10.5880/INTERMAGNET.1991.2018 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 2024-08-19 urn:ogc:def:crs:EPSG:4326 Intermagnet Reference Data Set (IRDS) 2018 – Definitive Magnetic Observatory Data 2024-08-19 revision doi:10.5880/INTERMAGNET.1991.2018 INTERMAGNET ICS World Data System WDS author Altay-Sayan Branch of Geophysical Survey of Siberian Branch of Russian Academy of Sciences (Russia) Russian Academy of Sciences, Moskow, Russia author Bureau Central de Magnétisme Terrestre, BCMT (France) Bureau Central de Magnétisme Terrestre, BCMT, Paris, France author Beijing Ming Tombs Geomagnetic Observatory Center, Institute of Geology and Geophysics, Chinese Academy of Sciences (China) Chinese Academy of Sciences, Beijing, China author Bogaziçi University, Kandilli Observatory and Earthquake Research Institute (Turkey) Bogaziçi University, Istanbul, Turkey author British Antarctic Survey (United Kingdom) UK Research and Innovation, Swindon, United Kingdom author British Geological Survey (United Kingdom) UK Research and Innovation, Swindon, United Kingdom author Centre de Recherche en Astronomie Astrophysique et Géophysique (Algeria) Centre de Recherche en Astronomie Astrophysique et Géophysique, CRAAG, Algiers, Algeria author Department of Geophysics, Faculty of Science, University of Zagreb (Croatia) University of Zagreb, Zagreb, Croatia author Dirección Meteorológica de Chile (Chile) Dirección Meteorológica de Chile, Santiago, Chile author École et Observatoire des Sciences de la Terre (France) Bureau Central de Magnétisme Terrestre, BCMT, Paris, France author Finnish Meteorological Institute (Finland) Finnish Meteorological Institute, Helsinki, Finland author Fundació Observatori de l'Ebre (Spain) Fundació Observatori de l'Ebre, Ebro, Spain author Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences (Hungary) Hungarian Academy of Sciences, Budapest, Hungary author Geological and Geophysical Institute of Hungary (Hungary) Geological and Geophysical Institute of Hungary, Budapest, Hungary author Geological Institute of Romania (Romania) Geological Institute of Romania, Bucharest, Romania author Geological Survey of Sweden (Sweden) Geological Survey of Sweden, Uppsala, Sweden author Geophysical Center of the Russian Academy of Sciences (Russia) Russian Academy of Sciences, Moscow, Russia author Geophysical Institute of Slovak Academy of Sciences Slovak Academy of Sciences, Bratislava, Slovakia author Geophysical Institute of the Bulgarian Academy of Sciences (Bulagaria) Bulgarian Academy of Sciences, Sofia, Bulagaria author Geoscience Australia (Australia) Geoscience Australia, Canberra, Australia author GFZ German Research Centre for Geosciences (Germany) GFZ German Research Centre for Geosciences, Potsdam, Germany author Government of South Georgia and the South Sandwich Islands Government of South Georgia and the South Sandwich Islands, Stanley, Falkland Islands author Halliburton Sperry Drilling (United States of America) Halliburton Sperry Drilling, Anchorage, United States of America author Indian Institute of Geomagnetism (India) Indian Institute of Geomagnetism, Mumbai, India author Institut de Physique du Globe de Paris (France) Bureau Central de Magnétisme Terrestre, BCMT, Paris, France author Institut de Recherche pour le Développement (France) Institut de Recherche pour le Développement, Marseille, France author Institut Polaire Français Paul Émile Victor (France) Institut Polaire Français Paul Émile Victor, Brest, France author Institute of Cosmophysical Researches and Radio Wave Propagation FEB RAS (Russia) Russian Academy of Sciences, Moscow, Russia author Institute of Geology and Geophysics, Chinese Academy of Sciences (China) Chinese Academy of Sciences, Beijing, China author Institute of Geophysics of the Vietnamese Academy of Science and Technology (Vietnam) Vietnamese Academy of Science and Technology, Hanoi, Vietnam author Institute of Geophysics, Academy of Sciences of Czech Republic (Czech Republic) Czech Academy of Sciences, Prague, Czech Republic author Institute of Geophysics, National Academy of Sciences of Ukraine (Ukraine) National Academy of Sciences of Ukraine, Kyiv, Ukraine author Institute of Geophysics, Polish Academy of Sciences (Poland) Polish Academy of Sciences, Warsaw, Poland author Institute of Geophysics, Ural Branch of the Russian Academy of Sciences (Russia) Ural Branch of the Russian Academy of Sciences, Russia author Institute of Solar-Terrestrial Physics of Siberian Division of Russian Academy of Science (Russia) Russian Academy of Sciences, Moscow, Russia author Institute of the Ionosphere, National Center of Space Researches and Technologies (Kazakhstan) National Center of Space Researches and Technologies, Almaty, Kazakhstan author Instituto Geofísico del Perú (Peru) Instituto Geofísico del Perú, Lima, Peru author Instituto Geográfico Nacional (Spain) Instituto Geográfico Nacional, Madrid, Spain author Irish Meteorological Service (Ireland) Irish Meteorological Service, Dublin, Ireland author Japan Meteorological Agency (Japan) Japan Meteorological Agency, Tokyo, Japan author Karlsruhe Institute of Technology (Germany) Karlsruhe Institute of Technology, Karlsruhe, Germany author Korea Meteorological Administration (South Korea) Korea Meteorological Administration, Seoul, South Korea author Lanzhou Institute of Seismology of the China Earthquake Administration (China) China Earthquake Administration, Beijing, China author Ludwig Maximilians University Munich (Germany) Ludwig Maximilians University, Munich, Germany author National Antarctic Scientific Center, Ministry of Education and Science of Ukraine (Ukraine) National Antarctic Scientific Center, Kyiv, Ukraine author National Geophysical Research Institute (India) National Geophysical Research Institute, Hyderabad, India author National Meteorological Service of Argentina (Argentina) National Meteorological Service of Argentina, Buenos Aires, Argentina author National Space Institute, Technical University of Denmark (Denmark) Technical University of Denmark, Copenhagen, Denmark author Natural Resources of Canada / Geological Survey of Canada (Canada) Natural Resources of Canada / Geological Survey of Canada, Ottawa, Canada author Real Instituto y Observatorio de la Armada (Spain) Real Instituto y Observatorio de la Armada, Cádiz, Spain author Royal Meteorological Institute (Belgium) Royal Meteorological Institute, Uccle, Belgium author Schmidt Institute of Physics of the Earth of Russian Academy of Sciences (Russia) Russian Academy of Sciences, Moscow, Russia author South African National Space Agency (South Africa) South African National Space Agency, SANSA, Pretoria, South Africa author Swedish Institute of Space Physics (Sweden) Swedish Institute of Space Physics, Kiruna, Sweden author The Institute of Geological & Nuclear Sciences Ltd (New Zealand) The Institute of Geological & Nuclear Sciences Ltd, Wellington, New Zealand author The Ministry of Natural Resources, Environment and Meteorology (Samoa) The Ministry of Natural Resources, Environment and Meteorology, Apia, Samoa author U.S. Geological Survey (USA) U.S. Geological Survey, Reston, Virginia, USA author Universidad Nacional de La Plata (Argentina) Universidad Nacional de La Plata, Buenos Aires, Argentina author University of Oulu (Finland) University of Oulu, Oulu, Finland author University of Stuttgart (Germany) University of Stuttgart, Stuttgart, Germany author Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy, Siberian Branch of the Russian Academy of Sciences (Russia) Russian Academy of Sciences, Moscow, Russia author Institute of Geology and Mineral Exploration-IGME (Greece) Institute of Geology and Mineral Exploration, Athens, Greece author National Institute of Geophysics, Geodesy and Geography of the Bulgarian Academy of Sciences (NIGGG-BAS)(Bulgaria) Bulgarian Academy of Sciences, Sofia, Bulgaria author National Center for Geophysical Research of Lebanon (Lebanon) National Center for Geophysical Research of Lebanon, Beirut, Lebanon author Institut et Observatoire Geophysique d'Antananarivo IOGA (Madagascar) Institut et Observatoire Geophysique, Antananarivo, Madagascar author Universidad Nacional Autonoma de Mexico, Instituto de Geofisica (Mexico) Universidad Nacional Autonoma de Mexico (UNAM), Mexico DF, Mexico author Eotvos Lorand Geophysical Institute of Hungary (Hungary) Eotvos Lorand Geophysical Institute of Hungary, Budapest, Hungary author Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (Russia) Geomagnetic Variation Laboratory IZMIRAN, Troitsk Moscow Region, Russia author Alfred-Wegener-Institut AWI (Germany) Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany author Arctic and Antarctic Research Institute AARI (Russia) Arctic and Antarctic Research Institute, St. Petersburg, Russia author Observatorio Nacional (Brazil) Observatorio Nacional, Rio de Janeiro, Brazil author ZAMG - Zentralanstalt fuer Meteorologie und Geodynamik (Austria) Zentralanstalt fuer Meteorologie und Geodynamik, Vienna, Austria author Bundesamt fuer Seeschiffahrt und Hydrographie (Germany) Federal Maritime and Hydrographic Agency, Hamburg, Germany author Republic Geodetic Institute (Serbia) Republic Geodetic Institute, Belgrade, Serbia author Geomagnetic Institute Grocka Serbia) Geomagnetic Institute Grocka, Grocka, Serbia author Addis Ababa University AAU (Ethiopia) Addis Ababa University, Addis Ababa, Ethiopia author Ecole et Observatoire des Sciences de la Terre EOST (France) Ecole et Observatoire des Sciences de la Terre, Strasbourg, France author Istituto Nazionale di Geofisica e Vulcanologia INGV (Italy) Istituto Nazionale di Geofisica e Vulcanologia, L'Aquila, Italy author Danish Meteorological Institute DMI (Denmark) Danish Meteorological Institute, Copenhagen, Denmark author Institut Polaire Francais Paul Emile Victor IPEV (France) Institut Polaire Francais Paul Emile Victor, Plouzane, France author Maldives Meteorological Service (Republic of Maldives) Maldives Meteorological service, Gan, Republic of Maldives author China Earthquake Administration of Guangdong province (China) China Earthquake Administration of Guangdong province, Guangzhou, China author Directorate General of Telecommunications DGT MOTC (Taiwan) Directorate General of Telecommunications, Taoyuan, Taiwan author National Research Institute of Astronomy and Geophysics NRIAG (Egypt) National Research Institute of Astronomy and Geophysics, Cairo, Egypt author Saint Petersburg branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences IZMIRAN SpB branch (Russia) Saint Petersburg branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of RAS, St. Petersburg, Russia author GFZ Data Services publisher Definitive digital values of the Earth's mangetic field recorded during 1991..2018 at INTERMAGNET observatories around the world. Data includes minute, hourly and daily vector values, along with observatory baseline values for quality control. K indices and annual means are also included. All data is included on the single downloadable archive files. This is the 28th annual publication in the series. Beginning with the publication of the definitive data for 2015, INTERMAGNET stopped publishing individual years of data and started publishing the entire, cumulative definitive data set since INTERMAGNET’s first recorded definitive data in 1991. This data set is known as the "INTERMAGNET Reference Data Set" (IRDS). The IRDS comprises all INTERMAGNET one-minute definitive data since 1991 and is annually updated with a new year and occasional corrections to previous releases. Some national data institutions may have related DOIs that describe subsets of the data. These DOIs are shown under "Related DOIs to be quoted". File names for IRDS data are formatted in the form mag<year>_def<year>.zip. The mag<year> section of the filename describes the year in which the data was recorded. The def<year> section of the filename describes the most recent annual INTERMAGNET publication in which the data was updated. Files where mag<year> = def<year> have had no corrections since their original publication. For example, "mag2015_def2016" indicates that this file is different from the first release "mag2015_def2015". For more information on the data formats used in this publication and the technical standards used to create the data, please refer to the INTERMAGNET Technical Manual (https://doi.org/10.48440/INTERMAGNET.2020.001). INTERMAGNET Secretariat secretary_intermagnet@gfz-potsdam.de pointOfContact definitive data INTERMAGNET geomagnetism magnetism observatory definitive EARTH SCIENCE > SOLID EARTH > GEOMAGNETISM EARTH SCIENCE SERVICES > ENVIRONMENTAL ADVISORIES > GEOLOGICAL ADVISORIES > GEOMAGNETISM NASA/GCMD Earth Science Keywords publication In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS > GEOMAGNETIC STATIONS GCMD Platforms publication The data made available through INTERMAGNET are provided for your use and are not for commercial use or sale or distribution to third parties without the written permission of the institute operating the observatory. Publications making use of the da The data made available through INTERMAGNET are provided for your use and are not for commercial use or sale or distribution to third parties without the written permission of the institute operating the observatory. Publications making use of the da http://www.intermagnet.org URL References 10.48440/INTERMAGNET.2020.001 DOI IsDocumentedBy 10.5880/BFO DOI HasPart 10.18715/BCMT.MAG.DEF DOI HasPart 10.48682/186bd.3f000 DOI HasPart 10.48682/186d7.3f000 DOI HasPart 10.48682/186fd.3f000 DOI HasPart 10.5880/GFZ.2.3.2018.003 DOI HasPart 10.2205/SPG2015min-def DOI HasPart 10.2205/SPG2016min-def DOI HasPart 10.2205/SPG2017min-def DOI HasPart 10.7914/sn/nt DOI HasPart 10.5880/INTERMAGNET.1991.2017 DOI Continues 10.5880/INTERMAGNET.1991.2019 DOI IsContinuedBy 10.5880/INTERMAGNET.2013 DOI HasPart 10.5880/INTERMAGNET.2014 DOI HasPart eng geoscientificInformation -180 180 -90 90 AAA (Alma Ata) maintained by: Institute of the Ionosphere, National Center of Space Researches and Technologies 76.92 76.92 43.25 43.25 AAE (Addis Ababa) maintained by: Addis Ababa University (AAU) 38.766 38.766 9.035 9.035 ABG (Alibag) maintained by: Indian Institute of Geomagnetism 72.87 72.87 18.62 18.62 ABK (Abisko) maintained by: Geological Survey of Sweden 18.823 18.823 68.358 68.358 AIA (Argentine Islands, Akademik Vernadsky base) maintained by: National Antarctic Scientific Center, Ministry of Education and Science of Ukraine -64.25 -64.25 -65.25 -65.25 ALE (Alert) maintained by: Geological Survey of Canada -62.353 -62.353 82.498 82.498 AMS (Amsterdam Island) maintained by: Ecole et Observatoire des Sciences de la Terre (EOST) 77.574 77.574 -37.796 -37.796 API (Apia) maintained by: The Ministry of Natural Resources, Environment and Meteorology 171.781 171.781 -13.815 -13.815 AQU (L'Aquila) maintained by: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 13.317 13.317 42.383 42.383 ARS (Arti) maintained by: Institute of Geophysics, Ural Branch of the Russian Academy of Sciences and Geophysical Center of the Russian Academy of Sciences 58.567 58.567 56.433 56.433 ASC (Ascension Island) maintained by: British Geological Survey -14.38 -14.38 -7.95 -7.95 ASP (Alice Springs) maintained by: Geoscience Australia 133.88 133.88 -23.77 -23.77 BDV (Budkov) maintained by: Institute of Geophysics, Academy of Sciences of Czech Republic 14.02 14.02 49.08 49.08 BEL (Belsk) maintained by: Institute of Geophysics, Polish Academy of Sciences 20.79 20.79 51.84 51.84 BFE (Brorfelde) maintained by: Danish Meteorological Institute (DMI) 11.67 11.67 55.63 55.63 BFO (Black Forest Observatory) maintained by: Karlsruhe Institute of Technology and University of Stuttgart 8.325 8.325 48.331 48.331 BLC (Baker Lake) maintained by: Natural Resources of Canada / Geological Survey of Canada -96.012 -96.012 64.318 64.318 BMT (Beijing Ming Tombs) maintained by: Beijing Ming Tombs Geomagnetic Observatory Center, Institute of Geology and Geophysics, Chinese Academy of Sciences 116.2 116.2 40.3 40.3 BNG (Bangui) maintained by: Institut de Recherche pour le Developpement (IRD) and the IPGP - Institut de Physique du Globe de Paris 18.567 18.567 4.333 4.333 BOU (Boulder) maintained by: U.S. Geological Survey -105.24 -105.24 40.14 40.14 BOX (Borok) maintained by: Geophysical Center of the Russian Academy of Sciences; Bureau central de Magnétisme Terrestre, BCMT 38.23 38.23 58.07 58.07 BRD (Brandon) maintained by: Natural Resources of Canada / Geological Survey of Canada -99.9739 -99.9739 49.87 49.87 BRW (Point Barrow) maintained by: U.S. Geological Survey -156.62 -156.62 71.32 71.32 BSL (Stennis Space Center) maintained by: U.S. Geological Survey -89.64 -89.64 30.35 30.35 CBB (Cambridge Bay) maintained by: Natural Resources of Canada / Geological Survey of Canada -105.031 -105.031 69.123 69.123 CKI (Cocos-Keeling Islands) maintained by: Geoscience Australia 96.8336 96.8336 -12.1875 -12.1875 CLF (Chambon la Foret) maintained by: Bureau Central de Magnétisme Terrestre, BCMT 2.27 2.27 48.02 48.02 CMO (College) maintained by: U.S. Geological Survey -147.86 -147.86 64.87 64.87 CNB (Canberra) maintained by: Geoscience Australia 149.36 149.36 -35.32 -35.32 CPL (Choutuppal) maintained by: National Geophysical Research Institute NGRI 78.92 78.92 17.293 17.293 CSY (Casey Station) maintained by: Geoscience Australia 110.533 110.533 -66.283 -66.283 CTA (Charters Towers) maintained by: Geoscience Australia 146.3 146.3 -20.1 -20.1 CYG (Cheongyank) maintained by: Korea Meteorological Administration 126.854 126.854 36.37 36.37 CZT (Port Alfred) maintained by: Bureau Central de Magnétisme Terrestre, BCMT 51.87 51.87 -46.43 -46.43 DED (Deadhorse) maintained by: U.S. Geological Survey -148.79 -148.79 70.36 70.36 DLR (Del Rio) maintained by: U.S. Geological Survey -100.921 -100.921 29.5 29.5 DLT (Dalat) maintained by: Institute of Geophysics of the Vietnamese Academy of Science and Technology; Bureau Central de Magnétisme Terrestre, BCMT 108.48 108.48 11.94 11.94 DMC (Dome C / Concordia) maintained by: the Ecole et Observatoire des Sciences de la Terre (EOST) and Istituto Nazionale di Geofisica e Vulcanologia (INGV) 123.332 123.332 -75.102 -75.102 DOU (Dourbes) maintained by: Royal Meteorological Institute 4.6 4.6 50.1 50.1 DRV (Dumont d'Urville) maintained by: Ecole et Observatoire des Sciences de la Terre (EOST) 140.007 140.007 -66.665 -66.665 DUR (Duronia) maintained by: Istituto Nazionale di Geofisica e Vulcanologia 14.467 14.467 41.65 41.65 EBR (Ebro) maintained by: Fundació Observatori de l'Ebre 0.333 0.333 40.957 40.957 ESK (Eskdalemuir) maintained by: British Geological Survey -3.2 -3.2 55.32 55.32 EYR (Eyrewell) maintained by: The Institute of Geological & Nuclear Sciences Ltd 172.393 172.393 -43.474 -43.474 FCC (Fort Churchill) maintained by: Natural Resources of Canada / Geological Survey of Canada -94.088 -94.088 58.759 58.759 FRD (Fredericksburg) maintained by: U.S. Geological Survey -77.37 -77.37 38.2 38.2 FRN (Fresno) maintained by: U.S. Geological Survey -119.72 -119.72 37.09 37.09 FUR (Furstenfeldbruck) maintaned by: Ludwig Maximilians University Munich 11.28 11.28 48.17 48.17 GAN (Gan) maintained by: Maldives Meteorological service and ETH Zurich and GFZ German Research Centre for Geosciences 73.153 73.153 -0.694 -0.694 GCK (Grocka) maintained by: Geomagnetic Institute Grocka, Republic Geodetic Institute 20.77 20.77 44.63 44.63 GDH (Qeqertarsuaq/ Godhavn) maintained by: National Space Institute, Technical University of Denmark -53.533 -53.533 69.252 69.252 GLN (Glenlea) maintained by: Geological Survey of Canada -97.1 -97.1 49.6 49.6 GNA (Gnangara) maintained by: Australian Geological Survey Organisation (AGSO), Geoscience Australia 115.947 115.947 -31.78 -31.78 GNG (Gingin) maintained by: Geoscience Australia 115.715 115.715 -31.356 -31.356 GUA (Guam) maintained by: U.S. Geological Survey 144.87 144.87 13.59 13.59 GUI (Guimar) maintained by: Instituto Geográfico Nacional -16.43 -16.43 28.32 28.32 GZH (Zhaoqing) maintained by: Earthquake Administration of Guangdong Province 112.45 112.45 22.97 22.97 HAD (Hartland) maintained by: British Geological Survey -4.48 -4.48 51 51 HBK (Hartebeesthoek) maintained by: South African National Space Agency 27.71 27.71 -25.88 -25.88 HER (Hermanus) maintained by: South African National Space Agency 19.23 19.23 -34.43 -34.43 HLP (Hel) maintained by: Institute of Geophysics, Polish Academy of Sciences 18.82 18.82 54.61 54.61 HON (Honolulu) maintained by: U.S. Geological Survey -158 -158 21.32 21.32 HRB (Hurbanovo) maintained by: Geophysical Institute of Slovak Academy of Sciences 18.19 18.19 47.86 47.86 HRN (Hornsund) maintained by: Institute of Geophysics, Polish Academy of Sciences 15.37 15.37 77 77 HUA (Huancayo) maintained by: Instituto Geofísico del Perú -75.33 -75.33 -12.05 -12.05 HYB (Hyderabad) maintained by: National Geophysical Research Institute(NGRI),GFZ Potsdam 78.55 78.55 17.42 17.42 IPM (Isla de Pascua Mataveri, Easter Island) maintained by: Dirección Meteorológica de Chile; Bureau Central de Magnétisme Terrestre, BCMT -109.42 -109.42 -27.2 -27.2 IQA (Iqaluit) maintained by: Natural Resources of Canada / Geological Survey of Canada -68.518 -68.518 63.753 63.753 IRT (Irkutsk) maintained by: Institute of Solar-Terrestrial Physics of Siberian Division of Russian Academy of Science 104.45 104.45 52.17 52.17 IZN (Iznic) maintained by: Bogaziçi University, Kandilli Observatory and Earthquake Research Institute 29.72 29.72 40.5 40.5 JAI (Jaipur) maintained by: Indian Institute of Geomagnetism 75.8 75.8 26.92 26.92 JCO (Jim Carrigan Observatory) maintained by: British Geological Survey and Halliburton Sperry Drilling -148.799 -148.799 70.356 70.356 KAK (Kakioka) maintained by: Japan Meteorological Agency 140.18 140.18 36.23 36.23 KDU (Kakadu) maintained by: Geoscience Australia 132.47 132.47 -12.69 -12.69 KEP (King Edward Point) maintained by: British Geological Survey -36.4929 -36.4929 -54.2821 -54.2821 KHB (Khabarovsk) maintained by: Institute of Cosmophysical Researches and Radio Wave Propagation FEB RAS 134.69 134.69 47.61 47.61 KIV (Kiev) maintained by: Institute of Geophysics, National Academy of Sciences of Ukraine 30.3 30.3 50.72 50.72 KMH (Keetmanshoop) maintained by: South African National Space Agency; GFZ German Research Centre for Geosciences 18.11 18.11 -26.54 -26.54 KNY (Kanoya) maintained by: Japan Meteorological Agency 130.88 130.88 31.42 31.42 KOU (Kourou) maintained by: Bureau Central de Magnétisme Terrestre, BCMT -52.73 -52.73 5.21 5.21 LER (Lerwick) maintained by: British Geological Survey -1.18 -1.18 60.13 60.13 LNP (Lunping) maintained by: Directorate General of Telecommunications (DGT), 121.167 121.167 25 25 LON (Lonjsko Polje Nature Park) maintained by: Department of Geophysics, Faculty of Science, University of Zagreb 16.659 16.659 45.408 45.408 LOV (Lovoe) maintained by: Geological Survey of Sweden (SGU) 17.824 17.824 59.344 59.344 LRM (Learmonth) maintained by: Geoscience Australia 114.1 114.1 -22.22 -22.22 LVV (Lviv) maintained by: Institute of Geophysics, National Academy of Sciences of Ukraine 23.75 23.75 49.9 49.9 LYC (Lycksele) maintained by: Geological Survey of Sweden 18.8 18.8 64.6 64.6 LZH (Lanzhou) maintained by: Lanzhou Institute of Seismology of the China Earthquake Administration; Bureau Central de Magnétisme Terrestre, BCMT 103.84 103.84 36.1 36.1 MAB (Manhay) maintained by: Royal Meteorological Institute 5.682 5.682 50.298 50.298 MAW (Mawson) maintained by: Geoscience Australia 62.88 62.88 -67.6 -67.6 MBC (Mould Bay) maintained by: Geological Survey of Canada -119.4 -119.4 76.2 76.2 MBO (Mbour) maintained by: Bureau Central de Magnétisme Terrestre, BCMT; Institut de Recherche pour le Développement -16.97 -16.97 14.38 14.38 MCQ (Macquarie Island) maintained by: Geoscience Australia 158.95 158.95 -54.5 -54.5 MEA (Meanook) maintained by: Natural Resources of Canada / Geological Survey of Canada -113.347 -113.347 54.616 54.616 MGD (Magadan) maintained by: Institute of Cosmophysical Researches and Radio Wave Propagation FEB RAS 150.728 150.728 60.051 60.051 MID (Midway) maintained by: U.S. Geological Survey -177.381 -177.381 28.21 28.21 MLT (Misallat) maintained by: National Research Institute of Astronomy and Geophysics (NRIAG) 31.221 31.221 30.198 30.198 MMB (Memambetsu) maintained by: Japan Meteorological Agency 144.19 144.19 43.91 43.91 NAQ (Narsarsuaq) maintained by: National Space Institute, Technical University of Denmark -45.442 -45.442 61.16 61.16 NCK (Nagycenk) maintained by: Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences 16.72 16.72 47.63 47.63 NEW (Newport) maintained by: U.S. Geological Survey -117.12 -117.12 48.27 48.27 NGK (Niemegk) maintained by: GFZ German Research Centre for Geosciences 12.68 12.68 52.07 52.07 NUR (Nurmijarvi) maintained by: Finnish Meteorological Institute 24.66 24.66 60.51 60.51 NVS (Novosibirsk) maintained by: Altay-Sayan Branch of Geophysical Survey of Siberian Branch of Russian Academy of Sciences 83.23 83.23 54.85 54.85 OTT (Ottawa) maintained by: Natural Resources of Canada / Geological Survey of Canada -75.552 -75.552 45.403 45.403 PAF (Port-Aux-Francais) maintained by: Ecole et Observatoire des Sciences de la Terre (EOST) 70.262 70.262 -49.353 -49.353 PAG (Panagjurishte) maintained by: Geophysical Institute of the Bulgarian Academy of Sciences; GFZ German Research Centre for Geosciences 24.2 24.2 42.5 42.5 PBQ (Poste-de-la-Baleine) maintained by: Geological Survey of Canada -77.745 -77.745 55.278 55.278 PEG (Pedeli) maintained by: Institute of Geology and Mineral Exploration-IGME 23.93 23.93 38.083 38.083 PET (Paratunka) maintained by: Institute of Cosmophysical Researches and Radio Wave Propagation FEB RAS 158.248 158.248 52.971 52.971 PHU (Phuthuy) maintained by: Institute of Geophysics of the Vietnamese Academy of Science and Technology; Bureau Central de Magnétisme Terrestre, BCMT 105.95 105.95 21.03 21.03 PIL (Pilar) maintained by: National Meteorological Service of Argentina -63.881 -63.881 -31.667 -31.667 PPT (Pamatai) maintained by: Bureau Central de Magnétisme Terrestre, BCMT (France) -149.58 -149.58 -17.57 -17.57 PST (Port Stanley) maintained by: British Geological Survey -57.89 -57.89 -51.7 -51.7 QSB (Qsaybeh) maintained by: National Center for Geophysical Research-CNRS 35.644 35.644 33.871 33.871 RES (Resolute Bay) maintained by: Natural Resources of Canada / Geological Survey of Canada -94.895 -94.895 74.69 74.69 SBA (Scott Base) maintained by: The Institute of Geological & Nuclear Sciences Ltd 166.78 166.78 -77.85 -77.85 SBL (Sable Island) maintained by: British Geological Survey -60.0095 -60.0095 43.9321 43.9321 SFS (San Fernando) maintained by: Real Instituto y Observatorio de la Armada -5.945 -5.945 36.667 36.667 SHE (Saint Helena) maintained by: GFZ German Research Centre for Geosciences -5.747 -5.747 -15.961 -15.961 SHU (Shumagin) maintained by: U.S. Geological Survey -160.46 -160.46 55.35 55.35 SIT (Sitka) maintained by: U.S. Geological Survey -135.33 -135.33 57.06 57.06 SJG (San Juan) maintained by: U.S. Geological Survey -66.15 -66.15 18.11 18.11 SOD (Sodankyla) maintained by: University of Oulu 26.63 26.63 67.37 67.37 SPG (Saint Petersburg) maintained by: Saint Petersburg branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences (IZMIRAN SpB branch) and Geophysical Center of the Russian Academy of Sciences (GC RAS) 29.716 29.716 60.542 60.542 SPT (San Pablo-Toledo) maintained by: Instituto Geográfico Nacional -4.35 -4.35 39.55 39.55 STJ (St John's) maintained by: Natural Resources of Canada / Geological Survey of Canada -52.677 -52.677 47.595 47.595 SUA (Surlari) maintained by: Geological Institute of Romania; GFZ German Research Centre for Geosciences 26.25 26.25 44.68 44.68 TAM (Tamanrasset) maintained by: Centre de Recherche en Astronomie Astrophysique et Géophysique; Bureau Central de Magnétisme Terrestre, BCMT 5.53 5.53 22.79 22.79 TAN (Antananarivo) maintained by: Institut et Observatoire Geophysique d' Antananarivo (IOGA) 47.55 47.55 -18.92 -18.92 TDC (Tristan da Cunha) maintained by: GFZ German Research Centre for Geosciences; National Space Institute, Technical University of Denmark -12.315 -12.315 -37.067 -37.067 TEO (Toloyucan) maintained by: Universidad Nacional Autonoma de Mexico (UNAM); Royal Meteorological Institute, Centre de Physique du Globe -99.184 -99.184 19.75 19.75 THL (Qaanaaq/Thule) maintained by: National Space Institute, Technical University of Denmark -69.227 -69.227 77.47 77.47 THY (Tihany) maintained by: Geological and Geophysical Institute of Hungary 17.89 17.89 46.9 46.9 TIK (Tixie Bay) maintained by: Geomagnetic Variation Laboratory IZMIRAN Troitsk 129 129 71.58 71.58 TRW (Trelew) maintained by: Universidad Nacional de La Plata; Royal Meteorological Institute -65.3 -65.3 -43.3 -43.3 TSU (Tsumeb) maintained by: South African National Space Agency 17.584 17.584 -19.202 -19.202 TTB (Tatuoca) maintained by: Brazil Observatorio Nacional and GFZ German Research Centre for Geosciences -48.513 -48.513 -1.205 -1.205 TUC (Tucson) maintained by: U.S. Geological Survey -110.73 -110.73 32.18 32.18 UPS (Uppsala) maintained by: Geological Survey of Sweden 17.353 17.353 59.903 59.903 VAL (Valentia) maintained by: Irish Meteorological Service -10.25 -10.25 51.933 51.933 VIC (Victoria) maintained by: Natural Resources of Canada / Geological Survey of Canada -123.42 -123.42 48.52 48.52 VNA (Neumayer Station III) maintained by: Alfred-Wegener-Institut (AWI) and GFZ German Research Centre for Geosciences -8.282 -8.282 -70.683 -70.683 VOS (Vostok) maintained by: Station "VOSTOK", Arctic and Antarctic Research Institute (AARI) St.Petersburg 106.837 106.837 -78.464 -78.464 VSS (Vassouras) maintained by: Brazil Observatorio Nacional and GFZ German Research Centre for Geosciences -43.6 -43.6 -22.4 -22.4 WIC (Conrad) maintained by: ZAMG - Zentralanstalt fuer Meteorologie und Geodynamik 15.861 15.861 47.93 47.93 WNG (Wingst) maintained by: Federal Maritime and Hydrographic Agency Hamburg, GFZ German Research Centre for Geosciences 9.073 9.073 53.743 53.743 YAK (Yakutsk) maintained by: Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS 129.66 129.66 61.96 61.96 YKC (Yellowknife) maintained by: Natural Resources of Canada / Geological Survey of Canada -114.482 -114.482 62.48 62.48 http://doi.org/10.5880/INTERMAGNET.1991.2018 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information Geomagnetic data is recorded and quality controlled at the institutions responsible for each observatory. Before becoming a member of INTERMAGNET, institutes must make a detailed submission for each observatory that is to join. This submission is verified by a committee in INTERMAGNET before the observatory is admitted. Only data from INTERMAGNET members is published by INTERMAGNET. Each annual definitive data set is checked for quality by a team of data checkers in INTERMAGNET before the data is admitted to the series for that year.