Where possible, use {{M}} for reporting Earthquake magnitudes rather than subscripts, for example {{M|L}} instead of ML or M<sub>L</sub>. Subscripts are required in citations that already use templates and <math> markup is used when magnitudes are part of a larger mathematical expression.
As of March 2011, a total of six featured pictures have been given a WikiProject Earthquakes notice. Generally, featured pictures are of high-quality and among the most encyclopedic images Wikipedia has to offer.
In order to easily identify articles in need of attention, assessments have been implemented. These are generated using the optional class and importance parameters in the {{WP Earthquakes}} project banner on an article's talk page:
WikiProject Earthquakes articles by quality and importance
There are many catalogues and databases that can be used to provide information about earthquakes when writing/improving articles. Some of the more important are listed here together with explanatory notes including how to use them, where that is not obvious.
ISC-GEM was created by the International Seismological Centre to provide a reliable global reference catalogue for seismologists for earthquake in the instrumental era (from 1904). To access the catalogue, click on the link provided and download the spreadsheet – the current version is v.7.0 and covers events from 1904–2016. The first 93 lines contain information about citing the catalogue, the meaning of the fields used, information about updates etc.
ANSS The Advanced National Seismic System (ANSS) Comprehensive Catalog was created by the USGS and other members of ANSS to provide a repository for data from the participating organisations. It can be searched online using the link provided. This link shows the data availability for each organisation – note that this includes the ISC-GEM catalogue. Covers global earthquakes from 1901 onwards and US earthquakes from 1638.
Catalog of Damaging Earthquakes in the World (Through 2016) – Originally created by Tokuji Utsu, now maintained by the International Institute of Seismology and Earthquakes in Japan. This online searchable database covers significant global earthquakes from 3000 B.C.
PAGER-CAT The Prompt Assessment of Global Earthquakes for Response (PAGER) catalog combines several existing global catalogs in an effort to provide reliable information about each earthquake’s source and its effect. It covers large earthquakes from 1900 to 2008 and is periodically updated. It provides not only earthquake parameters but also information about casualties, number of homeless etc. It can be downloaded using the link provided. You may need to reformat the "date" column if the content appears as hashes. Don't forget to look at the associated readme file as the fields in the spreadsheet are not that easy to understand.
Catalogue of Strong Earthquakes in Italy 461 B.C. – 1997 and Mediterranean Area 760 B.C. – 1500 This online searchable database is based on a paper catalogue published in 1995 by Boschi et al. as "Catalogo dei Forti Terremoti in ltalia dal 461 a.C. al 1980" (known as CFT 1 for short). Later improved and updated versions have been published and from CFTI4 they have been available online. Much of the detailed commentary is in Italian, but much of the higher level parts of the website can be viewed in English. Searching for a particular event by date gives a list and clicking on the event of choice gives a link to an "Earthquake page", dedicated to that particular event. An icon in the form of a page of text on the left hand side labelled "Comm." leads to the detailed pages on the event. Note that the magnitude of most historical earthquakes is given as Me, which stands for "equivalent magnitude", which is an estimate of the moment magnitude based on observed shaking intensities. This catalogue is also very useful for earthquakes in the Mediterranean area before 1501.
The SHARE European Earthquake Catalogue (SHEEC) 1000–1899 This online cataloque, part of the Seismic Hazard Harmonization in Europe (SHARE) initiative by the European Union, covers Europe, broadly defined, including Iceland and most of the Mediterranean Sea. The equivalent catalogue covering more recent events (SHEEC 1900–2006) is available for download as a spreadsheet here.
Earthquake Intensity Database 1638 – 1985 This NOAA database of intensities and other earthquake information mainly from the US, its borders and territories, can be downloaded using the link provided. Despite the description provided at the link, the organisation of this database remains opaque.
The Kandilli Observatory and Earthquake Research Institute Regional Earthquake – Tsuanmi Monitoring Centre The catalogue run by the Kandilli Observatory and Earthquake Research Institute (KOERI) provides a searchable online database for earthquakes in Turkey from 1900 onwards, providing times, locations, depths and magnitudes. Additionally at this link there is a list of large earthquakes from 1900 to 2014 (currently), with maximum intensities, and casualty information. At this link is a list of significant historical earthquakes from B.C. 222 to A.D. 1899, with epicentres, maximum intensities and in some cases casualty information.
European Databases of Seismogenic Faults (EDSF) This online resource operates under the auspices of the EPOS TCS-Seismology work program, particularly those of the EFEHR Consortium, and considers the principles expressed by the EPOS Data Policy. EDSF distributes services for data about seismogenic faulting proposed by the scientific community or solicited to the scientific community or stemming from project partnerships that involved the use or development of the EDSF installation itself.
