Documentation

Details: Category: datasets

Main publications documenting the G-DIP dataset's rationale and construction

Basili R., Tiberti M.M. (2025). Global distribution of earthquake-fault dip angles. Geophysical Journal International (under review).

Definition of the G-DIP table attributes. These attributes are the same in the distributed file and WFS service.
Field	Variable	Unit	Description
GDipID	String	n.a.	Identifier of the earthquake event in the GDIP dataset. Ordinal with leading zeroes.
SourceTab	String	n.a.	Name of the source dataset.
CMTEvent	String	n.a.	Identifier of the earthquake in the GCMT database.
SRCMODID	String	n.a.	Identifier of the earthquake in the SRCMOD database.
EventDate	Date	n.a.	Date of the earthquake event in the format DD/MM/YYYY.
Location	String	n.a.	Geographic name of the region where the earthquake occurred.
Mw	Float	scalar	Moment magnitude of the earthquake.
Lat	Float	degrees	Latitude of the earthquake epicentre, datum WGS84, positive North.
Lon	Float	degrees	Longitude of the earthquake epicentre, datum WGS84, positive East.
Depth	Float	km	Depth of the earthquake hypocentre, positive down.
Plane	String	n.a.	One-letter code that identifies the selected GCMT nodal plane. It can take the values “A” or “B”, corresponding to the identifier in the GCMT catalogue, or “-“, for not determined (null).
Setting	String	n.a.	Two-letter code that classifies the tectonic setting of the earthquake. It can take the values “CR” for crustal earthquakes and “SD” for subduction earthquakes.
CMTFaultType	String	n.a.	One-letter code that classifies the sense of movement of the selected GCMT nodal plane. Can take the values “N” for normal, “R” for reverse, “T” for transcurrent, or “-“ for not determined (null).
FLTFaultType	String	n.a.	One-letter code that classifies the sense of movement of the fault solution. Can take the values “N” for normal, “R” for reverse, “T” for transcurrent, or “-“ for not determined (null).
InfoCMT	Logical	n.a.	Logical value in the form Y/N for yes or no, indicating if the CMT information is present.
InfoFLT	Logical	n.a.	Logical value in the form Y/N for yes or no, indicating if the FLT information is present.
CMTStrike	Float	degrees	Value of the plane orientation in the CMT dataset, between 0-360° increasing clockwise from the north following the right-hand rule.
CMTDip	Float	degrees	Value of the plane inclination (dip angle) in the CMT dataset, between 0-90° increasing downward from the horizontal.
CMTRake	Float	degrees	Value of the slip vector orientation in the CMT dataset, between -180° and 180°, increasing counterclockwise from the horizontal.
FLTStrike	Float	degrees	Value of the plane orientation in the FLT dataset, between 0-360° increasing clockwise from the north following the right-hand rule.
FLTDip	Float	degrees	Value of the plane inclination (dip angle) in the FLT dataset, between 0-90° increasing downward from the horizontal.
FLTRake	Float	degrees	Value of the slip vector orientation in the FLT dataset, between -180° and 180°, increasing counterclockwise from the horizontal.
Duplicates	Integer	scalar	Total number of duplicates of the same earthquake.
DuplCMT	Integer	scalar	Number of duplicates of the same earthquake in the CMT dataset. A value of zero corresponds to an N in the InfoCMT column.
DuplFLT	Integer	scalar	Number of duplicates of the same earthquake in the FLT dataset. A value of zero corresponds to an N in the InfoFLT column.
Reference	String	n.a.	Citation of the study from which the determination of the dip angle comes from. See the relevant source dataset in column SourceTab for locating the full reference. For the “This work” dataset, the references are in the main text.

Deprecation warning

EDSF13 is considered outdated, and its publication is only maintained to ensure the reproducibility of scientific research. If you need a dataset in line with the latest knowledge about seismogenic sources in the European and Mediterranean areas, please use EFSM20.