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
This dataset comprises unprocessed high-speed video recordings of eruptive events at Strokkur Geyser, Iceland, captured during a field campaign from August 23–27, 2023. The videos are provided as sequences of individual TIFF files for each frame, enabling detailed analysis of the geyser’s eruption cycle. These high-resolution recordings, made using a Chronos 2.1-HD high-speed camera at 500 frames per second with a resolution of 1920×1080 pixels, are specifically focused on capturing the growth and rupture of the water bulge, rather than the resulting geyser fountain. Each video is, on average, 4.29 seconds long, providing high temporal resolution of these rapid processes.
The dataset includes 29 analyzed events, selected for their detailed capture of the water bulge dynamics. These videos document critical stages of the eruption process, including the bulge’s growth, rupture, and associated fluid dynamics. The recordings were synchronized with infrasound and audio data collected during the campaign, allowing for integrated analysis of acoustic signals and visual observations.
This dataset provides a valuable resource for studying water bulge dynamics and associated acoustic emissions. It complements other geophysical data collected during the campaign and offers insights into surface and subsurface processes relevant to geysers and analogous volcanic systems.
Geysers are localized hydrothermal vents that periodically erupt with gas bubbles at the surface. Understanding their distribution, dynamics, and conduit geometry is critical to understand the fluid and heat transfer through the crust. To explore this at the Geysir geothermal field in Iceland, we analyzed the spatial distribution of thermal features using high-resolution UAV-based optical and infrared cameras. Based on this, Walter et al. (2020) identified 364 distinct thermal spots. Here we release the high-resolution drone orthomosaic dataset at the Geysir geothermal field, Iceland.