763adb5c-ece6-4cb7-8379-b9b1e65a6a83 English HELCOM Secretariat data@helcom.fi 2023-03-15T14:45:42 EPSG:3035 Input of impulsive anthropogenic sound (HOLAS 2) 2018-01-15 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/763adb5c-ece6-4cb7-8379-b9b1e65a6a83 Input of impulsive anthropogenic sound includes impulsive events from 2011-2016 • Seismic surveys (HELCOM-OSPAR Registry; national data call submissions as lines in the folder of data) • Explosions (HELCOM-OSPAR Registry) • Pile driving (HELCOM-OSPAR Registry) • Airguns (HELCOM-OSPAR Registry) For the different event types, numeric intensity value was used to represent the pressure as categorized in HELCOM-OSPAR Impulsive noise registry. All nationally reported seismic surveys were given intensity values “Very low” (0.25) - Very low (0.25) - Low (0.5) - Medium (0.75) - High (1) The impact distance has not been taken into account due to the different nature of separate datasets used for the pressure layer. We acknowledge that e.g. pile driving and airguns may impact up to 20 km from the source event. The spread of the sound wave depends on the sound frequency, water salinity, temperature and density. HELCOM Secretariat data@helcom.fi Bio-geographical regions GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme noise pollution GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS HOLAS2 Spatial Pressures Use constraints: Data can be used freely given that the source is cited. Access constraints: No limitations on public access. English environment 7.534828 33.858228 52.502121 66.430213 2011-01-01 2016-12-13 TIFF https://maps.helcom.fi/website/MADS/download/?id=763adb5c-ece6-4cb7-8379-b9b1e65a6a83 WWW:LINK-1.0-http--link Download dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Data source: HELCOM-OSPAR Impulsive noise register. Data quality: The pressure is not coherent across the Baltic Sea, due to lacking reporting Attribute information: Normalised Pressure value Spatial resolution: Original data as points, lines and ICES subrectangles (approx. 20x20 km grid.) Converted to 1x1 km raster