Počet záznamů: 1
Detection of Earth impact craters aided by the detailed global gravitational model EGM2008
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SYSNO ASEP 0354962 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Detection of Earth impact craters aided by the detailed global gravitational model EGM2008 Tvůrce(i) Klokočník, Jaroslav (ASU-R) RID, ORCID
Kostelecký, J. (CZ)
Novák, P. (CZ)
Wagner, C. A. (US)Zdroj.dok. Acta geodynamica et geomaterialia. - : Ústav struktury a mechaniky hornin AV ČR, v. v. i. - ISSN 1214-9705
Roč. 7, č. 1 (2010), s. 71-97Poč.str. 27 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova global gravitational model ; gravity anomaly ; impact craters on the Earth Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika CEP LC506 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000277686900008 Anotace We have surveyed the Earth's surface using gravity anomalies and second-order radial derivatives of the disturbing gravitational potential computed from the gravitational model EGM2008 complete to degree and order 2159 (for selected degrees up to 2190). It corresponds to 5 arcmin resolution on the ground. Over most well known impact crater sites on the Earth we found the second-order derivatives (not available from ordinary gravity surveys) offered finer discrimination of circular features than the gravity anomalies themselves. We also discovered that some of the sites show evidence of double or multiple craters which will need further ground verification. Some of these signatures (in hilly or mountainous terrain) may also need to be corrected for the gravitational effect of topography to sharpen their hidden features. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2011
Počet záznamů: 1