. "n\u00E1vrh iterativn\u00ED inverze seismogram\u016F pro ur\u010Den\u00ED moment\u016F do 2.stupn\u011B, syntetick\u00E9 testy konvergence s ohledem na rozlo\u017Een\u00ED stanic, \u0161um v datech, nep\u0159esnou lokalizaci a rychlostn\u00ED model;vliv kone\u010Dn\u00FDch rozm\u011Br\u016F zdroje na generaci fale\u0161n\u00FDch slo\u017Eek v mechanismu"@cs . . "mechanism" . . "0"^^ . . " fault size" . . "1"^^ . . . "2008-02-21+01:00"^^ . . "Momentov\u00E9 tenzory vy\u0161\u0161\u00EDch stup\u0148\u016F d\u00E1vaj\u00ED z\u00E1kladn\u00ED informaci o zem\u011Bt\u0159esn\u00E9m ohnisku kone\u010Dn\u00FDch rozm\u011Br\u016F p\u0159i zachov\u00E1n\u00ED aproximace bodov\u00E9ho zdroje, tj. bez nutnosti \u0159e\u0161it tomografickou \u00FAlohu. Ve srovn\u00E1n\u00ED s n\u00ED je metoda vyu\u017E\u00EDvaj\u00EDc\u00ED momentov\u00E9 tenzory rychl\u00E1 a m\u00E9n\u011B n\u00E1ro\u010Dn\u00E1 na objem dostupn\u00FDch dat. Pro seismologickou praxi jsou z t\u011Bchto moment\u016F d\u016Fle\u017Eit\u00E9 zejm\u00E9na momenty 2. stupn\u011B, kter\u00E9 obsahuj\u00ED informaci o rozm\u011Bru zdroje, jeho orientaci, o st\u0159edn\u00ED rychlosti \u0161\u00ED\u0159en\u00ED trhliny a o celkov\u00E9m trv\u00E1n\u00ED jej\u00ED aktivity. Seismick\u00FD momentov\u00FD tenzor (tenzor stupn\u011B 0) je veli\u010Dina pro siln\u00E1 zem\u011Bt\u0159esen\u00ED standardn\u011B ur\u010Dovan\u00E1 z teleseismick\u00FDch a z\u010D\u00E1sti i z region\u00E1ln\u00EDch dat. Zn\u00E1mou skute\u010Dnost\u00ED je jeho zkreslen\u00ED p\u0159i neznalosti p\u0159esn\u00E9ho hypocentra zem\u011Bt\u0159esen\u00ED a zejm\u00E9na p\u0159i nep\u0159esn\u00E9m odhadu parametr\u016F prost\u0159ed\u00ED, co\u017E je zvl\u00E1\u0161t\u011B v region\u00E1ln\u00EDch vzd\u00E1lenostech b\u011B\u017En\u00E1 chyba: m\u016F\u017Eeme nap\u0159. detekovat nest\u0159i\u017En\u00FD mechanismus, kter\u00FD je zcela fale\u0161n\u00FD. Rozli\u0161itelnost moment\u016F vy\u0161\u0161\u00EDch stup\u0148\u016F v t\u00E9to souvislosti je\u0161t\u011B nebyla zkoum\u00E1na." . "2008-12-31+01:00"^^ . "Zem\u011Bt\u0159esn\u00E9 ohnisko kone\u010Dn\u00FDch rozm\u011Br\u016F z momentov\u00FDch tenzor\u016F vy\u0161\u0161\u00EDch stup\u0148\u016F: rozli\u0161en\u00ED jeho parametr\u016F p\u0159i nep\u0159esn\u00E9m modelov\u00E1n\u00ED zemsk\u00E9 k\u016Fry a pl\u00E1\u0161t\u011B" . "25"^^ . "IAA300120502" . "25"^^ . . "design of iterative waveform inversion into moments up to degree 2,synthetic tests of convergence considering station distribution, noise in data,inexact location and velocity model;generation of spurious components in mechanism by neglect its finiteness"@en . "Higher-degree moment tensors provide information about earthquake focus of a finite extent while keeping the point-source approximation, i.e. without the need to solve a source tomographic problem. Therefore, the method based on moment is fast and less demanding concerning the amount of available data. In seismological practice, particularly important are 2nd degree moments providing an insight into fault size, its orientation, average velocity of the fracture and its duration. Seismic moment tensor (tensor of degree 0) is the quantity routinely determined from teleseismic and partly also regional waveforms. It is known that it is distorted when retrieved with inexact hypocenter of the earthquake and especially with inexact modeling of earth crust/mantle, which may happen particularly in regional inversions: e.g., non-shear mechanism of earthquake may be detected which is completely spurious. Resolvability of higher-degree moments has not been tested in this context yet."@en . "0"^^ . "Finite-extent earthquake source from higher-degree moment tensors: its resolution with uncertain crust-mantle model"@en . "http://www.isvav.cz/projectDetail.do?rowId=IAA300120502"^^ . "2005-01-01+01:00"^^ . . . . "2009-07-02+02:00"^^ . "mechanism; fault size; rupture duration"@en . . . . . . .