Format of the Expert Database on Earth Impact Structure
List of Notations (in brackets the format and the minimum and maximum database values of each parameter are shown).
Database contains 1140 structures. Last update: 29.12.2018
Country - Country or region, where event occured Name - Structure name (synonym) lat - Latitude of the structure ('-' for southern latitude) [-90.00,90.00] long - Longitude of the structure ('-' for western longitude) [-180.00, 180.00] age - Age [0.0000001, 3400.0] (Ma) dia - Diameter [0.0,2250.0] (km) V - Validity of the impact origin of the structure
4 - proven (all four types of criteria are confirmed)
3 - probable (any three of four confirmed)
2 - possible (any two of four confirmed)
1 - doubtful (based mostly on crater morphology)
0 - discredited
Type - Type of the bottom structure
R - Ring
C - Complicated
CR - Complicated with central raise
S - Simple bowl-shaped form
D - Depth of depression [0.5,30000.0] (m) N - Number of structures in the crater field [1,1312] Erosion - Erosion parameter [0,7] Appearance - Appearance on the Earth surface
arc, astrobleme, basin, bay, caldera, cavity, circus, crater, depression, dome, flat depression, geo. per., gulf, hill, hollow, lake, mountain, pit, plateau, structure, valley.