Seismogenic Fault Databases for Science and Engineering


Earthquake geology terms

There are 13 entries in this glossary.
Search for glossary terms (regular expression allowed)


Term Main definition

In plate tectonics a subduction zone is a region where one plate (the lower plate or slab) moves under another (the upper plate) and sinks into the mantle beneath it. This process results in a convergent movement of the two involved plates which is known to generate earthquake ruptures of different types. These ruptures are classified according to the part of the subduction zone where they occur. Interface ruptures are those that occur at the contact between the two plates; intraslab ruptures are those that occur within the slab; outer-rise ruptures also occur within the slab but in the region in front of the trench or the tip of the accretionary wedge; and splay ruptures which are those that propagate from the slab interface into the upper plate.

Author - Super User
Hits - 110
Synonyms - Subduction zone Subduction system
Seismogenic fault

A fault that is capable of generating earthquakes. 


Author - Super User
Hits - 238
Synonyms - Seismogenic source seismogenic fault seismogenic source
Recurrence interval

The average time span between two comparably large earthquakes on a particular seismogenic fault.

Author - Super User
Hits - 157

An event or process possibly detected by geological/geophysical tools and analyses that occurs between two significant earthquakes.

Author - Super User
Hits - 131
Instrumental seismicity

The recent and ongoing record of earthquakes that have occurred since the availability of modern-era seismometers (i.e. since the XXth century).

Author - Super User
Hits - 212
Synonyms - instrumental seismicity
Historical seismicity

The historical record of ca. pre-XXth century earthquakes that have been parameterized in specific historical catalogues.

Author - Super User
Hits - 154
Fault scarp

The brittle result of a fault that ruptures the ground surface.

Author - Super User
Hits - 299
Synonyms - fault scarp Fault scarps fault scarps

A fault is a fracture along which the blocks of the Earth's crust on either side have moved relative to one another parallel to the fracture.

Author - Super User
Hits - 115

The angle by which a fault is more or less steep from the top towards the bottom.

Author - Super User
Hits - 143
Depth min and max

The depth range that includes the location of the causative (i.e. seismogenic) fault of an earthquake – either a particular one or an expected/forecasted one – within the crust (or below depending on cases).

Author - Super User
Hits - 159
Synonyms - min depth max depth

An event or process detected by geological/geophysical tools and analyses that is directly associated with earthquake activity.

Author - Super User
Hits - 321
Synonyms - coseismic co-seismic Co-seismic

An event or process detected by geological/geophysical tools and analyses that is apparently not accompanied by earthquake activity.

Author - Super User
Hits - 140
Active fault

An active fault is a fault that has slipped during the present seismotectonic regime and is therefore likely to have renewed displacement in the future.

Author - Super User
Hits - 199
Synonyms - active faults active fault

EU logoThe work presented in this website has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreements N° 676564 and N° 730900.

Disclaimer: the content of this website reflects only the author’s view and the Commission is not responsible for any use that may be made of the information it contains.

Logo IngvSEISMOFAULTS.EU website and web services are developed, maintained and hosted by Istituto Nazionale di Geofisica e Vulcanologia (INGV)

Creative Commons

Software employed

Cookie consent

Please, accept cookies to continue on Seismofaults

INGV logo