A new book has recently been published: Hannu Ahokas: Previously unidentified meteorite impacts in South Finland. In Finnish with English abstract – Click HERE for more information.
A short appreciation: Dr. Andrew Glikson – a stroke of luck for meteorite impact research Continue reading “A stroke of luck for meteorite impact research”
The Digital Terrain Model (DTM) and the evaluation of known and the search for new impact craters in the Chiemgau meteorite impact strewn field
Kord Ernstson* (2017)
Abstract. – For several known and a few newly proposed meteorite craters in the Chiemgau meteorite impact strewn field the LiDAR data of the Digital Terrain Model DTM have been processed to reveal various maps and cross sections based on a high-resolution mesh down to 1 m and contour interval down to 0.2 m. The data processing highlights particular crater features that remain hidden in fieldwork and on conventional topographic maps and even may debunk mistaken structures.
*Faculty of Philosophy I, University of Würzburg, Germany, email@example.com
2 The Chiemgau meteorite impact event
3 Data processing
3.1 Terrain imagery
3.2 Horizontal gradient
3.3 Data filtering
3.4 Cross sections
4.1 Small craters in the DTM
4.2 Peripheral depressions around small craters
4.3 Medium-sized craters in the DTM
4.4 Mistaken structures
5 A possible large-sized crater in the DTM
6 Discussion and conclusions
The full article can be downloaded HERE
Origin of DTM material: Geobasisdaten Bayerische Vermessungsverwaltung
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Meteorite impact-induced tsunami in Lake Chiemsee, Bavaria (southeast Germany)
A new geological outcrop exposing an impressive cross-bedded diamictite substantiates the emergence of a giant tsunami in the Chiemgau Holocene impact event. Click the article!
From a communication with the “OBSERVATOIRE de L’ASTROBLÈME de Charlevoix” (Prof. Jean-Michel Gastonguay, academic advisor) the idea arose to present here on our website the Charlevoix impact structure and some of its prominent geologic inventory as well as a hint to the observatory with its museum and geologic route. Continue reading “Focusing on the Charlevoix (Quebec, Canada) impact structure”
Dear visitor of our website,
in the last years we have observed a permanently increasing number of page views, and statistics counted more than 9,000 (nine thousand) just for the last four weeks and solely for the English version. And statistics also said that a very high percentage of the views have accounted for the page on “Understanding the Impact Cratering Process: a Simple Approach“. This was the initial spark to introduce a new category “Impact educational” that may be clicked in the top menu from now on. Moreover, we got clear about the fact that many of our scientific contributions – to say it geologically – have sedimented and buried to deeper and deeper layers, and many an article may have become subject even to subduction and oblivion – despite all search engines. Hence, our new “Impact educational” category especially intends to excavate older impact literature of particular importance and interest, and specific subject areas earlier discussed on our homepage will step by step be brought into a new context also integrating new research aspects and publications. Make a test and read about meteorite impact spallation, including a chapter on dynamic spallation vs. tectonic stress – fractured pebbles as a stress indicator!