83a6d7a8-1efb-11ee-8a7e-3ce9f7462b93 Koninklijk Nederlands Meteorologisch Instituut (KNMI) Koninklijk Nederlands Meteorologisch Instituut (KNMI) Koninklijk Nederlands Meteorologisch Instituut (KNMI) opendata@knmi.nl opendata@knmi.nl 2026-06-02T08:23:42.005177Z ISO 19115 ISO 19115:2003 NL Kernset 1.3 KNMI 2.1.0 http://www.opengis.net/def/crs/EPSG/0/28992 http://www.opengis.net/def/crs/EPSG/0/28992 Earthquake Location Uncertainty Maps for the Netherlands Earthquake Location Uncertainty Maps for the Netherlands Aardbevingen Locatie Onzekerheid in Nederland 2023-07-19 1 urn:xkdc:ds:nl.knmi::netherlands_earthquake_location_uncertainty/1.0/ This dataset represents expected location uncertainty of seismic events, when using sensors from the Netherlands seismic network and sensors just across the boarder in Belgium and Germany. The computation has been done over a grid covering the Netherlands, with a fixed source depth of 3 km. For each scenario event, the location probability density function has been determined, both as function of depth and as function of the horizontal coordinates. The assumption has been made that these probability density functions can be approximated as being (multivariate) normal distributions, such that they can be described with standard deviations. The uncertainty in the horizontal plane is parameterized with σ1 (S1), σ2 (S2) and θ (T). S1 is the standard deviation in the direction with maximum uncertainty, which occurs at a certain angle (T) with north. S2 is the standard deviation in the perpendicular direction with minimum uncertainty. In the vertical direction, the probability density function is computed at the most likely epicenter. The corresponding uncertainty is parameterized with SZ. Additionally, the azimuthal gap (AG) has been computed and is included in the dataset. This parameter describes how well the azimuthal coverage of stations is for event location. Details are described in the following technical report: https://cdn.knmi.nl/knmi/pdf/bibliotheek/knmipubTR/TR405.pdf. This dataset represents expected location uncertainty of seismic events, when using sensors from the Netherlands seismic network and sensors just across the boarder in Belgium and Germany. The computation has been done over a grid covering the Netherlands, with a fixed source depth of 3 km. For each scenario event, the location probability density function has been determined, both as function of depth and as function of the horizontal coordinates. The assumption has been made that these probability density functions can be approximated as being (multivariate) normal distributions, such that they can be described with standard deviations. The uncertainty in the horizontal plane is parameterized with σ1 (S1), σ2 (S2) and θ (T). S1 is the standard deviation in the direction with maximum uncertainty, which occurs at a certain angle (T) with north. S2 is the standard deviation in the perpendicular direction with minimum uncertainty. In the vertical direction, the probability density function is computed at the most likely epicenter. The corresponding uncertainty is parameterized with SZ. Additionally, the azimuthal gap (AG) has been computed and is included in the dataset. This parameter describes how well the azimuthal coverage of stations is for event location. Details are described in the following technical report: https://cdn.knmi.nl/knmi/pdf/bibliotheek/knmipubTR/TR405.pdf. Deze dataset representeert de verwachte locatie onzekerheid van aardbevingen waarbij er sensoren van het Nederlands seismisch netwerk en sensoren net over de grens in Belgie en Duitsland zijn gebruikt. De berekening is gedaan voor een grid van punten over Nederland, met een vaste brondiepte op 3 km. Voor elke scenario beving is de locatie kansendichtheidsfunctie bepaald, zowel als functie van diepte als in het horizontale vlak. Er is aangenomen dat deze kansendichtheidsfuncties benaderd kunnen worden als zijnde (multivariate) normaalverdelingen, zodat ze beschreven kunnen worden met standaard deviaties. De onzekerheid in het horizontale vlak is geparameteriseerd met σ1 (S1), σ2 (S2) and θ (T). S1 is de standaard deviatie in de richting met maximale onzekerheid, met een bepaalde hoek ten opzichte van noord (theta). S2 is de standaard deviatie in de loodrechte richting met minimale onzekerheid. In de diepterichting is de kansendichtheidsfunctie bepaald op de plaats van het meest waarschijnlijke epicentrum. De diepte onzekerheid wordt geparametriseerd met SZ. Verder is de azimutale equidistante (AG) berekend and toegevoegd aan de dataset. Deze parameter beschrijft hoe goed de azimutale dekking van stations is voor aardbeving locaties. Details zijn beschreven in het technische rapport: https://cdn.knmi.nl/knmi/pdf/bibliotheek/knmipubTR/TR405.pdf. Koninklijk Nederlands Meteorologisch Instituut (KNMI) Koninklijk Nederlands Meteorologisch Instituut (KNMI) Koninklijk Nederlands Meteorologisch Instituut (KNMI) opendata@knmi.nl opendata@knmi.nl Seismology and acoustics Seismology and acoustics Seismologie en akoestiek Earthquakes Earthquakes Aardbevingen Netherlands Netherlands Nederland Seismicity Seismicity Seismiciteit Seismometer Seismometer Seismometer Sensors Sensors Sensoren DG Discovery Properties Vocabulary 1.0 DG Discovery Properties Vocabulary 1.0 2013-01-01 No use limitations No use limitations Geen gebruiksbeperkingen https://creativecommons.org/licenses/by/4.0/deed.nl https://creativecommons.org/licenses/by/4.0/deed.nl 1000 climatologyMeteorologyAtmosphere -20000 301000 270000 671000 2021-09-01 9999-12-31 NetCDF NetCDF 4 Koninklijk Nederlands Meteorologisch Instituut (KNMI) Koninklijk Nederlands Meteorologisch Instituut (KNMI) Koninklijk Nederlands Meteorologisch Instituut (KNMI) opendata@knmi.nl opendata@knmi.nl https://dataplatform.knmi.nl/catalog/datasets/index.html?x-dataset=netherlands_earthquake_location_uncertainty&x-dataset-version=1.0 landingpage KNMI Data Platform KNMI Data Platform Network configuration and site noise levels Network configuration and site noise levels Netwerk configuratie en lokale ruisniveaus