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SFIT - Documentation

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Category: datasets

 

Definition of the SFIT table attributes. These attributes are the same in the distributed file and WFS service.

Point Data: This layer includes coseismic rupture observation points related to different surface faulting earthquakes. Each point includes detailed information about the coseismic feature: its location, typology, geometry, type and size of movement, a brief description, related images, and the data source. Each point is linked through a code to the rupture line to which it belongs. Where specific attributes were not reported in the original datasets, the corresponding fields are intentionally left empty.

Field

Variable

Unit

Description

ID_POINT

integer

n.a.

identifier of the point.

ID_INTEROPERABILITY

n.a.

 

ID_ETQ

string

n.a.

earthquake reference code with date and time from CPTI https://doi.org/10.13127/cpti/cpti15.4

NAME_ETQ

string

n.a.

common name of the earthquake.

LAT_ETQ

double

degrees

epicenter Latitude (DD, WGS84) from CPTI https://doi.org/10.13127/cpti/cpti15.4

LON_ETQ

double

degrees

epicenter Longitude (DD, WGS84) from CPTI https://doi.org/10.13127/cpti/cpti15.4

MAG_ETQ

double

n.a.

moment magnitude from CPTI https://doi.org/10.13127/cpti/cpti15.4

Kinematics_ETQ

(short name: K_ETQ)

string

n.a.

Earthquake Kinematics: N (normal), T (reverse), SR (dextral strike-slip), SL (sinistral strike-slip), NSR (Normal with Right Lateral component) etc.; generally from focal mechanisms.

ID_POINT_O

integer

n.a.

identifier of the original point in the data source. When missing or not in a suitable format, it is assigned by the compilers.

LAT_POINT

double

degrees

point Latitude (DD, WGS84).

LON_POINT

double

degrees

point Longitude (DD, WGS84).

ELEV_POINT

double

meter

altitude of the point a.s.l.

OBS_TYPE

string

n.a.

coseismic rupture, coseismic warping, coseismic liquefaction, panoramic view (when the point represents the location from where a panoramic photo is taken), Dummy point (artefact to draw a rupture line with no observation points).

Hangingwall Substratum

(short name: HW_Subs)

string

n.a.

description of the type of hangingwall substratum – when, in the original dataset, it is not specifically defined for the hangingwall, we use the generic field substratum.

Footwall Substratum

(short name: FW_ Subs)

string

n.a.

description of the type of footwall substratum – when, in the original dataset, it is not specifically defined for the footwall, we use the generic field substratum.

Strike

double

degrees

direction of the rupture (right-hand rule).

Dip Angle

double

degrees

angle of dip along the dip direction/perpendicular to the strike.

Dip Direction

(short name: Dip Dir)

double

degrees

 

measured along the dip direction of the rupture.

Length (m)

(short name: Len_m)

double

meter

length of the rupture.

Kinematics

(short name: K)

string

n.a.

Kinematics of the rupture: O (opening), N (normal), T (reverse), SR (dextral strike-slip), SL (sinistral strike-slip), NSR (Normal with Right Lateral component), etc.

Throw (cm)

(short name: Th_cm)

double

centimeter

average vertical separation between hanging wall and footwall.

Throw_min (cm)

 (short name: Th min_cm)

double

centimeter

minimum vertical separation between hanging wall and footwall.

Throw_max (cm)

(short name: Th max_cm)

double

centimeter

maximum vertical separation between hanging wall and footwall.

Lateral offset (cm)

(short name: LOf_cm)

double

centimeter

average lateral separation along the strike.

Lateral offset_min (cm)

(short name: LOf min_cm)

double

centimeter

minimum lateral separation along the strike.

Lateral offset_max (cm)

(short name: LOf max_cm)

double

centimeter

minimum lateral separation along the strike.

Opening (cm)

(short name: O_cm)

double

centimeter

average horizontal separation (opening) between the two sides of the rupture.

Opening_min (cm)

(short name: O min_cm)

double

centimeter

minimum horizontal separation (opening) between the two sides of the rupture.

Opening_max (cm)

(short name: O max_cm)

double

centimeter

minimum horizontal separation (opening) between the two sides of the rupture.

Vertical Warping (cm)

(short name: VWarp_cm)

double

centimeter

average height of the warp.

Vertical Warping_min (cm)

(short name: VWarp min)

double

centimeter

minimum height of the warp.

Vertical Warping_max (cm)

(short name: VWarp max)

double

centimeter

maximum height of the warp.

Horizontal Warping (cm)

(short name: HWarp_cm)

double

centimeter

average measure of the entity of the warp.

Horizontal Warping_min (cm)

(short name: HWarp min)

double

centimeter

minimum measure of the entity of the warp.

Horizontal Warping_max (cm)

(short name: HWarp max)

double

centimeter

maximum measure of the entity of the warp.

Net slip (cm)

(short name: Nslip_cm)

double

centimeter

net slip along the slip vector.

Slip Vector Trend

(short name: SVe_Trend)

double

degrees

direction of the slip lineation, measured clockwise with respect to the north (range 0°-360°).

Slip Vector Plunge

(short name: SVe_Plunge)

double

degrees

plunge of the slip lineation in degrees, measured with respect to the horizontal (range 0°-90°).

Rake

double

degrees

angle of the slip lineation on the fault plane measured in degrees (in the 0°-180° range)

Fracture Zone Width

(short name: FZ_Width)

double

meter

width of the fracture zone across the average fault strike at the point.

Start/End/Middle/Central point

(short name: S_E_M_C_pt)

string

n.a.

definition of point as start (S), end (E), Middle (M), Central (C) of the rupture line (ID_LINE_OR).

idTrace

integer

n.a.

identification number of the original line including the point.

ID_PHOTO

string

n.a.

labels of the photos related to the point from the data source. 

PHOTO_Credits
(short name: PH_CRS)

string

n.a.

additional information on the observation point.

NOTE

string

n.a.

additional information on the observation point.

References

(short name: REF)

string

n.a.

citation of the source of the data (doi).

Author_ranking

(short name: Ranking)

integer

n.a.

ranking code for the significance of the feature according to the original authors: 1) principal fault ruptures, representing the surface expression of the fault responsible for the earthquake and including all the ruptures along faults that are connected to the principal fault at depth; 2) unpredictable distributed ruptures, ruptures also distant not necessarily connected to the principal fault; 3) triggered rupture along a pre-existing fault that is not directly connected to the principal fault, or along a shallow structure that is located within the coseismic deformation area; 4) ground shaking or shaking/gravity-induced rupture. Blank when no interpretation from the data source is provided. The ranking categories mostly follow the rationale defined in SURE 2.0 database (doi.org/10.1038/s41597-022-01835-z).

 

Definition of the SFIT table attributes. These attributes are the same in the distributed file and WFS service.

Line Data: The layer displays the traces of the surface ruptures associated with the earthquake. Each trace may contain information about the geometrical and kinematics characteristics, and the data source. Where specific attributes were not reported in the original datasets, the corresponding fields are intentionally left empty. Traces may include one or multiple observation points and can be represented in different ways depending on the original data available in the data source. 

Field

Variable

Unit

Description

ID_LINE

integer

n.a.

identifier of the rupture line.

ID_INTEROPERABILITY

  

n.a.

  

ID_ETQ

string

n.a.

earthquake reference code with date and time from CPTI https://doi.org/10.13127/cpti/cpti15.4

NAME_ETQ

string

n.a.

common name of the earthquake.

LAT_ETQ

double

degrees

epicenter Latitude (DD, WGS84) from CPTI https://doi.org/10.13127/cpti/cpti15.4

LON_ETQ

double

degrees

epicenter Longitude (DD, WGS84)  from CPTI https://doi.org/10.13127/cpti/cpti15.4  

MAG_ETQ

double

n.a.

moment magnitude from CPTI https://doi.org/10.13127/cpti/cpti15.4

K_ETQ

string

n.a.

Earthquake Kinematics: N (normal), T (reverse), SR (dextral strike-slip), SL (sinistral strike-slip), NSR (Normal with Right Lateral component) etc.; generally from focal mechanisms.

idTrace

integer

n.a.

identifier of the original rupture line in the data source. When missing or not in a suitable format, it is assigned by the compilers.

OBS_TYPE

string

n.a.

coseismic rupture, coseismic warping, coseismic liquefaction.

Length (m)

(short name: Len_m)

double

meter

length of the line.

Orientation

(short name: Orient)

integer

degrees

average strike of the trace, in degrees (right-hand rule).

Kinematics

(short name: K)

string

n.a.

Kinematics of the rupture: O (opening), N (normal), T (reverse), SR (dextral strike-slip), SL (sinistral strike-slip), NSR (Normal with Right Lateral component), etc. 

Downthrown side 

(short name: Downside)

string

n.a.

cardinal direction of the downthrown side of the rupture.

Vertical Offset (cm)

(short name: VOf_cm)

double

centimeter

average vertical separation between hanging wall and footwall.

Vertical Offset_min (cm)

(short name: VOf min_cm)

double

centimeter

minimum vertical separation between hanging wall and footwall.

Vertical Offset_max (cm)

(short name: VOf max_cm)

double

centimeter

maximum vertical separation between hanging wall and footwall.

Lateral Offset (cm)

(short name: LOf_cm)

double

centimeter

average lateral separation along the strike. 

Lateral Offset_min (cm)

(short name: LOf min_cm)

double

centimeter

minimum lateral separation along the strike.

Lateral Offset_max (cm)

(short name: LOf max_cm)

double

centimeter

maximum lateral separation along the strike.

Opening (cm)

(short name: O_cm)

double

centimeter

average horizontal separation (opening) between the two sides of the rupture.

Opening_min (cm)

(short name: O min_cm)

double

centimeter

minimum horizontal separation (opening) between the two sides of the rupture.

Opening_max (cm)

(short name: O max_cm)

double

centimeter

maximum horizontal separation (opening) between the two sides of the rupture.

LAT_Central_POINT

(short name: LAT_C_PT)

double

degrees

latitude of the central point of the line (decimal degrees, WGS84).

LON_Central_POINT

(short name: LON_C_PT)

double

degrees

longitude of the central point of the line (decimal degrees, WGS84).

ID_Start POINT

(short name: ID_S_PT)

integer

n.a.

original identifier of starting point of the line identifier.

ID_Middle POINT

(short name: ID_M_ PT)

integer

n.a.

original identifier of middle point of the line identifier.

ID_Central POINT

(short name: ID_C_PT)

integer

n.a.

original identifier of central point of the line identifier.

ID_End POINT 

(short name:  ID_E_PT)

integer

n.a.

original identifier of ending point of the line identifier.

Uncertainty

(short name: Unc)

string

n.a.

observed or inferred line.

Note

string

n.a.

additional information on the line.

References

(short name: REF)

string

n.a.

citation of the source of the data (doi).

Author_ranking

(short name: Ranking)

integer

n.a.

ranking code for the significance of the feature according to the original authors (1) principal fault ruptures, representing the surface expression of the fault responsible for the earthquake and including all the ruptures along faults that are connected to the principal fault at depth; 2) unpredictable distributed ruptures, ruptures also distant not necessarily connected to the principal fault; 3) triggered rupture along a pre-existing fault that is not directly connected to the principal fault, or along a shallow structure that is located within the coseismic deformation area; 4) ground shaking or shaking/gravity-induced rupture. Blank when no interpretation from the data source is provided.  The ranking categories mostly follow the rationale defined in SURE 2.0 database (doi.org/10.1038/s41597-022-01835-z).