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  • Chapter 3 Minimum 1-D Velocity Model: Using joint ...

    Minimum 1-D Velocity Model: Using joint determination of hypocenters and velocity 3.1 Introduction This chapter deals with the estimation of a new 1-D velocity model in the Kumaon-Garhwal Himalaya region, based on travel times using the Joint hypocenter and velocity determination (JHD) method. A one-dimensional P- and S- wave velocity structures of the upper crust beneath the Kumaon-Garhwal ...

  • An algorithm for doble difference joint hypocenter ... - CORE

    An algorithm for doble difference joint hypocenter determination: application to the 2002 Molise (Central Italy) earthquake sequence . By A. Giuntini and R. Console. Cite . BibTex; Full citation; Abstract. We have developed an original computer code for double difference hypocenter determination including an independent routine for the cross-correlation estimate of the time difference between ...

  • Author: A. Giuntini and R. Console
  • An efficient method for joint hypocenter determination for ...

    1979-01-01  The number of seismic events that can be located simultaneously by the Joint Hypocenter Determination method is limited generally by the amount of computer time and computer memory available. To find directly the hypocenters of M earthquatkes and the station corrections to N stations requires solving a system of 4M + N equations in 4M + N unknowns. This paper presents a method of

  • Cited by: 104
  • An algorithm for double difference joint hypocenter ...

    («Joint Hypocenter Determination») technique, by which every event is located respect to all the other events in the same group. The JHD proce-dure includes station corrections, which are sta-tion delays common to all the earthquakes and with this method we find the event locations and the values of all station corrections. This method

  • CiteSeerX — Citation Query Joint epicentre determination ...

    3D Local Earthquake Hypocenter Determination with an Irregular Shortest-Path Method by Chao-ying Bai, Stewart Greenhalgh Abstract A simple but robust method for joint (multiple) earthquake location in arbitrary 3D velocity media is presented in this article.

  • Joint Event Location — The JHD Technique and Applications ...

    The joint hypocenter determination (JHD) technique is a relatively simple but efficient way to account for lateral velocity variations not included in the one-dimensional velocity models used to locate seismic events. The basic idea behind the technique is the simultaneous location of a group of events and the determination of a common set of station corrections. Under appropriate conditions the station

  • Cited by: 28
  • Hypocenter determination using simulated annealing ...

    Hypocenter determination of micro-earthquakes of Mount "X-1" geothermal field has been conducted using simulated annealing and guided error search method using a 1D ...

  • Relocation of the 2010-2013 near the north coast of Papua ...

    2015-04-24  This study used Modified Joint Hypocenter Determination (MJHD) method. Using P arrival phase data reported by the BMKG and openly available from website repogempa.bmkg.go.id, we relocated the mainshock of this large significant earthquake and its aftershocks. Then we identified the prefered fault planes from the candidate fault planes provided by the global CMT catalogue. The

  • Fault plane of the 1964 Niigata earthquake, Japan, derived ...

    modified joint hypocenter determination (MJHD), and the grid search (GS), methods to obtain their hypocenters and identify the fault plane of the mainshock. We usedP-wave arrival times at 13 Japanese stations reported by the Japan Meteorological Agency (JMA).

  • APPLICATION OF THE MODIFIED JOINT HYPOCENTER

    The relocation of hypocenters was studied using the method of Modified Joint Hypocenter Determination (MJHD) to improve the location of hypocenters. We conducted a case study of two events that occurred in the central Philippines, which were the 1990 and the 1996 Bohol earthquakes in the southeast and the northwest of Bohol, respectively. This study is to unlock the query of the absolute ...

  • Joint Event Location — The JHD Technique and Applications ...

    Abstract The joint hypocenter determination (JHD) technique is a relatively simple but efficient way to account for lateral velocity variations not included in the one

  • An efficient method for joint hypocenter determination for ...

    1979-01-01  University, Itham, NY 14853, U.S.A. (Received 28 November 1978) Abm'act--The number of seismic events that can be located simultaneously by the Joint Hypocenter Determination method is limited generally by the amount of computer time an$ computer memory available, To fred directly the hypocenters of M earthquatkes and the station corrections to N stations requires solvin8 a system of

  • An algorithm for doble difference joint hypocenter ... - CORE

    An algorithm for doble difference joint hypocenter determination: application to the 2002 Molise (Central Italy) earthquake sequence . By A. Giuntini and R. Console. Cite . BibTex; Full citation; Abstract. We have developed an original computer code for double difference hypocenter determination including an independent routine for the cross-correlation estimate of the time difference between ...

  • An algorithm for doble difference joint hypocenter ... - CORE

    An algorithm for doble difference joint hypocenter determination: application to the 2002 Molise (Central Italy) earthquake sequence . By R. Console and A. Giuntini. Download PDF (2 MB) Abstract. We have developed an original computer code for double difference hypocenter determination including an independent routine for the cross-correlation estimate of the time difference between two ...

  • Method: Modified Joint Hypocenter Determination (MJHD) by ...

    Method: Modified Joint Hypocenter Determination (MJHD) by Hurukawa and Imoto . By Hurukawa Nobuo. Abstract . Fault plane: Nodal plane striking NNE-SSW dipping WNW Comments: This is an intraplate earthquake in the Pacific Plate. The rupture started at a shallowest point and propagated westward and southward. Aftershocks concentrated a plane dipping NW or westward. Figure 1.

  • CORE

    More than 100 events were relocated with the Joint Hypocenter Determination method to study the depth distribution of the events of the swarm recorded by the Chile Ridge Subduction Project local network. The events are associated to a small area of approximately 7 × 7 km located in the Aysén fjord, on one of the main branches of the Liquiñe–Ofqui fault. Distribution in depth is located ...

  • Fault plane of the 1964 Niigata earthquake, Japan, derived ...

    modified joint hypocenter determination (MJHD), and the grid search (GS), methods to obtain their hypocenters and identify the fault plane of the mainshock. We usedP-wave arrival times at 13 Japanese stations reported by the Japan Meteorological Agency (JMA).

  • APPLICATION OF THE MODIFIED JOINT HYPOCENTER DETERMINATION ...

    The relocation of hypocenters was studied using the method of Modified Joint Hypocenter Determination (MJHD) to improve the location of hypocenters. We conducted a case study of two events that occurred in the central Philippines, which were the 1990 and the 1996 Bohol earthquakes in the southeast and the northwest of Bohol, respectively.

  • Joint Hypocenter Determination JHD - 123dok

    Joint Hypocenter Determination JHD Penentuan relokasi hiposenter dengan metode JHD dianggap dapat memperbaiki kesalahan model kecepatan 1D yang digunakan pada metode SED. Karena metode JHD ini akan menginversi waktu tempuh kelompok hiposenter untuk mendapatkan lokasi hiposenter baru yang lebih akurat dengan seperangkat koreksi stasiun sebagai koreksi terhadap kesalahan model

  • Two seismic gaps on the Sagaing Fault, Myanmar, derived ...

    2011-01-14  All the earthquakes were relocated on the Sagaing Fault by using the modified joint hypocenter determination method. Combining the relocated epicenters with information on foreshocks, aftershocks, seismic intensities, and coseismic displacement, we estimated the location of the fault plane that ruptured during each earthquake.

  • science.gov

    Relocation of the 2010-2013 near the north coast of Papua earthquake sequence using Modified Joint Hypocenter Determination (MJHD) method. SciTech Connect. Salomo, Dimas, E-mail:

  • CORE

    A study of microseismicity in southwest Puerto Rico using joint hypocenter determination By Christina Marie Rodriguez Topics: Geology

  • Method: Modified Joint Hypocenter Determination (MJHD) by ...

    Method: Modified Joint Hypocenter Determination (MJHD) by Hurukawa and Imoto . By Hurukawa Nobuo. Abstract . Fault plane: Nodal plane striking NNE-SSW dipping WNW Comments: This is an intraplate earthquake in the Pacific Plate. The rupture started at a shallowest point and propagated westward and southward. Aftershocks concentrated a plane dipping NW or westward. Figure 1.

  • APPLICATION OF THE MODIFIED JOINT HYPOCENTER DETERMINATION ...

    The relocation of hypocenters was studied using the method of Modified Joint Hypocenter Determination (MJHD) to improve the location of hypocenters. We conducted a case study of two events that occurred in the central Philippines, which were the 1990 and the 1996 Bohol earthquakes in the southeast and the northwest of Bohol, respectively.

  • An efficient method for joint hypocenter determination for ...

    The number of seismic events that can be located simultaneously by the Joint Hypocenter Determination method is limited generally by the amount of computer time and computer memory available. To find directly the hypocenters of M earthquatkes and the station corrections to N stations requires solving a system of 4 M + N equations in 4 M + N unknowns.

  • Method: Modified Joint Hypocenter Determination (MJHD) by ...

    @MISC{Hurukawa_method:modified, author = {Nobuo Hurukawa}, title = {Method: Modified Joint Hypocenter Determination (MJHD) by Hurukawa}, year = {}} Share. OpenURL . Abstract. Fig. 1. Hypocenters relocated by the MJHD method. Global CMT solution is also shown. Epicentral distribution and two vertical cross sections along A-B and C-D lines, which are perpendicular to strikes of the two

  • Abstract Database :: APPLICATION OF THE MODIFIED JOINT ...

    The relocation of hypocenters was studied using the method of Modified Joint Hypocenter Determination (MJHD) to improve the location of hypocenters. We conducted a case study of two events that occurred in the central Philippines, which were the 1990 and the 1996 Bohol earthquakes in the southeast and the northwest of Bohol, respectively.

  • An algorithm for doble difference joint hypocenter ...

    An algorithm for doble difference joint hypocenter determination: application to the 2002 Molise (Central Italy) earthquake sequence . R. Console, A. Giuntini. Abstract. We have developed an original computer code for double difference hypocenter determination including an independent routine for the cross-correlation estimate of the time difference between two waveform segments, relative to ...

  • Joint Hypocenter Determination JHD - 123dok

    Joint Hypocenter Determination JHD Penentuan relokasi hiposenter dengan metode JHD dianggap dapat memperbaiki kesalahan model kecepatan 1D yang digunakan pada metode SED. Karena metode JHD ini akan menginversi waktu tempuh kelompok hiposenter untuk mendapatkan lokasi hiposenter baru yang lebih akurat dengan seperangkat koreksi stasiun sebagai koreksi terhadap kesalahan model

  • RELOKASI HIPOSENTER GEMPABUMI WILAYAH SUMATRA BARAT ...

    An accurate hypocenter location is required for the analysis of tectonic structure in detail, such as the identification of the fault plane pattern, the pattern of subduction zones, identification plate boundaries, and etc. While the earthquake early

  • science.gov

    Relocation of the 2010-2013 near the north coast of Papua earthquake sequence using Modified Joint Hypocenter Determination (MJHD) method. SciTech Connect. Salomo, Dimas, E-mail:

  • Method: Modified Joint Hypocenter Determination (MJHD) by ...

    @MISC{Hurukawa_method:modified, author = {Nobuo Hurukawa}, title = {Method: Modified Joint Hypocenter Determination (MJHD) by Hurukawa}, year = {}} Share. OpenURL . Abstract. Fig. 1. Hypocenters relocated by the MJHD method. Global CMT solution is also shown. Epicentral distribution and two vertical cross sections along A-B and C-D lines, which are perpendicular to strikes of the two

  • An efficient method for joint hypocenter determination for ...

    The number of seismic events that can be located simultaneously by the Joint Hypocenter Determination method is limited generally by the amount of computer time and computer memory available. To find directly the hypocenters of M earthquatkes and the station corrections to N stations requires solving a system of 4 M + N equations in 4 M + N unknowns. This paper presents a method of solving this

  • gi.alaska.edu

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  • Seismological constraints on tectonics of southern and ...

    I used a Joint Hypocenter Determination (JHD) method to improve the earthquake locations obtained after routine data processing. Over 15,000 subduction zone earthquakes in southern Alaska and over 3,600 crustal earthquakes in central Alaska with magnitudes ML ≥ 2 that occurred from 1988 to 2000 were relocated. I found that the relative earthquake locations can be improved with the use of the JHD

  • An algorithm for doble difference joint hypocenter ...

    We have developed an original computer code for double difference hypocenter determination including an independent routine for the cross-correlation estimate of the time difference between two waveform segments, relative to different events recorded by the same stations. This computer code has been tested relocating a set of 26 events recorded by the seismic stations of the telemetered ...

  • THE JOINT DETERMINATION OF HYPOCENTER PARAMETERS

    By separating the velocity model parameters from the hypocenter parameters, the solution of a large set of equations for simultaneous determination of these parameters is avoided.836 P- and S-arrival times from 43 events recorded by the BTSN in 1979 are used for the joint determination. The result indicates that in the area around Beijing there is a lateral inhomogeneity of velocity structure ...

  • Seismotectonic Model of the Kangra–Chamba Sector of ...

    Seismotectonic Model of the Kangra–Chamba Sector of Northwest Himalaya: Constraints from Joint Hypocenter Determination and Focal Mechanism Naresh Kumar; Naresh Kumar Wadia Institute of Himalayan Geology, 33 GMS Road, Dehradun 248 001, India. [email protected] Search for other works by this author on: GSW. Google Scholar. Jyoti Sharma; Jyoti Sharma Wadia Institute of

  • Precise hypocenter distribution of deep low‐frequency ...

    2011-01-27  Topics. Atmospheric Composition . Atmospheric Composition and Structure ... We apply a new hypocenter determination method utilizing the summed cross correlation coefficient over many stations, termed a network correlation coefficient (NCC), to 112 LFEs in the western Shikoku and 1566 LFEs in the whole Nankai subduction zone. While the catalog depths are widely distributed in some

  • RELOKASI HIPOSENTER GEMPABUMI WILAYAH SUMATRA BARAT ...

    An accurate hypocenter location is required for the analysis of tectonic structure in detail, such as the identification of the fault plane pattern, the pattern of subduction zones, identification plate boundaries, and etc. While the earthquake early

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