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Sumisu Caldera
MGDS_FeatureID lowest in hierarchy:
Activity:
Max Temperature Category:
Latitude:
31.4667
Longitude:
140.0667
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
690
Minimum Depth (mbsl):
670
Tectonic setting:
Volcano Number (if applicable):
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
well-formed caldera with diameter 8-9 km and a caldera wall 600-700 m high; Tani et al. (2008): "Iwabuchi (1999) discovered vent communities (including mussels and clams) clustered around warm (12.1°C) seeps near the summit of a caldera-floor cone."; note: Fujikura et al. (2008) book lists Sumisu Caldera vent at 920-m depth
Notes Relevant to Biology:
Bathymodiolus mussels, gastropods, vestimentiferan tubeworms
Year and How Discovered (if active, visual confirmation is listed first):
1998 submersible Shinkai 2000
Discovery References (text):
[Iwabushi (1999) Sumisu Caldera. JAMSTEC J. Deep-Sea Res. 15: 83-94 (in Japanese with English abstract)].
Other References (text):
Tani et al. (2008) Sumisu volcano, Izu-Bonin arc, Japan: site of a silicic caldera-forming eruption from a small open-ocean island. Bull Volcanol 70: 547–562.
Fujikura, K., Okutani, T., and Maruyama, T., eds. (2008) Deep-sea life: Biological observations using research submersibles. Tokai Univ. Press.
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