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Found 86 results.

VECTOR seismic array in the Irish Midlands

A network of 210 continuously running, digital seismic stations equipped with short-period sensors (200 stations) and broadband sensors (10 stations) was deployed in an area of ~8 x ~6 km in the Irish Midlands (north of Collinstown) for a time period of ~6 weeks. The network was part of the EU project VECTOR (https://vectorproject.eu) aiming to investigate – among others – possible solutions for least invasive forms of exploration for mineral resources. In this context the collected data was mainly used to derive a 3D model of the subsurface (seismic shear wave velocity) using ambient noise tomography (down to ~1.5km depth). We thank all field crews for their excellent work rendered to the project. Waveform data is available from the GEOFON data centre, under network code 7W.

Bebauungsplaene Kleinblittersdorf/Kleinblittersdorf - Auf Mess

Bebauungspläne und Umringe der Gemeinde Kleinblittersdorf (Saarland), Ortsteil Kleinblittersdorf:Bebauungsplan "Auf Mess" der Gemeinde Kleinblittersdorf, Ortsteil Kleinblittersdorf

EnvSeis project, Kåfjord

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.

3D-Mesh Hamburg

Das 3D-Mesh ist ein vollautomatisch berechnetes, dreidimensionales Oberflächenmodell der Freien und Hansestadt Hamburg. Durch die dreidimensionale Darstellung und die hochauflösenden Bildern entsteht eine einzigartige plastische Ansicht der Stadtfläche. Damit eignet sich der Datensatz hervorragend für Visualisierungszwecke. Grundlage für das 3D-Mesh sind die Bilder der Schrägbildbefliegung 2018. Aus diesen wird eine dreidimensionale Punktwolke erzeugt, die im Anschluss zu einem Polygonnetz vermascht und mit den Schrägbildern texturiert wird. Bei diesem Datensatz handelt es sich um ein 3D-Mesh mit reduzierter Auflösung.

Longterm monitoring of swarm earthquakes in the western Eger rift

The Bohemian Massif (500-250 Ma), the easternmost part of the Variscan orogenic belt, is one of the largest stable outcrops of pre-Permian rocks in Central and Western Europe. This region has persistent geodynamic activity that is clearly linked to upper mantle, and offers a globally unique location for studying intra-continental earthquake swarm (ES) seismicity in combination with deep crust and mantle degassing as well as their interaction with the deep biosphere. The main questions regarding seismicity, microbial life and origin, and heat flow are all linked by the common questions of fluid flow, pathways, and composition. The ICDP project 'Drilling the Eger Rift' aims to develop the most modern, comprehensive laboratory at depth worldwide for the study of ES, crustal fluid flow, mantle-derived CO2 and He degassing, and processes of the deep biosphere. In order to reach a new level of high-frequency, near source, and multi-parameter observation of ES and related phenomena, such a laboratory will comprise of a high-frequency 3D seismic array with a set of four shallow boreholes, combined with modern continuous real-time fluid monitoring at depth (the shallow boreholes) and the study of deep biosphere. Waveform data is available from the GEOFON data centre, under network code 1D.

GEOREAL - GEOthermal experiments in the KTB deep laboratory under REAL conditions of a deep borehole

To seismically monitor the GEOREAL hydraulic stimulation experiment, that took place during the period 6-15 November 2023, a station network was set up in the vicinity of the Kontinentale Tiefbohrung/ KTB deep crustal lab near Windischeschenbach, Germany. The network comprised both surface stations, shallow borehole (25-150 m deep) stations as well as a borehole chain at 2000 m depth in the main borehole, ca. 200m apart from the pilot borehole. First stations were installed in early 2022 and removed in mid-2024. A total of 600 m³ of water was injected into the 4 km deep pilot borehole (KTB-VB, 12° 7.16' E, 49° 48.98' N, 513.418 m above NN ). This volume was injected through a stuck packer in the cased borehole into the open borehole section a depth of 3.85-4 km. No induced seismicity was observed during the injection experiment. Waveform data is available from the GEOFON data centre, under network code 4R, and is fully open.

Methana Magmatic Observational Experiment (MeMaX)

Our group aims to identify evidence of undetected magmatic activity through the identification of microseismic events. We focus on the western Saronic Gulf region within the Aegean Sea. Since 2019, the National Observatory of Athens and the University of Patras have operated six seismic stations on Methana and the nearby Peloponnese mainland.In March 2024, our group deployed an additional 15 remote recording stations from the Geophysical Instrument Pool of GFZ Potsdam across Methana, Aegina, Agistri islands, and the mainland Peloponnese. We use MARK L-4C-3D seismometers in combination with DATA-CUBE3 data loggers equipped with external batteries. This project is part of the MULTI-MAREX initiative funded by the German Federal Ministry of Education and Research (BMBF). Waveform data is available from the GEOFON data centre, under network code 1A.

3D Mesh Modell der Stadt Braunschweig

Das 3D-Mesh ist eine zusammenhängende Kombination aus Geländeoberfläche mitsamt Objekten wie Häusern, Bäumen, Autos und wird deshalb auch als Digitales texturiertes Oberflächenmodell bezeichnet. Es besteht aus einer Vermaschung eines geschlossenen, texturierten Polygonnetzes (Gitternetz) auf der Datengrundlage von Punktwolken und Schrägluftbildern. Das 3D-Mesh repräsentiert eine Momentaufnahme einer realitätsgetreuen Abbildung eines Betrachtungsraumes, welcher sich auf ganze Städte, Kreise und Bundesländer erstrecken kann. Es ist eine mögliche Darstellungsvariante eines 3D-Stadtmodells. Das 3D-Mesh hat die Aktualität, in der die Daten aus den Bildflügen abgeleitet werden - aktuell aus dem Bildflug 2023.

PatachE Stress Observation (PESO)

The PESO array provides two weeks of local seismological observation in the vicinity of the IPOC (Plate Boundary Observatory Network Northern Chile) station Patache (CX.PATCX) to investigate the subsurface structure and the ambient seismic field. Waveform data is available from the GEOFON data centre, under network code 7F, and is fully open.

Illgraben

The Illgraben is a 10 km² steep side valley located in Switzerland. This active debris flow catchment supplies 5-15% of the total sediment load of the Rhône River upstream of Lake Geneva. The 30-80° steep catchment slopes host frequent rock falls and slides. From 2012 to 2014, a network of up to ten Nanometrics Trillium Compact 120s broadband seismometers, sampled by Digos DataCube³ext loggers at 200 Hz (and later by centaur), was deployed in and around the catchment to monitor distributed geomorphic activity. Waveform data is available from the GEOFON data centre, under network code 9J, and is fully open.

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