- Details
- Category: datasets
Main publications documenting the EFSM20 datasets' rationale and construction
- Basili, R., Danciu, L., Beauval, C., Sesetyan, K., Vilanova, S. P., Adamia, S., Arroucau, P., Atanackov, J., Baize, S., Canora, C., Caputo, R., Carafa, M. M. C., Cushing, E. M., Custódio, S., Demircioglu Tumsa, M. B., Duarte, J. C., Ganas, A., García-Mayordomo, J., Gómez de la Peña, L., Gràcia, E., Jamšek Rupnik, P., Jomard, H., Kastelic, V., Maesano, F. E., Martín-Banda, R., Martínez-Loriente, S., Neres, M., Perea, H., Šket Motnikar, B., Tiberti, M. M., Tsereteli, N., Tsironi, V., Vallone, R., Vanneste, K., Zupančič, P., and Giardini, D. (2024). The European Fault-Source Model 2020 (EFSM20): geologic input data for the European Seismic Hazard Model 2020, Nat. Hazards Earth Syst. Sci., https://doi.org/10.5194/nhess-24-3945-2024
- Danciu, L., Giardini, D., Weatherill, G., Basili, R., Nandan, S., Rovida, A., et al. (2024). The 2020 European Seismic Hazard Model: overview and results. Nat. Hazards Earth Syst. Sci. 24, 3049–3073. https://doi.org/10.5194/nhess-24-3049-2024
- Danciu, L., Weatherill, G., Rovida, A., Basili, R., Bard, P.-Y., Beauval, C., Nandan, S., Pagani, M., Crowley, H., Sesetyan, K., Villanova, S., Reyes, C., Marti, M., Cotton, F., Wiemer, S., & Giardini, D. (2022). The 2020 European Seismic Hazard Model: Milestones and Lessons Learned. In Springer Proceedings in Earth and Environmental Sciences (pp. 3–25). Springer International Publishing. https://doi.org/10.1007/978-3-031-15104-0_1
- Danciu, L., Nandan, S., Reyes, C., Basili, R., Weatherill, G., Beauval, C., Rovida, A., Vilanova, S., Sesetyan, K., Bard, P.-Y., Cotton, F., Wiemer, S., & Giardini, D. (2021). The 2020 update of the European Seismic Hazard Model - ESHM20: Model Overview. EFEHR European Facilities of Earthquake Hazard and Risk. https://doi.org/10.12686/A15
- Basili, R., Danciu, L., Carafa, M. M. C., Kastelic, V., Maesano, F. E., Tiberti, M. M., Vallone, R., Gracia, E., Sesetyan, K., Atanackov, J., Sket-Motnikar, B., Zupančič, P., Vanneste, K., & Vilanova, S. (2020). Insights on the European Fault-Source Model (EFSM20) as input to the 2020 update of the European Seismic Hazard Model (ESHM20). Copernicus GmbH. https://doi.org/10.5194/egusphere-egu2020-7008
- SERA Deliverable D25.2 Updated databases of seismicity, faults, and strain rates for ESHM20.
The tables below summarize the content of the EFSM20 datasets. Table 1 and Table 2 list the files available for download and as web service. Tables A1, A2, A3, A4, A5, A6, and A7 list the attribute definitions of each file.
| Category | File name | Description | Parameters table link |
|---|---|---|---|
| Crustal Faults (CF) | EFSM20_CF_TOP | Trace of the fault plane upper edge. Polylines. | A1 |
| EFSM20_CF_BOT | Trace of the fault plane lower edge. Polylines. | A1 | |
| EFSM20_CF_MID | Trace of the fault plane middle line. Polylines. | A1 | |
| EFSM20_CF_PLD | Vertical projection of the inclined fault planes (in the local dip direction along strike) onto the ground surface. Polygons. | A1 | |
| EFSM20_CFDepths | Depth isolines (contours) of the fault planes, including top e bottom. Polylines. | A2 | |
| Subduction Systems (SS) | EFSM20_SlabDepths | Depth isolines (contours) representing the geometry of the top surface of the slab. Polylines. | A3 |
| EFSM20_SI_Parameters | Subduction Interface (SI) parameters. Polygons encompassing the SI area in map view. | A4 | |
| EFSM20_SI_Discretization | Subduction Interface (SI) discretized in areas spanning 1 km depth. Polygons encompassing each area in map view. | A5 | |
| EFSM20_SI_Realizations | Subduction Interface (SI) model realizations considering uncertainties. Polygons encompassing each area of the different realizations in map view. | A6 | |
| EFSM20_IS_Lattice | Intraslab (IS) model constituted by equally-spaced nodes sampling the crustal part of the slab volume. Points. | A7 |
| Category | File Name | Description |
| Crustal Faults (CF) | EFSM20_CFDepths ColorScaleCFDepths.sld |
Color-coded depth isolines of the fault planes, including the top and bottom. The spacing interval is 0.5 km. |
| EFSM20_CF_FaultTypes ColorScaleFaultTypes.sld |
Color-coded fault types: normal, reverse, right-lateral, left-lateral. | |
| EFSM20_CF_SlipRates ColorScaleSR.sld |
Color-coded slip rates. Log-linear separation scale. Four different layers for minimum, maximum, arithmetic mean (default), and geometric mean. | |
| EFSM20_CF_MaxMagnitude ColorScaleMw02.sld |
Color-coded maximum magnitude. Five different layers for the average (default), and the 2nd, 5th, 95th, and 98th percentiles. | |
| EFSM20_CF_MomentRates ColorScaleM0R.sld |
Color-coded moment rates. Log scale. Four different layers for minimum, maximum, arithmetic mean (default), and geometric mean. | |
| Subduction Systems (SS) | EFSM20_SlabDepths ColorScaleSlabDepths.sld |
Color-coded depth isolines of the top surface of the slab. Spacing interval is 1 km between 0-40 km and 10 km between 40-300 km.
|
| Field | Variable | Units | Description |
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20. |
| IDDS | Char(3) | n.a. | Number of the dataset linked to the file "DescriptionOfDatasets". |
| IDSource | Char(24) | n.a. | Identifier given in the original source, if available. |
| StrikeMin | Float | degrees | The minimum value of the fault orientation, between 0-360° increasing clockwise from the north following the right-hand rule. Recalculated from the reshaped fault trace. Rounded to the nearest integer. |
| StrikeAvg | Float | degrees | The average value of the fault orientation, between 0-360° increasing clockwise from the north following the right-hand rule. Recalculated from the reshaped fault trace. Rounded to the nearest integer. |
| StrikeMax | Float | degrees | The maximum value of the fault orientation, between 0-360° increasing clockwise from the north following the right-hand rule. Recalculated from the reshaped fault trace. Rounded to the nearest integer. |
| DipMin | Float | degrees | Minimum value of the dip angle, between 0-90° increasing downward from the horizontal. Rounded to the nearest integer. |
| DipAvg | Float | degrees | Average value of the dip angle, between 0-90° increasing downward from the horizontal. Rounded to the nearest integer. |
| DipMax | Float | degrees | Maximum value of the dip angle, between 0-90° increasing downward from the horizontal. Rounded to the nearest integer. |
| RakeMin | Float | degrees | Minimum value of the hanging-wall sense of movement between -180-180° increasing counterclockwise from the horizontal. Rounded to the nearest integer. |
| RakeAvg | Float | degrees | Average value of the hanging-wall sense of movement between -180-180° increasing counterclockwise from the horizontal. Rounded to the nearest integer. |
| RakeMax | Float | degrees | Maximum value of the hanging-wall sense of movement between -180-180° increasing counterclockwise from the horizontal. Rounded to the nearest integer. |
| MinDepth | Float | km | Value of the minimum depth of the fault, or depth of the upper edge, positive downward from sea level. Rounded to the half kilometer. |
| MaxDepth | Float | km | Value of the maximum depth of the fault, or depth of the lower edge, positive downward from sea level. Rounded to the half kilometer. |
| Length | Float | km | Length of the fault measured along the trace of the upper edge. Rounded to the 1st decimal. |
| E2ELength | Float | km | End-to-end length of the fault, corresponding to the shortest distance between the farthest endpoints on the trace of the upper edge. Rounded to the 1st decimal. |
| WidthMin | Float | km | Minimum value of the fault width, measured along the dip direction, as calculated from depth and maximum dip. Rounded to the 1st decimal. |
| WidthAvg | Float | km | Average value of the fault width, measured along the dip direction, as calculated from depth and average dip. Rounded to the 1st decimal. |
| WidthMax | Float | km | Maximum value of the fault width, measured along the dip direction, as calculated from depth and minimum dip. Rounded to the 1st decimal. |
| AreaMin | Float | km^2 | Minimum value of the fault area obtained by multiplying total length by width. Rounded to the nearest integer. |
| AreaAvg | Float | km^2 | Average value of the fault area obtained by multiplying total length by width. Rounded to the nearest integer. |
| AreaMax | Float | km^2 | Maximum value of the fault area obtained by multiplying total length by width. Rounded to the nearest integer. |
| SRMin | Float | mm/yr | Minimum value of the slip rate in mm/yr. Rounded to the 3rd decimal. |
| SRMax | Float | mm/yr | Maximum value of the slip rate in mm/yr. Rounded to the 3rd decimal. |
| SRAMean | Float | mm/yr | Aritmetic mean value of the slip rate in mm/yr. Rounded to the 3rd decimal. |
| SRGMean | Float | mm/yr | Geometric mean value of the slip rate in mm/yr. Rounded to the 3rd decimal. |
| Complex | Float | scalar | Index between 0-1 that indicates the level of complexity of the fault geometry. Rounded to the 4th decimal. |
| TopoAvg | Float | m | Average topographic elevation above the fault trace, positive upward from sea level. Rounded to the nearest integer. |
| MohoAvg | Float | km | Value of the average Moho depth below the fault trace, positive downward from sea level. Rounded to the half kilometer. |
| Mu | Float | GPa | Average shear modulus or rigidity. Fixed for coherence with fault scaling relations used to estimate maximum magnitude. |
| FaultType | Char(2) | n.a. | One-letter or two-letter code: R = reverse, N = normal, RL = right-lateral transcurrent, LL = left-lateral transcurrent. |
| FSLTecto | Char(3) | n.a. | Three-letter code: MAR = Mid-Atlantic Ridge; INT = interplate region; SCR = stable continental region. |
| FSLName | Char(24) | n.a. | Leonard2014_Interplate or Leonard2014_SCR |
| FSLSlip | Char(2) | n.a. | Two-letter code: DS = dip slip; SS = strike slip. |
| FSLDim | Char(1) | n.a. | One-letter code indicating which rupture dimension is used to estimate the maximum magnitude: L = length, W = width, A = area, D = displacement. |
| MwMaxP02 | Float | scalar | Value of 2nd percentile of the maximum moment magnitude distribution. Rounded to the 2nd decimal. |
| MwMaxP05 | Float | scalar | Value of 5th percentile of the maximum moment magnitude distribution. Rounded to the 2nd decimal. |
| MwMaxAvg | Float | scalar | Mean value of the maximum moment magnitude distribution. Rounded to the 2nd decimal. |
| MwMaxP95 | Float | scalar | Value of 95th percentile of the maximum moment magnitude distribution. Rounded to the 2nd decimal. |
| MwMaxP98 | Float | scalar | Value of 98th percentile of the maximum moment magnitude distribution. Rounded to the 2nd decimal. |
| M0RMin | Float | Nm | Minimum value of the moment rate of the fault. Logarithmic, base 10, value rounded to the 4th decimal. |
| M0RMax | Float | Nm | Maximum value of the moment rate of the fault. Logarithmic, base 10, value rounded to the 4th decimal. |
| M0RAMean | Float | Nm | Arithmetic mean of the moment rate of the fault. Logarithmic, base 10, value rounded to the 4th decimal. |
| M0RGMean | Float | Nm | Geometric mean of the moment rate of the fault. Logarithmic, base 10, value rounded to the 4th decimal. |
| Field | Variable | Units | Description |
|---|---|---|---|
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20 |
| IDDS | Char(3) | n.a. | Number of the dataset linked to the file "DescriptionOfDatasets". |
| IDSource | Char(24) | n.a. | Identifier given in the original source, if available. |
| IDContour | Integer | n.a. | Ordinal that identifies the number of the depth isoline within each crustal fault source. |
| Depth | Float | km | Depth value of the isoline, positive downward from sea level. The isoline spacing is fixed at 0.5 km depth. The top and bottom lines of the fault plane are included. |
| Field | Variable | Units | Description |
|---|---|---|---|
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20 |
| SlabName | Char(24) | n.a. | Long name of the subduction system (Gibraltar Arc, Calabrian Arc, Hellenic Arc, Cyprus Arc). |
| ShortName | Char(3) | n.a. | Short name of the subduction system (GiA, CaA, HeA, CyA). |
| IDDS | Char (3) | n.a. | Number of the dataset linked to the file "DescriptionOfDatasets". |
| IDSource | Char(24) | n.a. | Identifier given in the original source |
| IDContour | Char (5) | n.a. | Identifier of the individual depth isoline coded as follow: three-letter code of the model name, followed by an ordinal including leading zeroes. |
| Depth | Float | km | Depth value of the isoline, positive downward from sea level. The isoline spacing is fixed at 1 km up to 40 km depth, and at 10 km below. The deepest slab isoline is fixed at 300 km depth. |
| Field | Variable | Units | Description |
|---|---|---|---|
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20. |
| SlabName | Char(24) | n.a. | Long name of the subduction system (Gibraltar Arc, Calabrian Arc, Hellenic Arc, Cyprus Arc). |
| ShortName | Char(3) | n.a. | Short name of the subduction system (GiA, CaA, HeA, CyA). |
| IDDS | Char(3) | n.a. | Number of the dataset linked to the file "DescriptionOfDatasets". |
| IDSource | Char(24) | n.a. | Identifier given in the original source |
| USD1 | Float | km | Value of the minimum upper seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| USD2 | Float | km | Value of the intermediate upper seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| USD3 | Float | km | Value of the maximum upper seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| LSD1 | Float | km | Value of the minimum lower seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| LSD2 | Float | km | Value of the intermediate lower seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| LSD3 | Float | km | Value of the maximum lower seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| ConvRate1 | Float | mm/yr | Value of the lowest estimate of the convergence rate. Rounded to the 2nd decimal. |
| ConvRate2 | Float | mm/yr | Value of the average estimate of the convergence rate. Rounded to the 2nd decimal. |
| ConvRate3 | Float | mm/yr | Value of the highest estimate of the convergence rate. Rounded to the 2nd decimal. |
| ConvAz1 | Float | degrees | Lowest azimuth value of the upper-plate and lower-plate convergence direction between 0-180° increasing clockwise from the North. Rounded to the nearest integer. |
| ConvAz2 | Float | degrees | Average azimuth value of the upper-plate and lower-plate convergence direction between 0-180° increasing clockwise from the North. Rounded to the nearest integer. |
| ConvAz3 | Float | degrees | Highest azimuth value of the upper-plate and lower-plate convergence direction between 0-180° increasing clockwise from the North. Rounded to the nearest integer. |
| TopoMin | Float | km | Minimum topobathymetric elevation above the subduction interface area. Rounded to the 1st decimal. |
| TopoAvg | Float | km | Average topobathymetric elevation above the subduction interface area. Rounded to the 1st decimal. |
| TopoMax | Float | km | Maximum topobathymetric elevation above the subduction interface area. Rounded to the 1st decimal. |
| MohoMin | Float | km | Value of the minimum Moho depth below the slab interface, positive downward from sea level, as measured in the shallowest region of the slab interface. Rounded to the nearest integer. |
| MohoAvg | Float | km | Value of the average Moho depth below the slab interface, positive downward from sea level, as measured in the shallowest region of the slab interface. Rounded to the nearest integer. |
| MohoMax | Float | km | Value of the maximum Moho depth below the slab interface, positive downward from sea level, as measured in the shallowest region of the slab interface. Rounded to the nearest integer. |
| LengthMin | Float | km | Length of the shortest depth isoline within the slab interface. Rounded to the nearest integer. |
| LengthMax | Float | km | Length of the longest depth isoline within the slab interface. Rounded to the nearest integer. |
| AreaInMap | Float | sq km | Total area occupied by the vertical projection onto the ground surface of the slab interface. |
| AreaDD | Float | sq km | Total area of the slab-interface dipping surface, comprised between the uppermost and lowermost depths. Rounded to the nearest integer. |
| WidthAvg | Float | km | Average width of the slab-interface surface measured along the dip-direction (orthogonal to strike). Rounded to the nearest integer. |
| DipAvg | Float | degrees | Average dip angle (slope) of the slab-interface surface measured along the dip-direction (orthogonal to strike). Rounded to the nearest integer. |
| Field | Variable | Units | Description |
|---|---|---|---|
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20. |
| SlabName | Char(24) | n.a. | Long name of the subduction system (Gibraltar Arc, Calabrian Arc, Hellenic Arc, Cyprus Arc). |
| ShortName | Char(3) | n.a. | Short name of the subduction system (GiA, CaA, HeA, CyA). |
| IDDS | Char(3) | n.a. | Number of the dataset linked to the file "DescriptionOfDatasets". |
| IDSource | Char(24) | n.a. | Identifier given in the original source |
| IDInterval | Char (5) | n.a. | Identifier of the individual depth interval coded as follow: three-letter code of the model name, followed by an ordinal including leading zeroes. |
| DepthHi | Float | km | Value of the upper seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| DepthLo | Float | km | Value of the lower seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| LengthHi | Float | km | Length of the upper isoline of the depth interval. Rounded to the nearest integer. |
| LengthLo | Float | km | Length of the lower isoline of the depth interval. Rounded to the nearest integer. |
| LengthAvg | Float | km | Average length of the upper and lower isolines of the depth interval. Rounded to the nearest integer. |
| AreaInMap | Float | sq km | Total area occupied by the vertical projection onto the ground surface of the slab interface. |
| AreaDD | Float | sq km | Total area of the slab-interface dipping surface, comprised between the uppermost and lowermost depths. Rounded to the nearest integer. |
| WidthAvg | Float | km | Average width of the slab-interface surface measured along the dip-direction (orthogonal to strike). Rounded to the nearest integer. |
| DipAvg | Float | degrees | Average dip angle (slope) of the slab-interface surface measured along the dip-direction (orthogonal to strike). Rounded to the nearest integer. |
| TopoMin | Float | m | Minimum topo-bathymetric elevation above the subduction interface area. Rounded to the 1st decimal. |
| TopoAvg | Float | m | Average topo-bathymetric elevation above the subduction interface area. Rounded to the 1st decimal. |
| TopoMax | Float | m | Maximum topo-bathymetric elevation above the subduction interface area. Rounded to the 1st decimal. |
| MuPREM | Float | GPa | Shear modulus (or rigidity) at the depth interval of the slab discretization, as derived from Dziewonski and Anderson (1981). Rounded to the nearest integer. |
| MuSC19 | Float | GPa | Shear modulus (or rigidity) at the depth interval of the slab discretization, as derived from Scala et al. (2019). Rounded to the nearest integer. |
| MuBL99 | Float | GPa | Shear modulus (or rigidity) at the depth interval of the slab discretization, as derived from Bilek and Lay (1999). Rounded to the nearest integer. |
| MuSR19Min | Float | GPa | Shear modulus (or rigidity), - 1 standard deviation, at the depth interval of the slab discretization, as derived from Sallarèr and Ranero (2019). Rounded to the nearest integer. |
| MuSR19Avg | Float | GPa | Shear modulus (or rigidity) at the depth interval of the slab discretization, as derived from Sallarèr and Ranero (2019). Rounded to the nearest integer. |
| MuSR19Max | Float | GPa | Shear modulus (or rigidity), + 1 standard deviation, at the depth interval of the slab discretization as derived from Sallarèr and Ranero (2019). Rounded to the nearest integer. |
| Field | Variable | Units | Description |
|---|---|---|---|
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20. |
| SlabName | Char(24) | n.a. | Long name of the subduction system (Gibraltar Arc, Calabrian Arc, Hellenic Arc, Cyprus Arc). |
| ShortName | Char(3) | n.a. | Short name of the subduction system (GiA, CaA, HeA, CyA). |
| ModelCode | Char(5) | n.a. | Five-character code formed by the ShortName string followed by two numbers (1-2-3) representing the combination of the USD and LSD values. This code also identifies a different polygon in the map, corresponding to the slab interface area enclosed between the two different depth isolines. |
| USD | Float | km | Value of the upper seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| LSD | Float | km | Value of the lower seismogenic depth of the slab interface, positive downward from sea level. Rounded to the nearest integer. |
| TotalArea | Float | sq km | Value of the slab interface area of the model realization. Rounded to the nearest integer. |
| Mu1 | Float | GPa | Shear modulus (or rigidity) based on the depth range of the slab interface realization (weighted average of the expected values -1 s.d.). Rounded to the nearest integer. |
| Mu2 | Float | GPa | Shear modulus (or rigidity) based on the depth range of the slab interface realization (weighted average of the expected values). Rounded to the nearest integer. |
| Mu3 | Float | GPa | Shear modulus (or rigidity) based on the depth range of the slab interface realization (weighted average of the expected values +1 s.d.). Rounded to the nearest integer. |
| ConvRate1 | Float | mm/yr | Value of the lowest estimate of the convergence rate. Rounded to the 2nd decimal. |
| ConvRate2 | Float | mm/yr | Value of the average estimate of the convergence rate. Rounded to the 2nd decimal. |
| ConvRate3 | Float | mm/yr | Value of the highest estimate of the convergence rate. Rounded to the 2nd decimal. |
| MwMax1 | Float | scalar | Maximum moment magnitude based on the total area of the slab interface realization (expected value -1s). Rounded to the 2nd decimal. |
| MwMax2 | Float | scalar | Maximum moment magnitude based on the total area of the slab interface realization (expected value). Rounded to the 2nd decimal. |
| MwMax3 | Float | scalar | Maximum moment magnitude based on the total area of the slab interface realization (expected value +1s). Rounded to the 2nd decimal. |
| TM0Rate11 | Float | Nm | Moment rate of the slab interface realization obtained from the product of TotalArea*Mu1*ConvRate1. Logarithmic, base 10, value rounded to the 3rd decimal. |
| TM0Rate33 | Float | Nm | Moment rate of the slab interface realization obtained from the product of TotalArea*Mu3*ConvRate3. Logarithmic, base 10, value rounded to the 3rd decimal. |
| Field | Variable | Units | Description |
|---|---|---|---|
| IDFS | Char(7) | n.a. | Identifier of the fault source within EFSM20. |
| SlabName | Char(24) | n.a. | Long name of the subduction system (Gibraltar Arc, Calabrian Arc, Hellenic Arc, Cyprus Arc). |
| ShortName | Char(3) | n.a. | Short name of the subduction system (GiA, CaA, HeA, CyA). |
| IDDS | Char(3) | n.a. | Number of the dataset linked to the file "DescriptionOfDatasets". |
| IDNode | Char(8) | n.a. | Identifier of the individual nodes coded as follows: three-letter code of the model name, followed by an ordinal including leading zeroes. |
| Lon | Float | degrees | Longitude of the node in decimal degrees, positive eastward, datum WGS84 (EPSG 4326). The east-west spacing between nodes is fixed at 10 km. |
| Lat | Float | degrees | Latitude of the node in decimal degrees, positive northward, datum WGS84 (EPSG 4326). The north-south spacing between nodes is fixed at 10 km. |
| Depth | Float | km | Depth of the node, positive downward from sea level. The node depth spacing is fixed at 10 km, starting from 5 km. |
| Strike | Float | degrees | Value of the slab orientation, between 0-360° increasing clockwise from the north following the right-hand rule. Recalculated from the nearest point on the slab mid-surface. Rounded to the nearest integer. |
| DipDir | Float | degrees | Value of the slab dip direction (downward direction of maximum slope), between 0-360° increasing clockwise from the north. Calculated as strike + 90°. Rounded to the nearest integer. |
| Dip | Float | degrees | Value of the slab dip angle, between 0-90° increasing downward from the horizontal. Recalculated from the nearest point on the slab mid-surface. Rounded to the nearest integer. |
The table below summarizes the content of the EFSM20 Meshes dataset.
| Category | File Name | Description | Parameters table link |
| Crustal Faults | EFSM20 Crustal Faults - Polygons | Outline of the crustal fault meshes. Polygons. | B1 |
| EFSM20 Crustal Faults - Points | Point samples of the crustal fault plane used to construct the meshes. Points. | B2 | |
| EFSM20 Crustal Faults - Meshes | Triangular elements of the crustal fault mesh obtained by Delaunay triangulation. Polygons. | B3 | |
| Subduction Interface | EFSM20 Subduction Interface - Polygons | Outline of the subduction interface meshes. Polygons. | B1 |
| EFSM20 Subduction Interface - Points | Point samples of the subduction interface surface used to construct the meshes. Points. | B2 | |
| EFSM20 Subduction Interface - Meshes | Triangular elements of the crustal fault mesh obtained by Delauny triangulation. Polygons. | B3 | |
| Table B1 - Definition of the EFSM20 Crustal Faults - Polygons and EFSM20 Subduction Interface - Polygons attributes. | |||
| Field | Variable | Unit | Description |
| IDFS | Char(254) | n.a. | Identifier of the fault source within EFSM20. |
| PointsJSon | Char(254) | n.a. | URL including a query to the webservice to download the EFSM20 Crustal Faults - Points file of the relevant fault, in GeoJson format. |
| MeshJSon | Char(254) | n.a. | URL including a query to the webservice to download the EFSM20 Crustal Faults - Meshes file of the relevant fault, in GeoJson format. |
| lat_c | Float | degrees | Longitude of the polygon centroid, datum WGS84, positive East. |
| lon_c | Float | degrees | Latitude of the polygon centroid, datum WGS84, positive North. |
| depth_c | Float | m | Depth of the polygon centroid, datum mean sea level, positive up. |
| area | Float | m^2 | Total area of the mesh triangles within the polygon. |
| Table B2 - EFSM20 Crustal Faults - Points and EFSM20 Subduction Interface - Points | |||
| Field | Variable | Unit | Description |
| IDFS | Char(254) | n.a. | Identifier of the fault source within EFSM20. |
| PointID | Char(254) | n.a. | Indentifier of the relevant point. |
| lat | Float | degrees | Longitude of the point, datum WGS84, positive East. |
| lon | Float | degrees | Latitude of the point, datum WGS84, positive North. |
| pntDep | Float | m | Depth of the point, datum mean sea level, positive up. |
| Table B3 - EFSM20 Crustal Faults - Meshes and EFSM20 Subduction Interface - Meshes | |||
| Field | Variable | Unit | Description |
| IDFS | Char(254) | n.a. | Identifier of the fault source within EFSM20. |
| IdTriangle | Integer | n.a. | Identifier of the mesh triangle. |
| IdVertex1 | Char(254) | n.a. | Identifier of the first triangle vertex. |
| lat1 | Float | degrees | Longitude of the first triangle vertex, datum WGS84, positive East. |
| lon1 | Float | degrees | Latitude of the first triangle vertex, datum WGS84, positive North. |
| depth1 | Float | m | Depth of the first triangle vertex, datum mean sea level, positive up. |
| IdVertex2 | Char(254) | n.a. | Identifier of the second triangle vertex. |
| lat2 | Float | degrees | Longitude of the second triangle vertex, datum WGS84, positive East. |
| lon2 | Float | degrees | Latitude of the second triangle vertex, datum WGS84, positive North. |
| depth2 | Float | m | Depth of the second triangle vertex, datum mean sea level, positive up. |
| IdVertex3 | Char(254) | n.a. | Identifier of the third triangle vertex. |
| lat3 | Float | degrees | Longitude of the third triangle vertex, datum WGS84, positive East. |
| lon3 | Float | degrees | Latitude of the third triangle vertex, datum WGS84, positive North. |
| depth3 | Float | m | Depth of the third triangle vertex, datum mean sea level, positive up. |
| lat_c | Float | degrees | Longitude of the triangle centroid, datum WGS84, positive East. |
| lon_c | Float | degrees | Latitude of the triangle centroid, datum WGS84, positive North. |
| depth_c | Float | m | Depth of the triangle centroid, datum mean sea level, positive up. |
| strike | Float | degrees | Value of the triangle orientation, between 0-360° increasing clockwise from the north following the right-hand rule. |
| dip | Float | degrees | Value of the triangle dip angle, between 0-90° increasing downward from the horizontal. |
| area | Float | m^2 | Area of the triangle. |
| AR | Float | scalar | Aspect ratio of the triangle, calculated as the ratio of the largest and shortest distance between the centroid and the vertices. |
| R | Float | scalar | Ratio between area and aspect ratio. |
- Details
- Category: datasets
European Fault-Source Model 2020 (EFSM20)
The European Fault-Source Model 2020 (EFSM20) was initially designed as a product of the EU H2020 Project SERA (WP25-JRA3) to fulfill the requirements related to active faulting of the 2020 update of the European Seismic Hazard Model (ESHM20) following the probabilistic framework established for the 2013 European Seismic Hazard Model (ESHM13). EFSM20 is now part of the portfolio of the EFEHR services.
EFSM20 has two main categories of seismogenic sources: crustal faults and subduction systems. Crustal faults provide the hazard model with seismicity rates in various tectonic contexts, including onshore and offshore active plate margins and interiors. Subduction systems provide the hazard model with slab interface and intraslab seismicity rates. The model includes 1,248 crustal faults spanning a total length of ~95,100 km and four subduction systems (Gibraltar, Calabrian, Hellenic, and Cyprus Arcs), with a focus on an area encompassing a buffer of 300 km around all target European countries (except for Overseas Countries and Territories, OTCs) and on a maximum of 300 km depth for slabs. Besides the original dataset, EFSM20 features 3D fault-source geometries made of triangular meshes that can be used in various applications of earthquake modeling.
- Details
- Category: datasets
PNRR MEET WP11 IPSES Activity 11.9a.
Earthquake faulting is a complex process encompassing different spatio-temporal scales. Datasets of active
faults and seismogenic sources typically provide one or just a few facets at a time of this many-sided system.
This activity aims to coordinate the geological and geophysical communities, particularly those working on
earthquake hazards (e.g., surface displacement, ground failures, ground shaking, tsunami), to develop new
datasets and strengthen existing ones to provide innovative, strategic data-service portfolios.
After establishing the main requirements, we will design workflows for the following data: 3D fault geometries
of seismogenic sources with constraints from geological 3D models (see OU 15 ISPRA); connections between
3D fault geometries and 2D fault surface traces (see OU 15 ISPRA); integration between spatial parameters of
coseismic surface ruptures and earthquake-induced ground failures (see OU 15 ISPRA); paleoearthquakes data.
The 4th dimension will be ensured by integrating the timing of modern and ancient surface ruptures and ground
failures.
The development of these new datasets will be aided by the Geology and Geotechnologies Laboratory
(https://bit.ly/33nPfCj) and the Reflection Seismology Laboratory “SismoLab-3D”
(https://sismolab3d.ingv.it/). Coordination meetings will be organised to harmonise the different
contributions.
Web services of 4D interoperable data and metadata, using EPOS-compliant protocols (considering persistent
identifiers, licences, metadata, documentation, and DMP), will be distributed through the
SEISMOFAULTS.EU Platform (https://www.seismofaults.eu/) and linked to the Italian Platform for Solid
Earth Science. Users will thus be enabled to explore and retrieve information from traditionally disconnected
datasets. For example, it will be possible to integrate active fault data from different sources, improving the
findability and accessibility of such information by a wide community of users and stakeholders.
