10.5880/fidgeo.2025.069 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2025-09-10 urn:ogc:def:crs:EPSG:4326 Acoustic Recordings of Strokkur Geyser Eruptions: Data from August 23–27, 2023 2025-09-10 revision doi:10.5880/fidgeo.2025.069 Gestrich, Julia E. Ludwig-Maximilians-Universität München author Cimarelli, Corrado Ludwig-Maximilians-Universität München author Capponi, Antonio Ludwig-Maximilians-Universität München author Vossen, Caron E. J. Ludwig-Maximilians-Universität München author GFZ Data Services publisher This dataset comprises acoustic recordings of eruptive events at Strokkur Geyser, Iceland, collected during a field campaign from August 23–27, 2023. The data were recorded using four Chaparral M-60 UHP2 infrasound microphones with a flat frequency response from 0.05–200 Hz. The microphones were deployed in a semicircular array around the geyser pool, approximately 7.5 meters from its center. The signals were digitized using DiGOS Data-Cube3 digitizers with a sampling rate of 400 Hz, ensuring high-resolution capture of both low-frequency infrasound and high-frequency audio signals. Each recording spans approximately 2 ½ hours per day and is timestamped using GPS for precise temporal accuracy. The data are provided as miniSEED files with applied sensitivity, allowing direct calculation of sound pressure levels in Pascal (Pa). The exact locations for each sensor on each day are given below. The dataset highlights acoustic signals associated with the growth, rupture, and disintegration of the water bulge preceding Strokkur’s eruptions. Distinct features, such as "M-shaped" infrasound waveforms, are evident and provide insight into the dynamic processes driving geyser eruptions. The dataset offers a valuable resource for studying acoustic emissions during geyser activity, providing a high-resolution foundation for research on subsurface processes and fluid dynamics. It also facilitates comparative studies of geophysical signals in geysers and analogous volcanic systems. August 23 (Small array configuration): Recording times: 6:25 – 9:41 UTC (exact start times for each sensor may vary as they were started separately). Sensor C3H: 64.31299, -20.30095 Sensor C3G: 64.31308, -20.30089 Sensor C3F: 64.31311, -20.30064 Sensor C3C: 64.31303, -20.30070 August 24 (Half circle around the geyser, until 8:36 UTC): Recording times: 6:50 – 9:17 UTC (exact start times for each sensor may vary). Sensor C3H: 64.31276, -20.30093 Sensor C3G: 64.31280, -20.30073 Sensor C3F: 64.31273, -20.30066 Sensor C3C: 64.31267, -20.30062 August 24 (After 8:36 UTC, modified configuration): Sensor C3F moved to 64.313203, -20.301558 to record gas bubble sounds near another ground opening. Sensor C3H: 64.31276, -20.30093 Sensor C3G: 64.31280, -20.30073 Sensor C3C: 64.31267, -20.30062 August 25 (Half circle around the geyser): Recording times: 6:56 – 9:20 UTC (exact start times for each sensor may vary). Sensor C3H: 64.31276, -20.30093 Sensor C3G: 64.31280, -20.30073 Sensor C3F: 64.31273, -20.30066 Sensor C3C: 64.31267, -20.30062 August 26: No measurements were taken. August 27 (Line configuration, before 8:01 UTC): Recording times: 6:18 – 9:26 UTC (exact start times for each sensor may vary). Sensor C3H: 64.31276, -20.30072 Sensor C3G: 64.31283, -20.30071 Sensor C3F: 64.31288, -20.30071 Sensor C3C: 64.31292, -20.30062 August 27 (After 8:01 UTC, returned to half circle around the geyser): Sensor C3H: 64.31276, -20.30093 Sensor C3G: 64.31280, -20.30073 Sensor C3F: 64.31273, -20.30066 Sensor C3C: 64.31267, -20.30062 Gestrich, Julia E. Ludwig-Maximilians-Universität München Postdoctoral Researcher julia.gestrich@min.uni-muenchen.de pointOfContact Cimarelli, Corrado Ludwig-Maximilians-Universität München Professor cimarelli@min.uni-muenchen.de pointOfContact geyser acoustic source array network fountain atmosphere > atmospheric process > air-water interaction built environment > infrastructure > water distribution system > fountain geological process > volcanism > volcanic eruption hydrosphere > water (geographic) > surface water > freshwater > flowing water hydrosphere > water (geographic) > surface water > thermal water land > natural area > terrestrial area > mountainous area > volcano material > natural material > water (substance) > hot water parameter > acoustic level science > natural science > earth science > geology > volcanology science > physical science > acoustics science > physical science > acoustics > noise > noise type > impulsive noise science > physical science > acoustics > sound > infrasound GEMET - INSPIRE themes, version 1.0 publication EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > TECTONIC LANDFORMS > GEYSER EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > VOLCANIC EXPLOSIVITY EARTH SCIENCE SERVICES > ENVIRONMENTAL ADVISORIES > GEOLOGICAL ADVISORIES > VOLCANIC ACTIVITY NASA/GCMD Earth Science Keywords publication In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > INFRASONIC MICROPHONES GCMD Instruments publication CC BY 4.0 CC BY 4.0 10.5880/fidgeo.2025.068 DOI IsContinuedBy 10.1007/s00445-025-01876-3 DOI IsSupplementTo eng geoscientificInformation Study area at Stokkur Geysir -20.3015 -20.3003 64.3126 64.3134 2023-08-23T06:25:00+00:00 2023-08-27T09:26:00+00:00 http://doi.org/10.5880/fidgeo.2025.069 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information