Relevant bibliographies by topics / Moment tensor inversion / Dissertations / Theses
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Dissertations / Theses on the topic 'Moment tensor inversion'

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Published: 4 June 2021
Last updated: 21 February 2023

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1

Kim, Junkyoung. "Complex seismic sources and time-dependent moment tensor inversion." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184841.

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There are many examples of earthquakes whose surface expressions are much more complicated than the seismologically derived faulting models. Seismologists also have found seismic source complexity and improved seismicity data have shown that rupture may occur on irregular or multiple shear surfaces. To simultaneously map both geometrical and temporal variation of the seismic sources for a complex rupture history from observed seismograms, it is possible to use a time dependent moment tensor (TDMT) inversion. The TDMT inversion algorithm has been tested with three synthetic data examples with v
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2

Andersen, Lindsay Marguerite. "A relative moment tensor inversion technique applied to seismicity induced by mining." Thesis, University of the Witwatersrand, Johannesburg, 2001. http://hdl.handle.net/10539/20887.

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Three hybrid moment tensor inversion methods were developed for seismic sources originating from a small source region. These techniques attempt to compensate for various types of systematic error (or noise) that influence seismograms recorded in the underground environment in order to achieve an accurate and robust measure of the seismic moment tensor. The term 'hybrid' was used to distinguish between the relative method proposed by Dahm (1995) and the methods developed in this thesis. The hybrid methods were essentially weighting schemes designed to enhance the accuracy of the compute
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3

Napoli, Vanessa J. "Relative Location Analysis and Moment Tensor Inversion for the 2012 Gulf of Maine Earthquake Swarm." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:106714.

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Thesis advisor: John E. Ebel<br>Large magnitude offshore passive margin earthquakes are rare, making small magnitude events (M &lt; 4) the predominant data available to study the mechanisms of seismicity along passive margins. This study is focused on a swarm of events (M2.1-M3.9) that occurred from 2012-2013 located in the Gulf of Maine (GM) along the Atlantic Passive Margin (APM) shelf break, a region with previously minimal recorded seismic activity. Relative locations were calculated for the earthquakes of the GM swarm and a moment tensor inversion method was used to calculate focal mechan
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4

Spedalieri, Giancarlo. "Unravelling volcanic tremor source at mount etna from quantitative multiparametric analysis and moment tenso inversion." Doctoral thesis, Università di Catania, 2019. http://hdl.handle.net/10761/4134.

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UNRAVELLING VOLCANIC TREMOR SOURCE AT MOUNT ETNA FROM QUANTITATIVE MULTIPARAMETRIC ANALYSIS AND MOMENT TENSOR INVERSION Developments of multiparametric monitoring networks, real time analysis techniques and the acquisition of high-resolution data, have allowed to improve the knowledge of the structures and dynamics that characterize the active volcanoes. To understand the dynamics of an active volcano, it is possible to proceed with two different types of studies: i) multiparametric studies based on the joint analysis of different data (such as geophysical, geochemical, petrological data); ii
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5

Trovato, Claudio. "Séismes à longue période (LP) sur le Mt. Etna (Italie) : inversion du tenseur de moment et incertitudes liées à leur interprétation." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2021/document.

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Les séismes de type longue période (LP) sont aujourd’hui enregistrés sur la plupart des volcans dans le monde entier. Malgré cela, le mécanisme à leur source n’est encore que très peu compris. A l’heure actuelle les modèles proposés pour expliquer leur origine sont : 1) la résonance d’une fracture remplie de gaz ou de fluides excités par des instabilités dans l’écoulement des fluides ou par la rupture fragile du magma ; 2) la fracturation lente des sédiments peu consolidés à la surface des volcans, dans des conditions de transition entre le ductile et le fragile. L’outil le plus
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6

Hagos, Lijam Zemichael. "Earthquake Sources, the Stress Field and Seismic Hazard : A Study in Eritrea and its Surrounding." Doctoral thesis, Uppsala universitet, Geofysik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7292.

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Presented in this thesis are some basic concepts and applications of seismic hazard analysis and the elements that influence the amplitude and geometric attenuation of earthquake ground motion. This thesis centers on the identification of the styles of failure, focal mechanisms, and the state of regional stress in the study area. Seismic hazard is a complex problem often involving considerable uncertainties. Therefore it is reasonable to consider different seismic hazard analysis approaches in order to as robustly as possible define zones of different levels of hazard. With the aim of characte
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7

Barth, Andreas. "Frequency sensitive moment tensor inversion for light to moderate magnitude earthquakes in eastern Africa and derivation of the regional stress field Frequenzabhängige Momententensorinversion für schwache bis mittelstarke Erdbeben im östlichen Afrika und Ableitung des regionalen Spannungsfeldes /." [S.l. : s.n.], 2007. http://swbplus.bsz-bw.de/bsz262419157abs.pdf.

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8

Angus, Douglas A. C. "Applicability of moment tensor inversions to mine-induced microseismic data." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35999.pdf.

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9

Donner, Stefanie, Dirk Rößler, Frank Krüger, Abdolreza Ghods, and Manfred Strecker. "Source mechanisms of the 2004 Baladeh (Iran) earthquake sequence from Iranian broadband and short-period data and seismotectonic implications." Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5398/.

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The northward movement and collision of the Arabian plate with Eurasia generates compressive stresses and resulting shortening in Iran. Within the Alborz Mountains, North Iran, a complex and not well understood system of strike-slip and thrust faults accomodates a fundamental part of the NNE-SSW oriented shortening. On 28th of May 2004 the Mw 6.3 Baladeh earthquake hit the north-central Alborz Mountains. It is one of the rare and large events in this region in modern time and thus a seldom chance to study earthquake mechanisms and the local ongoing deformation processes. It also demonstrated
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10

Morales, Yáñez Catalina Patricia. "Inversión del tensor de momento sísmico y función fuente temporal de terremotos utilizando registros de campo cercano." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/141056.

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Magíster en Ciencias, Mención Geofísica<br>Obtener parámetros de la fuente sísmica a partir de datos sismológicos y/o geodésicos es de suma importancia en la caracterización de la fuente de terremotos, lo cual cobra especial relevancia en sistemas de monitoreo sísmico en tiempo real. Existen modelos y metodologías que permiten realizar estas inferencias asumiendo distintos niveles de complejidad en el modelo de la fuente sísmica. Sin embargo, la inversión simultánea del tensor de momento y función fuente temporal utilizando datos regionales y de campo cercano de terremotos es un tema poco estu
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11

TEYSSONEYRE, VALERIE. "Inversion du tenseur des moments sismiques pour des seismes de magnitude moderee enregistres a des distances regionales." Université Joseph Fourier (Grenoble), 2001. http://www.theses.fr/2001GRE10017.

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Ce travail de these a eu pour objectif d'utiliser des enregistrements effectues a distance regionale pour determiner la nature d'une source sismique et etudier sa complexite eventuelle, a savoir l'existence de plusieurs sous-evenements. A l'issu d'une synthese bibliographique, nous avons choisi d'utiliser une methode d'inversion lineaire qui permet d'estimer le tenseur des moments sismiques representant la source. Dans un premier temps, nous avons teste le programme d'inversion sur des donnees numeriques, en s'affranchissant des problemes lies a la modelisation de la propagation. L'influence d
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12

Mieres, Madrid José Antonio. "Modelación de observaciones de geodesia marina en zonas de subducción e inversión del tensor de momento sísmico mediante observaciones de desplazamiento estático." Tesis, Universidad de Chile, 2019. http://repositorio.uchile.cl/handle/2250/170181.

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Tesis para optar al grado de Magíster en Ciencias, Mención Geofísica<br>Este trabajo presenta el procesamiento, análisis y modelamiento de los primeros datos de Geodesia Marina medidos en el margen chileno. El objetivo principal fue desarrollar meto- dologías de procesamiento y análisis de registros de sensores de presión absoluta del fondo marino (APG), para obtener el campo de desplazamiento vertical del fondo oceánico. Por medio de dichas observaciones se infieren transientes, los cuales se modelan con el fin de estudiar las distintas fases del ciclo sísmico en las zonas de subducción
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13

Jian, Pei-Ru, and 簡珮如. "Moment tensor inversion of regional earthquakes in Taiwan." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/78793204109076440421.

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碩士<br>國立中央大學<br>地球物理學系<br>85<br>Moment tensor inversion of regional earthquakes in TaiwanPei-Ru, JianAbstractBy taking advantage of the establishment of the Broadband Array in Taiwan for Seismology (BATS), we developed a procedure of centroid moment tensor (CMT) inversion to overcome the limitations of conventional first motion solutions and teleseismic waveform inversions. We then applied this method to invert source parameters of moderate-sized earthquakes occurred in the Taiwan region.Ou
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14

Yang, Chu-yun, and 楊褚雲. "Moment Tensor Inversion With Local Strong ground-motion waveform." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/48507386263594666387.

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15

Xia, Ganyuan. "Moment-tensor inversion for regional earthquakes in the Pacific Northwest." Thesis, 1993. http://hdl.handle.net/1957/29211.

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16

Mustac, Marija. "Hierarchical Bayesian Inversion for the Point Source Moment Tensor: Method and Applications." Phd thesis, 2016. http://hdl.handle.net/1885/113632.

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One of the most important aspects of seismology is explaining the generation of seismic waves during earthquakes. The first mathematical models of earthquakes involved shear faulting, where deformation of rocks surrounding the fault increases the stress level, causes rock fracturing and results in radiation of elastic waves. Over the years, a large number of earthquakes that cannot be explained only with shear faulting have been observed. Hence, the mathematical model of seismic sources evolved into a seismic moment tensor (MT), which also includes isotr
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17

Schurr, Bernd D. "The 1993, Scott Mills aftershock sequence : moment tensor inversion and joint hypocenter determination." Thesis, 1997. http://hdl.handle.net/1957/29425.

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18

Cneng, Hui-Wen, and 鄭惠文. "Real-time earthquake source parameter monitoring by using grid-based moment tensor inversion technique: an example of offshore northeast Taiwan." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/63229146872895711566.

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碩士<br>國立中央大學<br>地球物理研究所<br>99<br>We use a grid-based moment tensor (GridMT) inversion technique and broadband continuous recordings to real-time monitor the earthquakes occurred in the offshore northeast Taiwan. The moment tensor inversion technique and a grid search scheme are applied to obtain the information of source parameters, including the hypocenter, moment magnitude, and focal mechanism. In Taiwan, the routine moment tensor solutions are reported by CWB(Central Weather Bureau) and IES which both require some lag time for the information on event time and location before performing the
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19

Křížová, Dana. "Ohniskový proces řeckých zemětřesení." Doctoral thesis, 2017. http://www.nusl.cz/ntk/nusl-367561.

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Title: The source process of Greek earthquakes Author: Dana K ížová Department: Department of Geophysics Supervisor of the doctoral thesis: Prof. RNDr. Ji í Zahradník DrSc., Department of Geophysics Abstract: Investigations of moment tensor (MT) and its uncertainty are topical. This thesis is focused on isotropic component of three shallow earthquakes: Event A in Cretan Sea (Mw 5.3) and two events near Santorini island, B (Mw 4.9) and C (Mw 4.7). MT is inverted from full waveforms in an assumed 1D velocity model. The inverse problem is non-linear in centroid depth and time, and linear in six M
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20

Vackář, Jiří. "Automatizace určování zdrojových parametrů zemětřesení." Doctoral thesis, 2018. http://www.nusl.cz/ntk/nusl-388837.

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Title: Automated determination of earthquake source parameters Author: Jiří Vackář Department: Department of Geophysics Supervisor: prof. RNDr. Jiří Zahradník, DrSc., Department of Geophysics Abstract: The thesis deals with methods for automated inversion of seismic source parameters. We studied the influence of structure model used and show an ex- ample how the existing model can be improved. We have developed a new, fully automated tool for the centroid moment tensor (CMT) inversion in a Bayesian framework. It includes automated data retrieval from ArcLink server or local data storage. Step-
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21

Barth, Andreas [Verfasser]. "Frequency sensitive moment tensor inversion for light to moderate magnitude earthquakes in eastern Africa and derivation of the regional stress field = Frequenzabhängige Momententensorinversion für schwache bis mittelstarke Erdbeben im östlichen Afrika und Ableitung des regionalen Spannungsfeldes / von Andreas Barth." 2007. http://d-nb.info/1003658148/34.

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22

Chang, Kai-Wen, and 張凱雯. "Techniques and Results of Moment Tensor Inversions using Strong Motion Waveforms of Taiwan TSMIP Data, 1993-2009." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/97004241660427017153.

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碩士<br>國立臺灣大學<br>地質科學研究所<br>99<br>Deriving earthquake source parameters is important for the purpose of seismic hazard mitigation. Moment tensors are among the most important earthquake source parameters for seismologists, and are now routinely derived using modern broadband seismic networks around the world. However, it is advantageous to apply similar waveform inversion techniques to other available waveforms, including accelograms recorded by strong motion stations. We inverted the source mechanisms of the Taiwan earthquake sequence between 1993 and 2009 by applying the regional moment te
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23

Teyssonyere, Valérie. "Inversion du tenseur des moments pour des séismes de magnitude modérée enregistrés à des distances régionales." Phd thesis, 2001. http://tel.archives-ouvertes.fr/tel-00749713.

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Ce travail de thèse a eu pour objectif d' utiliser des enregistrements effectués à distance régionale pour déterminer la nature d'une source sismique et étudier sa complexité éventuelle, à savoir l'existence de plusieurs sous-événements. A l'issue d'une synthèse bibliographique, nous avons choisi d'utiliser une méthode d' inversion linéaire qui permet d'estimer le tenseur des moments sismiques représentant la source. Dans un premier temps, nous avons testé le programme d'inversion sur des données numériques, en s'affranchissant des problèmes liés à la modélisation de la propagation. L'influenc
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