Geophysical fields, block structure, and seismic activity of the Central Kuril Islands

2012 ◽  
Vol 6 (6) ◽  
pp. 436-443 ◽  
Author(s):  
R. G. Kulinich ◽  
M. G. Valitov ◽  
Z. N. Proshkina
Keyword(s):  
Seismic Activity ◽  
Block Structure ◽  
Kuril Islands ◽  
Geophysical Fields ◽  
Central Kuril Islands

scholarly journals CO-SEISMIC GRAVITY GRADIENT CHANGES OF THE 2006–2007 GREAT EARTHQUAKES IN THE CENTRAL KURIL ISLANDS FROM GRACE OBSERVATIONS

2017 ◽  
Vol XLII-4/W4 ◽  
pp. 517-522
Author(s):  
A. Rahimi ◽  
M. Shahrisvand
Keyword(s):  
Normal Fault ◽  
Gravity Anomalies ◽  
Kuril Islands ◽  
Gravity Gradient ◽  
Gravitational Gradient ◽  
North East ◽  
Earth Gravity ◽  
Central Kuril Islands ◽  
Frequency Components ◽  
Grace Satellites

GRACE satellites (the Gravity Recovery And climate Experiment) are very useful sensors to extract gravity anomalies after earthquakes. In this study, we reveal co-seismic signals of the two combined earthquakes, the 2006 Mw8.3 thrust and 2007 Mw8.1 normal fault earthquakes of the central Kuril Islands from GRACE observations. We compute monthly full gravitational gradient tensor in the local north-east-down frame for Kuril Islands earthquakes without spatial averaging and de-striping filters. Some of gravitational gradient components (e.g. ΔVxx, ΔVxz) enhance high frequency components of the earth gravity field and reveal more details in spatial and temporal domain. Therefore, co-seismic activity can be better illustrated. For the first time, we show that the positive-negative-positive co-seismic ΔVxx due to the Kuril Islands earthquakes ranges from − 0.13 to + 0.11 milli Eötvös, and ΔVxz shows a positive-negative-positive pattern ranges from − 0.16 to + 0.13 milli Eötvös, agree well with seismic model predictions.

Development of lacustrine-boggy sedimentary environments in the ancient Rasshua Island caldera (Central Kuril Islands) in the Holocene

2012 ◽  
Vol 6 (4) ◽  
pp. 326-338 ◽  
Author(s):  
N. G. Razzhigaeva ◽  
L. A. Ganzei ◽  
T. A. Grebennikova ◽  
L. M. Mokhova ◽  
Kh. A. Arslanov ◽  
...  
Keyword(s):  
Kuril Islands ◽  
The Holocene ◽  
Sedimentary Environments ◽  
Central Kuril Islands

A great earthquake doublet and seismic stress transfer cycle in the central Kuril islands

Nature ◽  
2008 ◽  
Vol 451 (7178) ◽  
pp. 561-565 ◽  
Author(s):  
Charles J. Ammon ◽  
Hiroo Kanamori ◽  
Thorne Lay
Keyword(s):  
Stress Transfer ◽  
Kuril Islands ◽  
Great Earthquake ◽  
Central Kuril Islands ◽  
Seismic Stress ◽  
Earthquake Doublet

scholarly journals Seismic activity of major hidden faults in the Priamurye region

2020 ◽  
Vol 192 ◽  
pp. 04010
Author(s):  
Svetlana Tusikova ◽  
Tatyana Merkulova ◽  
Gulshat Gil’manova
Keyword(s):  
Seismic Activity ◽  
Seismic Energy ◽  
Geological Data ◽  
Historical Events ◽  
Geophysical Fields ◽  
Energy Calculations ◽  
Instrumental Observation ◽  
Observation Period

Based on the data of the relief analysis and the geophysical fields, major submeridional and NW-trending hidden faults are detected in the Priamurye region. The seismic energy calculations are performed for the instrumental observation period given the historical events. The faults showing the highest seismic activity are revealed. The seismic energy released by hidden faults is commensurable with a similar value obtained for the seismoactive faults detected from the geological data.

scholarly journals Periodical variations of some geophysical fields on the territory of Tajikistan

2019 ◽  
Vol 1 (1) ◽  
pp. 75-83
Author(s):  
Farshed Karimov ◽  
Nusratullo Salomov ◽  
Vladimir Manskii ◽  
Kholiyor Khudjaev ◽  
Khushruz Oqilshoev
Keyword(s):  
Seasonal Variations ◽  
Seismic Activity ◽  
Mineral Water ◽  
Plastic Deformations ◽  
Geophysical Fields ◽  
Rock Model ◽  
Ph Variations ◽  
Varia Tions

The data about seasonal variations in the rates of several geophysical fields on the ter-ritory of Tajikistan have been brought and issues about the mutual correlations are discussed. The seasonal variations in plastic deformations of the utmost strained rock model samples, varia-tions in Earth crust deformations on Shaartuz site, seismic activity on the number of earthquakes data in the Dushanbe-Vakhsh area during 2010-2014, pH variations on the thermal mineral water deposit Obigarm have been revealed.

Earthquakes and tsunamis (November 15, 2006, and January 13, 2007) in the Central Kuril Islands region: A justified prediction

2008 ◽  
Vol 419 (1) ◽  
pp. 320-324 ◽  
Author(s):  
L. I. Lobkovskii ◽  
E. A. Kulikov ◽  
A. B. Rabinovich ◽  
A. I. Ivashchenko ◽  
I. V. Fain ◽  
...  
Keyword(s):  
Kuril Islands ◽  
Central Kuril Islands
Sign in / Sign up

Export Citation Format

Share Document