10.5880/fidgeo.2022.010 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 2023-06-12 urn:ogc:def:crs:EPSG:4326 Catalog of start and end times of lava fountaining episodes from 2 May to 14 June 2021 during the Fagradalsfjall eruption 2023-06-12 revision doi:10.5880/fidgeo.2022.010 Eibl, Eva P. S. Institute of Geosciences, University of Potsdam, Potsdam, Germany author Gnauck, Undine Institute of Geosciences, University of Potsdam, Potsdam, Germany author Hamzaliyev, Shaig Institute of Geosciences, University of Potsdam, Potsdam, Germany author Hersir, Gylfi Páll retired, formerly: Iceland GeoSurvey (ÍSOR), Reykjavik, Iceland author Gudnason, Egill Árni Iceland GeoSurvey (ÍSOR), Reykjavik, Iceland author Pétursson, Fridgeir Iceland GeoSurvey (ÍSOR), Reykjavik, Iceland author GFZ Data Services publisher The Fagradalsfjall eruption from 19 March to 18 September 2021 featured lava fountaining episodes from 2 May to 14 June. These episodes were recorded as tremor pulses on our broadband seismic station NUPH (Nanometrics Trillium Compact 120s) at 5.5 km southeast of the active vent. We used the seismic data bandpass filtered between 1 and 4 Hz to mark the start and end of 7058 tremor pulses. The catalog hence comprises 14116 markers, that are statistically further evaluated in Eibl et al. (in review). From 2 May to 14 June, several changes in pulse duration and repose time were found and used to subdivide this time interval into 6 periods with characteristic pulse pattern. We find exponentially decreasing pulse durations, coexisting short and long pulses and stable pulse durations superimposed by gradually increasing or suddenly decreasing repose times. We discuss the findings in the context of an evolving shallow-conduit container, the crater geometries, partial collapses from the crater rim and the amount of accumulating outgassed magma in Eibl et al. (in review). This data publications releases the catalog of 14116 tremor pulses /lava fountaining episodes. Eibl, Eva P. S. Institute of Geosciences, University of Potsdam, Potsdam, Germany eva.eibl@uni-potsdam.de pointOfContact eruption catalogue Iceland seismology volcanic tremor lava fountaining EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > TECTONIC LANDFORMS > GEYSER EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > EARTHQUAKE OCCURRENCES EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY NASA/GCMD Earth Science Keywords publication In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS GCMD Platforms publication CC BY 4.0 CC BY 4.0 10.21203/rs.3.rs-1453738/v1 DOI IsSupplementTo 10.14470/4S7576570845 DOI IsDerivedFrom eng geoscientificInformation Location of seismometer (Nanometrics) as station NUPH (9F seismic network) -22.4 -22.1 63.8 63.9 2021-05-02 2021-06-14 http://doi.org/10.5880/fidgeo.2022.010 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information We installed a Trillium Compact 120 s seismometer (Nanometrics) as station NUPH (9F seismic network) at the southeast corner of Núpshlídarháls 5.5 km southeast of the eruptive site in Geldingadalir, Iceland. The instrument stood on a concrete base slab shielded from wind and rain using a bucket partly covered by rocks. The instrument was powered using batteries from 16 March, solar panels from 24 March and a wind generator at 10 m distance from 6 April 2021. Data were sampled at 200 Hz, they were stored on a Datacube and regularly downloaded. We used a compass to align the instrument to geographic north.