How many people in each Syrian sub-district felt strong shaking on 6 February 2023?

Modified Mercalli shaking intensity for every cell (the higher of the two shocks, magnitude 7.8 and 7.5), population of every sub-district in each intensity class, 119 fault lines, and a catalogue of 1,136 earthquakes in and around Syria since 1900.

In short

8,688,071 people in Syria experienced strong shaking (intensity VI+), 2,886,182 of them at VII+.

Sub-districts with the most exposed people are listed in the exposure table.

1,136 earthquakes of magnitude 3.5+ in the catalogue, 113 of them 5+.

The 6 February 2023 earthquake in Syria: shaking intensity, exposed population per sub-district and fault lines — Reduced-resolution preview with a watermark; the full-resolution map is in the package.

Who it is for

Structural engineers assessing buildings, civil defence and organisations planning for emergencies, and geology and engineering students.

Method: what we add to the raw data

Shaking intensity was taken for each of the two shocks and the higher value kept per cell, since buildings experienced both.
Intensity was transferred to the 100 m population grid by linear interpolation, and population was summed per intensity class for each sub-district.
Intensity uses Modified Mercalli classes: IV or less light, V moderate, VI strong, VII very strong, VIII+ severe.
Intensity-zone polygons were extracted and each fault line's length computed.
An earthquake catalogue of magnitude 3.5+ in and around Syria since 1900 was assembled, with a field marking events inside Syria (52).

Product details

What you get	5 spatial layers in GeoPackage, 2 GeoTIFF rasters, 2 CSV tables, lyrx and qml symbology for ArcGIS Pro and QGIS, a PNG map at 220 dpi, and an Arabic and English guide
Formats	GPKG, GeoTIFF, CSV, lyrx, qml, PNG
Coordinate system	WGS 84 (EPSG:4326)
Licence	Commercial use allowed for you and the organisation you buy for; no resale or redistribution
Delivery	A private download link valid for 24 hours, within 6 hours of payment confirmation
Package size	ZIP 4.8 MB
Personal data	The product contains no personal data

Spatial layers

subdistricts_shaking — polygons, 272: Sub-districts with intensity and population per class
shaking_zones — polygons, 4: Shaking intensity zones
fault_lines — lines, 119: Fault lines
earthquakes_1900_2025 — points, 1,136: Earthquake catalogue since 1900
epicentres_2023 — points, 2: Epicentres of the 6 February 2023 shocks

Raster files (GeoTIFF)

D080_mmi_max.tif — 1,598 × 1,202, 500 m: Maximum shaking intensity of the two shocks
D080_pga_max_pctg.tif — 1,598 × 1,202, 500 m: Maximum peak ground acceleration

Tables

D080_subdistricts_exposure.csv — 272 rows: Exposed population per sub-district
D080_earthquake_catalog_1900_2025.csv — 1,136 rows: Earthquake catalogue

Limitations

Intensity is estimated from ground-motion models and stations, not measured at every site; local soil can amplify or reduce shaking.
Population is a 2023 estimate, not a census.
The catalogue before the 1960s is incomplete for moderate earthquakes due to sparse stations.
Fault lines are simplified regional lines, not detailed fault maps for structural design.

FAQ

How long does delivery take?: Up to 6 hours after payment is confirmed.
How long does the download link last?: 24 hours, and it is renewed free on request.
Can I get a refund?: Digital products are not refundable once downloaded — unless the file is defective or does not match the description, in which case it is replaced or fully refunded.
What does the licence allow?: Commercial use is allowed for you and the organisation you buy for; resale or redistribution is not.

The 6 February 2023 earthquake in Syria: shaking intensity, exposed population per sub-district and fault lines