NDLI: An Independent Assessment of the Load/Unload Response Ratio (LURR) Proposed Method of Earthquake Prediction

Content Provider	Springer Nature Link
Author	Trotta, J. E. Tullis, T. E.
Copyright Year	2006
Abstract	The Load/Unload Response Ratio (LURR) method is a proposed technique to predict earthquakes that was first put forward by Yin (1987). LURR is based on the idea that when an area enters the damage regime, the rate of seismic activity during loading of the tidal cycle increases relative to the rate of seismic activity during unloading in the months to one year preceding a large earthquake. Since earth tides generally contribute the largest temporal variations in crustal stress, it seems plausible that earth tides would trigger earthquakes in areas that are close to failure (e.g., Vidale et al., 1998). However, the vast majority of studies have shown that earth tides do not trigger earthquakes (e.g., Vidale et al., 1998; Heaton, 1982; Rydelek et al., 1992). In this study, we conduct an independent test of the LURR method, since there would be important scientific and social implications if it were proven to be a robust method of earthquake prediction. Smith and Sammis (2004) undertook a similar study and found no evidence that there was predictive significance to the LURR method. We have repeated calculations of LURR for the Northridge earthquake in California, following both the parameters of X.C. Yin (personal communication) and the somewhat different ones of Smith and Sammis (2004). Though we have followed both sets of parameters closely, we have been unable to reproduce either set of results. Our examinations have shown that the LURR method is very sensitive to certain parameters. Thus it seems likely that the discrepancies between our results and those of previous studies are due to unaccounted for differences in the calculation parameters. A general agreement was made at the 2004 ACES Workshop in China between research groups studying LURR to work cooperatively to resolve the differences in methods and results, and thus permit more definitive conclusions on the potential usefulness of the LURR method in earthquake prediction.
Starting Page	2375
Ending Page	2387
Page Count	13
File Format	PDF
ISSN	00334553
Journal	Pure and applied geophysics
Volume Number	163
Issue Number	11
e-ISSN	14209136
Language	English
Publisher	Birkhäuser-Verlag
Publisher Date	2006-12-20
Publisher Place	Basel
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Earthquake prediction tides LURR triggering seismicity Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The Newest Developments of Load-Unload Response Ratio (LURR)

A Statistical Investigation of the Earthquake Predictions Using LURR

Fast Computing for LURR of Earthquake Prediction

LURR's Twenty Years and its Perspective

Statistical Tests of Load-Unload Response Ratio Signals by Lattice Solid Model: Implication to Tidal Triggering and Earthquake Prediction

Development of a New Approach to Earthquake Prediction: Load/Unload Response Ratio (LURR) Theory

Failure Potential Evaluation in Engineering Experiments Using Load/Unload Response Ratio Method

Stress Reorientation and LURR: Implication for Earthquake Prediction Using LURR

LURR and the San Simeon M 6.5 Earthquake in 2003 and the Seismic Tendency in CA

An Independent Assessment of the Load/Unload Response Ratio (LURR) Proposed Method of Earthquake Prediction

Similar Documents

The Newest Developments of Load-Unload Response Ratio (LURR)

A Statistical Investigation of the Earthquake Predictions Using LURR

Fast Computing for LURR of Earthquake Prediction

LURR's Twenty Years and its Perspective

Statistical Tests of Load-Unload Response Ratio Signals by Lattice Solid Model: Implication to Tidal Triggering and Earthquake Prediction

Development of a New Approach to Earthquake Prediction: Load/Unload Response Ratio (LURR) Theory

Failure Potential Evaluation in Engineering Experiments Using Load/Unload Response Ratio Method

Stress Reorientation and LURR: Implication for Earthquake Prediction Using LURR

LURR and the San Simeon M 6.5 Earthquake in 2003 and the Seismic Tendency in CA

An Independent Assessment of the Load/Unload Response Ratio (LURR) Proposed Method of Earthquake Prediction