Ohio-Penn EQ of Sept 25, 1998: Seismograms

OhioSeis & other nearby stations

• Seismogram posted by COW, College of Wooster
  Epicentral distance is about 140 km, note that S wave follows closely behind P wave
  This digital station is quite close to the epicenter!
• Edinboro University of Pennsylvania, even closer to the epicenter (about 50 km)! note the time correction
• University of Toledo, Includes pictures of seismograms and some analysis of felt motions in Toledo, OH.
• State Univ. of New York, Binghamton. In addition to the USNSN station there (BINY), they run a digital three-component long-period system (BNY) at a distance of approximately 380 km. This image from their web-site shows all three-components. Note that the Rayleigh-type surface waves appear on the Z and East components, while the Love-type surface waves appear on the North component (back azimuth is 260 deg.)
• Yale University, a three-component record of an instrument run in collaboration with Boston College
• There is an analog seismogram recorded at The Cleveland Museum of Natural History (provided by B. Bartolotti).
• There is an interesting barograph record provided by G. Yarbeuet at Rice Ave. Middle School in Girard, PA.

MichSeis

• Seismogram (AAMN) that shows P, S, & surface waves
• Detail of P wave arrival at AAMN, "up" first motion
• The UPseis station at Houghton MI (Michigan Tech. Univ.) did record the event, but with the large distance (more than 800 km away from epicenter) and high local storm noise, the earthquake is just barely seen.
• IRIS-"QuakeView". This MichSeis service (or go back to MichSeis main page, find and click on QuakeView) displays all the global seismograms available through IRIS DMC Spyder. Note that the OhioPenn event shows up as a few high-frequency wiggles on the background noise at these faraway stations, but the dynamic range of the IRIS instruments may preserve a usuable signal for those willing to filter the seismograms (also available for donwloading in QuakeView).

Canada: SOSN Network

• University of Western Ontario operates a network of SP stations
• Record section posted by Univ. West.Ontario for the Sept. 25 event
• Go to their link in "other websites" for more information

Canada: National Network

• The Canadian National Network has on-line images of record sections for each hour
• Index to archive of record sections

USGS: USNSN Network

• The NEIC uses the USNSN stations for their real-time location of USA earthquakes
• Record section of USNSN posted by USGS for the Sept. 25 event
• Go to their link in "other websites" for more information

PEPP Network

• The PEPP program operates several digital seismographs in high schools around the country, they are affiliated with a local university
• There are good seismograms from New England stations (affil. Boston College)
• There are good seismograms from stations in eastern Penn. & New Jersey (affil. Princeton)
• Plus, an excellent seismogram from a station near the Ohio-Penn. border! (affil. Purdue)
• The central data archive now has some waveforms from PEPP stations, this link is to the PEPP home page, where you can display the seismograms

Saint Louis University -- Coop. Broad-band Network

• This network operates high-quality broad-band instruments at sites scattered about the mid-continent region. Their web-site shows drum-like images of records for each day. They have records from BLO, the station in Bloomington, IN, operated in conjunction with the University of Indiana.
• Go to data archive at St. Loius University