Evidence from the ad 2000 Izu islands earthquake swarm that stressing rate governs seismicity

Nature ◽  
2002 ◽  
Vol 419 (6902) ◽  
pp. 58-61 ◽  
Author(s):  
Shinji Toda ◽  
Ross S. Stein ◽  
Takeshi Sagiya
Keyword(s):  
Earthquake Swarm ◽  
Izu Islands ◽  
Stressing Rate

scholarly journals Evaluation of ULF electromagnetic phenomena associated with the 2000 Izu Islands earthquake swarm by wavelet transform analysis

2011 ◽  
Vol 11 (3) ◽  
pp. 965-970 ◽  
Author(s):  
P. Han ◽  
K. Hattori ◽  
Q. Huang ◽  
T. Hirano ◽  
Y. Ishiguro ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Data Analysis ◽  
Earthquake Swarm ◽  
Magnetic Anomalies ◽  
Reference Station ◽  
Similar Data ◽  
Izu Peninsula ◽  
Geomagnetic Data ◽  
Wavelet Transform Analysis ◽  
Izu Islands

Abstract. There have been many reports on ULF electromagnetic phenomena associated with the 2000 Izu Islands earthquake swarm. In this study, seismo-magnetic anomalies are presented by examining energy variations of signatures at the periods around 100 s. Geomagnetic data observed at three stations in Izu Peninsula from 1 January 2000 to 30 April 2001 have been analyzed and wavelet transform has been performed. In order to indentify anomalous changes from ionosphere disturbances, Kakioka station has been chosen as a reference station, and the similar data analysis has been performed. The results suggest that the unusual energy enhancement of the Z component, which only appears in Izu Peninsula from late June until early November 2000, might possibly be one of electromagnetic phenomena associated with the 2000 Izu Islands earthquake swarm.

ULF geomagnetic anomaly associated with 2000 Izu Islands earthquake swarm, Japan

2004 ◽  
Vol 29 (4-9) ◽  
pp. 425-435 ◽  
Author(s):  
Katsumi Hattori ◽  
Aya Serita ◽  
Kaoru Gotoh ◽  
Chie Yoshino ◽  
Makoto Harada ◽  
...  
Keyword(s):  
Earthquake Swarm ◽  
Geomagnetic Anomaly ◽  
Izu Islands

THE 2015 PLAINFIELD, CT EARTHQUAKE SWARM

2016 ◽  
Author(s):  
John E. Ebel ◽  
◽  
Parker W. Aubin ◽  
Justin Starr ◽  
Nawa Dahal ◽  
...  
Keyword(s):  
Earthquake Swarm

The Norris Lake Earthquake Swarm of June Through September, 1993; Preliminary Findings

1994 ◽  
Vol 65 (2) ◽  
pp. 167-171 ◽  
Author(s):  
L.T. Long ◽  
A. Kocaoglu ◽  
R. Hawman ◽  
P.J.W. Gore
Keyword(s):  
Earthquake Swarm ◽  
Building Stone ◽  
Aftershock Sequence ◽  
Average Depth ◽  
Induced Earthquakes ◽  
Epicentral Area ◽  
Event Recorder ◽  
Significant Damage ◽  
The 1950S ◽  
Recreational Lake

Abstract During the summer of 1993, the residents in the Norris Lake community, Lithonia, Georgia, were bothered by an incessant swarm of earthquakes. The largest, a magnitude 2.7 on September 23, showed a normal aftershock decay and occurred after the main swarm. Over 10,000 earthquakes have been detected, of which perhaps 500 were felt. The earthquakes began June 8, 1993, with a 5-day swarm. The residents, accustomed to quarry explosions, suspected the quarries of irregular activities. To locate the source of the events, a visual recorder and a digital event recorder were placed in the epicentral area. Ten to 20 events were detected per day for the next three weeks. The swarm then escalated to a peak of over 100 per day by August 15, 1993. Activity following the peak died down to about 10 events per day. The magnitude 2.7 event of September 23 was followed by a normal aftershock sequence. The larger events were felt with intensity V within 2 km of their epicenter, and noticed (intensity II) to a distance of 15 km. Some incidents of cracked wallboard and foundations have been reported, but no significant damage has been documented. Preliminary locations, based on data from digital event recorders, suggest an average depth of 1.0 km. The hypocenters are in the Lithonia gneiss, a massive migmatite resistant to weathering and used locally as a building stone. The epicenters are 1 to 2 km south-southwest of the Norris Lake Community. The cause of the seismicity is not yet known. The earthquakes are characteristic of reservoir-induced earthquakes; however, Norris Lake is a small (96 acres), 2 to 5m deep recreational lake which has existed since the 1950s.

scholarly journals Reflections on the L’Aquila trial and the social dimensions of disaster risk

2019 ◽  
Vol 28 (4) ◽  
pp. 434-445 ◽  
Author(s):  
Angelo Jonas Imperiale ◽  
Frank Vanclay
Keyword(s):  
Local Community ◽  
Social Issues ◽  
Local Level ◽  
Earthquake Swarm ◽  
Disaster Risk ◽  
Community Empowerment ◽  
Court Case ◽  
Civil Protection ◽  
Content Type ◽  
The Social

Purpose The purpose of this paper is to reflect on what can be learned about disaster risk reduction (DRR) from the L’Aquila trial of scientists. The court case was initiated because of a controversial meeting on 31 March 2009 of the Major Risks Committee (MRC), held under the auspices of the Italian Department of Civil Protection. The purpose of the meeting was to consider (prior to the fatal earthquake of 6 April 2009) disaster risk in the L’Aquila area, which was being affected by an earthquake swarm since October 2008. Design/methodology/approach The authors undertook a document analysis of trial materials, and a review of academic and media commentary about the trial. Findings The legal process revealed that disaster governance was inadequate and not informed by the DRR paradigm or international guidelines. Risk assessment was carried out only in a techno-scientific manner, with little acknowledgement of the social issues influencing risks at the local community level. There was no inclusion of local knowledge or engagement of local people in transformative DRR strategies. Originality/value Most previous commentary is inadequate in terms of not considering the institutional, scientific and social responsibilities for DRR as exposed by the trial. This paper is unique in that it considers the contents of the MRC meeting as well as all trial documents. It provides a comprehensive reflection on the implications of this case for DRR and the resilience of peoples and places at risk. It highlights that a switch from civil protection to community empowerment is needed to achieve sustainable outcomes at the local level.

scholarly journals Wastewater disposal and earthquake swarm activity at the southern end of the Central Valley, California

2016 ◽  
Vol 43 (3) ◽  
pp. 1092-1099 ◽  
Author(s):  
T. H. W. Goebel ◽  
S. M. Hosseini ◽  
F. Cappa ◽  
E. Hauksson ◽  
J. P. Ampuero ◽  
...  
Keyword(s):  
Earthquake Swarm ◽  
Central Valley ◽  
Wastewater Disposal ◽  
Swarm Activity

scholarly journals Aseismic deformation associated with an earthquake swarm in the northern Apennines (Italy)

2017 ◽  
Vol 44 (15) ◽  
pp. 7706-7714 ◽  
Author(s):  
A. Gualandi ◽  
C. Nichele ◽  
E. Serpelloni ◽  
L. Chiaraluce ◽  
L. Anderlini ◽  
...  
Keyword(s):  
Earthquake Swarm ◽  
Northern Apennines ◽  
Aseismic Deformation
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