This network of sixteen geophones and six broadbands was installed in Kåfjord, Troms og Finnmark, Norway, to study two rockslides: Njárgavárri and Indre Nordneset. Each study site had three broadbands from September 2023 to June 2025. In addition, were installed and recording: September – November 2023: six geophones on each site; April – August 2024: four geophones at Njárgavárri and ten at Indre Nordneset. The geophones were installed locally around the rockslides while the broadbands were installed one to a few kilometers from the rockslides (except for one of them directly at Indre Nordneset). The geophones in Njárgavárri were first installed as two triangular antennas of four stations each (three in triangle and one in the middle) and were then replaced by a small aperture array around the most active part of the unstable slope. The goal was to record all activities: rock falls, cracking and creeping movements. In Indre Nordneset, the geophone stations were placed in a small aperture array all around the main scarp and surface of failure to record the cracking activity. The geophones are of type 3-D Geophone PE-6/B with DATA-CUBE3 (built-in GPS). The broadbands are of type STS-2.5 with EDR-10 digitizers. Sampling frequency was 400 Hz for geophone stations, 200 Hz broadbands. Gain was at 16 (15.258789 nV/count) for the geophone stations, set on high (100 nV/bit) for the broadband stations. Waveform data is available from the GEOFON data centre, under network code 8I.
Messung kosmogener Radionuklide (10Be, 36Cl, 26Al) im GRIP Eiskern. Interpretation der Resultate mit Schwergewicht auf: Herleitung von Paleo-Niederschlagsraten, Rekonstruktion der Sonnenaktivitaet und des Geomagnetfeldes, Untersuchung des Zusammenhangs zwischen Sonnenaktivitaet und Luminositaet, Vergleich mit den 14C-Daten von Baumringen. Trennung von Produktions- und Systemeffekten.
The AWI Network Antarctica is a local to regional seismological network around the German research base Neumayer Station in Dronning Maud Land, a coastal region in eastern Antarctica. The network is providing high quality data for scientific research and monitoring regional seismicity in East Antarctica, which is generally believed to be seismically inactive. However, the station coverage in Antarctica is in general sparse and small magnitude local events remain undetected by global seismic networks. The AW network increases the station coverage substantially and has the potential to reveal regional earthquakes and cryogenic events. By 2016 the network consists of 3 stations transmitting data in real-time and 4 stations, which are only accessible in the archive. Stations are equipped with three-component broadband sensors buried in snow pits or on outcropping bedrock if present. An additional small aperture array of vertical short-period sensors was installed in 1996. Between 1993 and 1999 digital data are provided as triggered event segments only, after 1999 continuous data sets are available. Stations might have larger data gaps during the austral winter, when power supply is limited. All data are freely distributed by the GEOFON data center.