Topic
Earth Impact Database
About: Earth Impact Database is a research topic. Over the lifetime, 3 publications have been published within this topic receiving 2 citations.
Papers
1 Jan 2009
TL;DR: An Expert Database on the Earth Impact Structures (EDEIS) as mentioned in this paper has been compiled and is being maintained in the Tsunami Laboratory of the Institute of Computational Mathematics and Mathematical Geophysics of SD RAS in Novosibirsk.
Abstract: An Expert Database on the Earth Impact Structures (EDEIS) has been compiled and is being maintained in the Tsunami Laboratory of the Institute of Computational Mathematics and Mathematical Geophysics of SD RAS in Novosibirsk. This database is somewhat more liberal than the well-known Earth Impact Database maintained by the Planetary and Space Science Centre, University of New Brunswick, Canada. In addition to including the fully validated impact structures, the EDEIS also lists proposed structures whose im- pact genesis still needs validation. For any structure, the degree of confidence of impact origin is reflected by its validity index V, which varies from 4 (confirmed) to 0 (rejected) with intermediate values of 3 (probable), 2 (perspective) and 1 (proposed for further study). Classi- fication of structures over the validity index is based on some sort of expert judgment and reflects the availability of impact criteria found at four different levels — morphological, geological, petrological, and mineralogical. Currently, the database contains 1020 structures, among them 214 with V = 4, 211 with V = 3, 455 with V = 2, and 47 with V = 1. 93 structures have validity index V = 0, because the once proposed impact origin was later disproved by additional studies. Cataloging of impact structures discovered on the Earth surface is an important instrument for evaluation of frequency of impacts and for studying the comet and asteroid hazard. Presently there exist more than 10 global ca- talogs and databases on Earth impact structures. The widely-known Earth Impact Database (EID), maintained by the Planetary and Space Science Cen- tre, University of New Brunswick, Canada (1) is considered to be a reference database in this field. The EID, currently having 176 craters, contains only those structures whose impact genesis has been confirmed over the whole
2 citations
1 Oct 2015
TL;DR: The TanDEM-X mission as discussed by the authors generates a global digital elevation model (DEM) with unprecedented properties, which is used for mapping confirmed terrestrial impact craters as listed in the Earth Impact Database.
Abstract: The TanDEM-X mission generates a global digital elevation model (DEM) with unprecedented properties. We use it for mapping confirmed terrestrial impact craters as listed in the Earth Impact Database. Both for simple and complex craters detailed investigations of the morphology of the particular structure and of the surrounding terrain can be performed.
2 citations
TL;DR: The record of collision of the Earth with extraterrestrial bodies is far from complete because huge areas have not yet been properly surveyed as mentioned in this paper, and only a few impact structures are known so far in Northeast and Central Asia (Figure 1).
Abstract: The record of collision of the Earth with extraterrestrial bodies is far from complete because huge areas have not yet been properly surveyed. Search for the evidence of impact is not an easy task, however, because many impact structures have been erased by geological processes [e.g., Grieve, 1997] . As a result, only a few impact structures are known so far in Northeast and Central Asia (Figure 1) [Grieve, 1997semi; Earth Impact Database, 2002].
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2015 | 1 |
| 2009 | 1 |
| 2002 | 1 |