Relocation of the 1998 Zhangbei-Shangyi earthquake sequence using the double difference earthquake location algorithm

2004 ◽  
Vol 17 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Yang Zhi-xian ◽  
Chen Yun-tai
Keyword(s):  
Earthquake Sequence ◽  
Earthquake Location ◽  
Double Difference ◽  
Location Algorithm

Relocation of the Bachu-Jiashi, Xinjiang Earthquake Sequence in 2003 Using the Double-Difference Location Algorithm

2006 ◽  
Vol 49 (1) ◽  
pp. 148-156 ◽  
Author(s):  
Yuan HUANG ◽  
Jian-Si YANG ◽  
Tian-Zhong ZHANG
Keyword(s):  
Earthquake Sequence ◽  
Double Difference ◽  
Location Algorithm

Supplemental Material: Geophysical analysis of the 30 July 1972 Sitka, Alaska, earthquake sequence

2020 ◽  
Author(s):  
Juan A. Ochoa Chavez ◽  
Diane Doser
Keyword(s):  
Earthquake Sequence ◽  
Double Difference ◽  
Alaska Earthquake

Supplemental Material 1 contains relocated aftershocks of 30 July 1972 sequence. Supplemental Material 2 contains relocation parameters used in double-difference algorithm (HYPODD).<br>

scholarly journals APPLICATION OF 3-D VELOCITY MODELS AND RAY TRACING IN DOUBLE DIFFERENCE EARTHQUAKE LOCATION ALGORITHMS: APPLICATION TO THE MYGDONIA BASIN (NORTHERN GREECE)

2004 ◽  
Vol 36 (3) ◽  
pp. 1396 ◽  
Author(s):  
O. C. Galanis ◽  
C. B. Papazachos ◽  
P. M. Hatzidimitriou ◽  
E. M. Scordilis
Keyword(s):  
Ray Tracing ◽  
Velocity Structure ◽  
Test Site ◽  
Earthquake Location ◽  
Double Difference ◽  
Northern Greece ◽  
Local Networks ◽  
Velocity Models ◽  
Earthquake Locations

In the past years there has been a growing demand for precise earthquake locations for seismotectonic and seismic hazard studies. Recently this has become possible because of the development of sophisticated location algorithms, as well as hardware resources. This is expected to lead to a better insight of seismicity in the near future. A well-known technique, which has been recently used for relocating earthquake data sets is the double difference algorithm. In its original implementation it makes use of a one-dimensional ray tracing routine to calculate seismic wave travel times. We have modified the implementation of the algorithm by incorporating a three-dimensional velocity model and ray tracing in order to relocate a set of earthquakes in the area of the Mygdonia Basin (Northern Greece). This area is covered by a permanent regional network and occasionally by temporary local networks. The velocity structure is very well known, as the Mygdonia Basin has been used as an international test site for seismological studies since 1993, which makes it an appropriate location for evaluating earthquake location algorithms, with the quality of the results depending only on the quality of the data and the algorithm itself. The new earthquake locations reveal details of the area's seismotectonic structure, which are blurred, if not misleading, when resolved by standard (routine) location algorithms.

scholarly journals Rupture process of the July 2003 northern Miyagi earthquake sequence, NE Japan, estimated from double-difference hypocenter locations

2003 ◽  
Vol 55 (12) ◽  
pp. 741-750 ◽  
Author(s):  
Tomomi Okada ◽  
Norihito Umino ◽  
Akira Hasegawa
Keyword(s):  
Rupture Process ◽  
Earthquake Sequence ◽  
Double Difference ◽  
Ne Japan
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