Geophysical assessment of migration and storage conditions of fluids in subduction zones

Earth, Planets and Space

Table 1 Location and average electrical conductivity (EC) of main conductors detected in electromagnetic studies of subduction zones

Subduction zone	Backarc conductor			Forearc or trench-close conductor			References
	Depth (km)	EC (S/m)	Distance from trench (km)	Depth (km)	EC (S/m)	Distance from trench (km)
1. Chile-Bolivia (19.5°S-21°S)	20	0.04.-0.10	220		n.c.		Brasse et al. (2002)
2. Chile-Bolivia (17°S-19°S)	100	0.10-1	300		n.c.		Brasse and Eydam (2008)
3. Costa Rica	30	0.03-0.13	150	10	0.10-0.20	65	Worzewski et al. (2011)
4. Mexico	40	0.03-0.20	330	20	0.10-0.20	40	Joedicke et al. (2006)
5. Philippine Sea	85	0.50	320	40	0.50	140	Shimakawa and Honkura (1991)
6. South Chile	25	0.10-0.30	140	15	0.03-1	45	Brasse et al.(2009)
7. Central Argentina	200	0.03-1	800	30	0.02	300 or less	Booker et al. (2004)
8. Cascadia, British Columbia	50	0.02-0.05	120	25	0.02	50	Soyer and Unsworth (2006)
9. Cascadia, Oregon	80	0.03-1	120	25	0.03-1	80	Evans et al. (2013)
10. Greece	40	0.002-0.006	170	-	-	-	Galanopoulos et al. (2005)
11. Mariana	40	0.01	300	<30?	0.006?	50-150?	Matsuno et al. (2012)
12. Taiwan	35	0.0590.10	100	10	0.05-0.12	30	Bertrand et al. (2012)
13. Kyushu, Japan	50	1	300		n.c.		Ichiki et al. (2000)
14. Hokkaido, Japan	40	0.01-0.10	400	40	0.01-0.10	100	Ichiki et al. (2009)
15. North Honshu, Japan	170	0.15-0.30	260	15	0.10	210	Toh et al. (2006)
16. Central New Zealand	35	0.01-0.04	200	20	0.10	150	Wannamaker et al. (2009)