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HYPOINVERSE

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Histogram of the root mean square (rms) difference between the <span class="search-highlight">HYPOINVERSE</span> ...
Published: 27 January 2015
Figure 3. Histogram of the root mean square (rms) difference between the HYPOINVERSE and Bancroft solutions using Charlevoix seismic‐zone real data. An rms D >0 represents a solution in which Bancroft produced a better rms than HYPOINVERSE, and rms D <0 represents a solution in which
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(a) Comparison of Bancroft algorithm and <span class="search-highlight">HYPOINVERSE</span> location residuals usi...
Published: 27 January 2015
Figure 2. (a) Comparison of Bancroft algorithm and HYPOINVERSE location residuals using synthetic data. Dark gray indicates Bancroft, and the black lines indicate HYPOINVERSE. Histograms are shown for latitude, longitude, depth, and origin time residuals calculated from the true and estimated
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Histograms of the  GDOP  classified by rms value. For hypocenters with GDOP...
Published: 27 January 2015
Figure 5. Histograms of the GDOP classified by rms value. For hypocenters with GDOP<∼4, Bancroft had fewer cases with smaller rms than did HYPOINVERSE. For hypocenters with GDOP>∼4, Bancroft had more cases with smaller rms than did HYPOINVERSE.
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(a) Map view of 36 <span class="search-highlight">HYPOINVERSE</span> locations with their horizontal and vertical...
Published: 17 May 2022
Figure 4. (a) Map view of 36 HYPOINVERSE locations with their horizontal and vertical location errors. (b) Map view of double‐difference (DD) locations using only the phase data (event 8 not relocated). The mainshock focal mechanism is shown, and black lines indicate two nodal planes. The main
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Hypocentral Parameters for the 15 and 16 May 1951, Seismic Events Obtained ...
Published: 12 August 2015
Table 3 Hypocentral Parameters for the 15 and 16 May 1951, Seismic Events Obtained in the Present Study Using the HYPOSAT and HYPOINVERSE‐2000 Version hyp1.40 Location Codes 15 May 1951 16 May 1951 Parameter HYPOSAT HYPOINVERSE HYPOSAT HYPOINVERSE Origin time (GMT
Journal Article
Published: 01 April 1984
Seismological Research Letters (1984) 55 (2): 3–6.
... of the more widely used programs (HYPOELLIPSE, FASTHYPO, HYPO71, and HYPOINVERSE). In all the programs considered, an individual confidence interval is given for the depth error. For the epicentral error, HYPO71 and HYPOINVERSE provide only individual confidence estimates, while the other programs provide...
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A map view showing the 30 well‐located earthquakes with initial <span class="search-highlight">HYPOINVERSE</span>...
Published: 15 October 2014
Figure 7. A map view showing the 30 well‐located earthquakes with initial HYPOINVERSE locations as red circles and HypoDD locations as green circles. The HypoDD locations of the 10 large earthquakes are shown as blue circles, with error ellipses from the original HYPOINVERSE location. The thickly
Journal Article
Published: 01 April 1990
Bulletin of the Seismological Society of America (1990) 80 (2): 395–410.
..., using various layered and laterally varying velocity models. Locations with QUAKE3D are nearly identical to HYPOINVERSE locations when the same flat-layered velocity model is used. For the examples presented, the computation time per event is approximately 4 times slower than HYPOINVERSE...
Journal Article
Published: 01 June 1986
Bulletin of the Seismological Society of America (1986) 76 (3): 771–783.
...Barry R. Lienert; E. Berg; L. Neil Frazer Abstract We present an earthquake location method, HYPOCENTER, which combines features of the two well-known algorithms HYPO71 and HYPOINVERSE, with a new technique which we term adaptive damping. Each column of the linearized condition matrix T , which...
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(a). Map view of <span class="search-highlight">HYPOINVERSE</span> location of 19 events; (b) cross-section A–B o...
Published: 01 June 2010
Figure 4. (a). Map view of HYPOINVERSE location of 19 events; (b) cross-section A–B of HYPOINVERSE locations; (c) cross-section C–D of HYPOINVERSE locations; (d) map view of double-difference locations using only phase data, event 13 was an outlier and not located; (e) across-strike cross-section
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Map showing the 268 earthquakes relocated by the <span class="search-highlight">HYPOINVERSE</span>&#x2F;VELEST steps (...
Published: 01 February 2013
Figure 3. Map showing the 268 earthquakes relocated by the HYPOINVERSE/VELEST steps (white dots), and the 427 events that were relocated up through the hypoDD double‐difference algorithm (black dots). About 85% of the events locate on the Pa–NA plate boundary within the GoC . Note
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Location errors calculated with the <span class="search-highlight">Hypoinverse</span> code ( Klein, 2002 ). Trian...
Published: 01 December 2011
Figure 2. Location errors calculated with the Hypoinverse code ( Klein, 2002 ). Triangles (left frame) are the rms of the time residuals versus horizontal errors ( ERH ) in kilometers. The right frame is the rms versus the vertical errors ( ERZ ) of the initial locations.
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Focal depths obtained with <span class="search-highlight">Hypoinverse</span> and velocity model V1 (top row) and ...
Published: 01 June 2010
Figure 5. Focal depths obtained with Hypoinverse and velocity model V1 (top row) and with the SSST method and velocity model V4 (middle and bottom rows). In the left column, the foci are projected into an east–west section and in the central column into a north–south section. The right column
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Distribution of hypocenters located with the <span class="search-highlight">Hypoinverse</span> code. The faults t...
Published: 01 June 2010
Figure 4. Distribution of hypocenters located with the Hypoinverse code. The faults that ruptured in 1887 (P, Pitáycachi; T, Teras, and O, Otates) are highlighted by bold traces. The solid circle is station NE81 of the NARS–Baja array; solid triangles show the location of RESNES stations; squares
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Map of actual and calculated locations using <span class="search-highlight">HypoInverse</span> 2000 for large sho...
Published: 01 October 2003
Figure 5. Map of actual and calculated locations using HypoInverse 2000 for large shots used as part of the wide-angle refraction study ( Zhao et al., 2001 ). Large black circles are large explosions used to calibrate earthquake location program. Triangles are INDEPTH III stations. Small circles
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Earthquake relocation result for Greene County cluster. Black stars indicat...
Published: 25 April 2018
Figure 5. Earthquake relocation result for Greene County cluster. Black stars indicate initial locations from National Earthquake Information Center (NEIC) catalog, squares indicate HYPOINVERSE‐2000 relocations using velocity model from Table  3 , circles indicate hypoDD relocations ( Waldhauser
Journal Article
Published: 09 March 2022
Seismological Research Letters (2022) 93 (5): 2426–2438.
... catalogs at local and regional scales. The renovated open‐source package assembles several sequential algorithms including seismic first‐arrival picking (PhaseNet and STA/LTA), phase association (REAL), absolute location (VELEST and HYPOINVERSE), and double‐difference relative location (hypoDD...
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North–south cross section perpendicular to strike of preferred fault plane....
Published: 15 October 2014
Figure 6. North–south cross section perpendicular to strike of preferred fault plane. Red circles represent HYPOINVERSE locations with error bars, and green circles are the same earthquakes relocated with HypoDD.
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Initial locations obtained using the regional body-wave arrivals and Hypoin...
Published: 01 June 2011
Figure 5. Initial locations obtained using the regional body-wave arrivals and Hypoinverse. For relocation purposes, we divided the region into six boxes. The stars are the main events of 3 August 2009.
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Comparison of earthquake locations by SBSP (filled circles) and by  Hypoinv...
Published: 01 January 2004
Figure 6. Comparison of earthquake locations by SBSP (filled circles) and by Hypoinverse (circles). Top figure is the epicenter plot; center and bottom figures are longitude vs. depth plots. Stations are shown as triangles.