Data Publication

ISMENET - ISMEtpasa seismic NETwork

Becker, Dirk | Chen, Xiang | Martinez-Garzon, Patricia

GFZ Data Services

(2023)

15 station seismological network spanning the North Anatolian Fault Zone (NAFZ) toward the east of Ismetpasa to detect possible microseismicity and slow slip events in the creeping section of the NAFZ. The network consists of 10 three component 4.5 Hz geophone sensors in combination with DATACUBE3 recorders and five Trillium Horizon 120 broadband seismometers connected to Centaur data loggers. Geophone stations are buried at shallow depths while two of the broadband seismometers are installed in-house at basement level. The other three Trillium sensors are posthole installations in the field. The seismic network spans the same part of the NAFZ that is also monitored by a GNSS network installed by École Normale Supérieure (ENS) with two broadband seismometers being co-located with GNSS sensors. In addition, a set of creepmeters is installed close to Ismetpasa at the western end of the seismological network. The aim of the seismological study is twofold: a) Finding possible seismological expressions of the slow slip transients visible in the GNSS data and b) detecting microseismicity that is not listed in the regional Turkish earthquake catalogs based on seismological networks with much larger station spacing in the study area. The obtained results will hopefully give new insights into the seismological characteristics of a segment of a major continental transform fault capable of hosting M7 events but showing at the same time transient slow slip events and seismic creep.

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