, producing publications and a Web site, and providing timely and accurate information to the public, media, government, and scientific community when an Ohio earthquake occurs.
The Ohio Earthquake Information Center is headquartered at the Division of Geological Survey's sample repository at Alum Creek State Park, located about 15 miles north of Columbus in Delaware County. A small room adjacent to the lobby, which can be viewed by the public through a window, houses instruments of seismic station ACSO, which consists of two EAI vertical-component broadband seismometers and one Mark L-4 short-period, three-component seismometer. In addition, the station hosts a U.S. Geological Survey U.S. National Seismic Network station, which consists of a Guralp CMG-3 broadband seismometer and a Kinemetrics strong-motion sensor. The USNSN instruments are linked to the National Earthquake Information Center in Golden, Colorado, via satellite for real-time data transmission. Displays relating to earthquakes, including a near-real-time display of ground motion at OEIC, are featured in the lobby.