Following the motto “Four eyes see more than two” we want to ask the crowd to find links to public earthquake databases from around the world. There are the usual suspects, USGS, EMSC and such, but they only provide events above a certain magnitude. We are also interested in small, local microseismic events which are early markers of volcanic activity. Shortly after they happened, one can plot raw sculptures of the geological underworld in which volcanoes root so we can joyfully ruminate on them in the Volcanocafé.
Finding these lists, bulletins, queries etc. is sometimes like looking for a needle in a haystack, especially when you don´t understand the language. So this is where the riddle trained gang here could be extremely helpful. From the collected links we want to compile a Volcanocafé webpage for future reference and easy access.
The earthquake lists should at least contain origin time, latitude, longitude, depth and magnitude. If quality or focal mechanisms are provided the categorally non-expert VC analysts may happily chew on it.
Some data are more convenient to export than others, and honestly, when you cannot download it all in one file, like for example what IGN kindly provides for the Canaries, then extracting a useful list can be a dreadful chore. So the possibility to export event details in text form, like csv, that can be imported into Excel and other scientific programs, is a real plus. Copy-pasting directly from webpages sometimes also works well, sometimes not. More often than not one has to convert the varying date, time or coordinate formats to something useful.
As a treat, most seismological webpages generate maps to illustrate recent earthquakes for the general public, so you might find some diamond here and there, like the 3D applet of the Vesuvian Observatory. Some data can be exported as kml files for Google Earth, which has become a geographical killer application for both experts and laymen.
In most cases utilizing the data in a non-commercial way with properly citing it´s sources, is sufficient in respect to the corresponding copyrights, but please check it out for yourself!
So, here is a start:
IRIS SeismiQuery (Seattle, USA) from ICS, NEIC PDE, ANF and GCMT catalogues for quakes something above magnitude 1.7 dating back to 1960. Output as map, html or WEED event file (txt): http://www.iris.edu/SeismiQuery/sq-events.htm
EMSC (European-Mediterranean Seismological Centre) for magnitudes min 3. Output as map, kml, csv (max. 5000): http://www.emsc-csem.org/Earthquake/?filter=yes
USGS custom region search magnitude 2.5 dating back 1900+ (check options). Under advanced search options you can select moment tensor, phase data etc. Output as csv: http://earthquake.usgs.gov/earthquakes/map/
ISC-GEM (International Seismological Centre) Global Instrumental Earthquake Catalogue magnitude 5.5 or larger as csv: http://www.isc.ac.uk/iscgem/download.php
GFZ Geoforschungszentrum Potsdam GEOFON Program magnitude 3 or higher. HTML (max 1000 per page) or RSS (20 events) output: http://geofon.gfz-potsdam.de/eqinfo/form.php
Harvard CMT, Global Centroid Moment Tensor database. The database covers 1976 to about 6 months before the present: http://www.globalcmt.org/CMTsearch.html
Countries or regions:
Spain, Canaries: Well, you know that one: http://www.01.ign.es/ign/resources/volcanologia/txt/boletin_HIERRO.txt
Germany: Events located in Germany and adjacent areas. The specified time span must be shorter than 1000 days for German events or shorter than 400 days for all events analysed by the BGR. Output is kind of pdf (?), no space between numbers and units…such a pain…: http://www.szgrf.bgr.de/seisevents.html
Local earthquakes registered by the seismic station Bensberg: http://www.seismo.uni-koeln.de/catalog/2013.htm
Belgium: Earthquakes in and adjacent areas of the last 6 months by the Royal Observatory of Belgium: http://seismologie.be/index.php?LANG=EN&CNT=BE&LEVEL=0 . A complete catalogue of events since 1900 can be requested by mail!
Switzerland: The SED provides a html list of recent local earthquakes of all magnitudes: http://www.seismo.ethz.ch/eq/latest/index?time=utc
Britain: Earthquakes around the British Isles of the past 50 days: http://www.earthquakes.bgs.ac.uk/earthquakes/recent_uk_events.html
Czech Republic: Catalogs of regional seismic events recorded by the Czech Regional Seismological Network from 1976. Output as txt. http://www.czechgeo.cz/en/gfu-catalog/?do=processYear
Iceland: And the classic: http://hraun.vedur.is/ja/viku/
Italy: Custom search of all (?) magnitudes. Output as googlemap, csv, kml: http://iside.rm.ingv.it/iside/standard/result.jsp?rst=1&page=EVENTS
Italy (Vesuv, Ischia and Campi Flegrei): Osservatorio Vesuviano Sezione di Napoli dell’Istituto Nazionale di Geofisica e Vulcanologia. Output as map and html. Just noticed the 3D Applet, neat!
Italy (Sicily), INGV:
Regional earthquakes since 1999. Unfortunately they come in chunks of 15 earthquakes per page, that is hard work to copy to txt. Cite as: Gruppo Analisi Dati Sismici, 2013. Catalogo dei terremoti della Sicilia Orientale – Calabria Meridionale (1999-2011). INGV, Catania: http://www.ct.ingv.it/ufs/analisti/catalogolist.php
France and more: GeoAzur, output of seismic query will be sent by email. http://websismo.unice.fr/DataSismo_Acces_Donnees.php?lang=FR
Greece: Institute for Geodynamics, web based output of earthquakes since 2008 and google map: http://bbnet.gein.noa.gr/HL/database
and historic earthquake (magnitude 2.5 or higher) catalogues since 1628 BC: http://www.gein.noa.gr/services/cat.html
Turkey: Bogazici University, Kandilli Observatory and Earthquake Research Institute (Koeri), National Earthquake Monitoring Center (NEMC) provide a list of last 6 weeks in Turkey in html or export to Google maps: http://www.koeri.boun.edu.tr/scripts/lasteq.asp
Azores: The Centro de Vulcanologia e Avaliação de Riscos Geológicos / Universidade dos Açores unfortunately only provides a Google map without depth information as far as I can see: http://www.cvarg.azores.gov.pt/paginas/sismicidade.aspx
Portugal with Azores and Madeira: Fortunately,
Instituto Português do Mar e da Atmosfera (IPMA) does a better job. They provide earthquake data from 1998: http://www.ipma.pt/en/geofisica/sismologia/
USA, Pacific North-West. PNSN Historic catalog 1793 to present. Searchable from 1976 with magnitudes between -2 and 9. Output as CSV (max 10000): http://www.pnsn.org/earthquakes/historic-catalog
USA, Alaska. The Alaska Volcano Observatory maintains a database of volcano earthquakes located since October 1989. Request size is limited to a few thousand per search. Exportable as txt, kml and other formats: http://www.giseis.alaska.edu/Seis/EQ/event_request/index.php
Mexico. SSN Earthquake querie (magnitude above about 2) from 2006: http://184.108.40.206:8080/website/jsp/catalogo1.jsp and from 1998 to 2005: http://220.127.116.11:8080/website/jsp/catalogo2.jsp
Colombia: Servicio Geológico Colombiano, Boletines de sismicidad by month or semester from 1993 as pdf: http://seisan.ingeominas.gov.co/RSNC/boletines/
Guatemala: Insivumeh´s map and table of earthquakes of the last 24 hours: http://www.insivumeh.gob.gt/geofisica/sismologia/sismos24horas.pdf and boletin 2012 as pdf: http://www.insivumeh.gob.gt/geofisica/sismologia/boletin_sismologico_2012.pdf
Chile. CSN earthquake list per day above about magnitude 2: http://www.sismologia.cl/
Russia, Kamchatka: Export local quakes as txt, kml, csv or xml: http://www.emsd.ru/ts/
Final catalogue of the geophysical service RAS for older Kamchatka events: http://quakekam.emsd.ru/
Australia: Australian Government Geoscience Australia. Earthquakes located in Australia and world with magnitude 1.3 or higher. Output as html (maximal 5000 events), csv, kml, xls: http://www.ga.gov.au/earthquakes/searchQuake.do
New Zealand: Geonet local quake search. Export as map, csv or kml. http://magma.geonet.org.nz/quakesearch/
New Caledonia: Nouvelle-Calédonie (New Caledonia) Sismological Network, mainly covering the surrounding pazific Islands (like Vanuatu, Tonga, Loyalty Is. etc.) up to parts of Indonesia, Australia and New Zealand: http://www.seisme.nc/index.php?option=com_alertes&view=alertes&Itemid=185&lang=en and Java applet with more detailed information: http://seisan.ird.nc/
Japan: Japan University Network Earthquake Catalog with text files per month from
1985 to 1998:
The BRI strong motion database also contains additional information like waveforms and response spectra: http://smo.kenken.go.jp/smdb
NIED Japan strong-motion Seismograph Networks earthquake search: http://www.kyoshin.bosai.go.jp/kyoshin/search/index_en.html
Philipines: Philvolc´s (Philippine Institute of Volcanology and Seismology) earthquake boletin has a list of the last 2 years on this site: http://www.phivolcs.dost.gov.ph/html/update_SOEPD/EQLatest.html
Now it´s your turn! Hope you will join the hunt! 🙂
Update: Post updated with new links.