Journal
EARTH PLANETS AND SPACE
Volume 72, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1186/s40623-020-01181-7
Keywords
Coseismic hydrological change; Hot spring water discharge; 2011 Iwaki earthquake; 2011 Tohoku-oki earthquake; Crustal strain; Water temperature; Chloride ion; Sulfate ion; Oxygen stable isotopic ratio
Categories
Funding
- National Institute of Advanced Industrial Science and Technology
- MEXT KAKENHI [26109006]
Ask authors/readers for more resources
Hot spring discharge was linked to the 2011 Mw 6.6 Iwaki earthquake. Periodic surveys revealed that the discharge continued for more than 7 years, which is a rare and valuable long-term record of hot spring discharge triggered by an earthquake in a non-volcanic area. In terms of coseismic changes, based on a comparison of the spatial distribution of changes in the coseismic water head and calculated crustal volumetric strain using a fault model, hot spring water discharge was found to be caused by a change in the coseismic crustal volumetric strain. As for the postseismic changes, observations over 7 years revealed a gradual rise in the temperature and chloride ion concentration of the hot spring water. Such long-term hot spring discharge may be explained by the following two causes: the rise of thermal water from the deep part and the permeability changes along the hot spring channels.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available