Fibre optic distributed dynamic strain array (GFZ-Landsvirkjun) at Theistareykir, North-east Iceland ...

• Main Authors: Jousset, Philippe, Mortensen, Anette, Wollin, Christopher, Diaz-Meza, Sergio, Prestifilippo, Michele
• Format: Dataset
• Language: unknown
• Published: GFZ Data Services 2023
• Subjects: Distributed daynamic strain sensing; Distributed Acoustic Sensing; DAS; teleseismic earthquakes; dark fiber; telecommunication fiber; DAS-month; EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > SEISMIC PROFILE > SEISMIC BODY WAVES; EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > SEISMIC PROFILE > SEISMIC SURFACE WAVES; Iceland
• Online Access: https://dx.doi.org/10.5880/gfz.2.2.2023.002; https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=ac1f0135-feeb-11ed-95b8-f851ad6d1e4b

The GFZ-Landsvirkjun Theistareykir Fibre array is located in the Theytareykir geothermal area, in North Iceland. It is collocated with arrays of broadband seismometers and gravity meters (see e.g., https://doi.org/10.1186/s40517-021-00208-w). The geometry of the fibre array is following the telecom network in the area, and was chosen to test the seismological capabilities of telecom cables in this geothermal environment. We connected an iDAS V2 interrogator from Silixa. The interrogator location is lat=65.898041, lon=-16.966274. The array starts N-S and after 1.5 km, turns towards the East, up to a local transmission antenna station for mobile phones. The length of the path is ~5 km. The length of the cable is actually more than 15 km, as other fibre instance is connected at the transmission antenna station.. Jumps were performed along the cable to geo-locate the channels. The exact location of the fibre can unfortunately not be disclosed. Original recordings at 1000 Hz were downsampled to 200 Hz using a ...