Tutum Bay, Ambitle Island |
active, confirmed |
arc volcano |
Tabar-Feni Arc |
-4.0833 |
153.5500 |
10 |
1996 or earlier, likely by SCUBA |
Conical Seamount |
inactive |
arc volcano |
Tabar-Feni Arc |
-3.2500 |
152.6600 |
1050 |
1998 TV grab survey determined inactive |
Luise Harbor, Lihir Island |
active, confirmed |
arc volcano |
Tabar-Feni Arc |
-3.1167 |
152.6500 |
30 |
1990 or earlier |
White Island |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.5191 |
177.1953 |
30 |
1989 or earlier, likely SCUBA |
Calypso Vents |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.6800 |
177.1170 |
200 |
1989 submersible Soucoup |
Whale Island |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.8600 |
176.9800 |
42 |
1990 or earlier, likely by SCUBA |
Ribeira Quente |
active, confirmed |
mid-ocean ridge |
Terceira Rift |
37.7250 |
-25.3160 |
10 |
1986 or earlier, likely from shore or by SCUBA |
Don Joao de Castro Bank |
active, confirmed |
mid-ocean ridge |
Terceira Rift |
38.2300 |
-26.6300 |
45 |
1995 SCUBA |
Tonga Arc, Volcano 19 |
active, confirmed |
arc volcano |
Tonga Arc |
-24.8000 |
-177.0167 |
970 |
2005 with submersibles PISCES IV and PISCES V and ROV RCV-150; 2003 plume and dredge only |
East Mata submarine volcano |
active, inferred |
arc volcano |
Tonga Arc |
-15.1010 |
-173.6780 |
1350 |
2008 plume only; 2009 plume only |
Tonga Arc, Volcano 4 |
active, inferred |
arc volcano |
Tonga Arc |
-22.0670 |
-176.2080 |
200 |
2003 plume and dredge only |
Tonga Arc, Volcano 8 |
active, inferred |
arc volcano |
Tonga Arc |
-22.8433 |
-176.4317 |
240 |
2003 plume and dredge only |
Tonga Arc, Volcano A |
active, inferred |
arc volcano |
Tonga Arc |
-20.8600 |
-175.5500 |
700 |
2004 plume only |
Tonga Arc, Volcano 1 |
active, confirmed |
arc volcano |
Tonga Arc |
-21.1500 |
-175.7500 |
210 |
2005 with submersibles PISCES IV and PISCES V and ROV RCV-150; 2003 plume and dredge only |
West Mata submarine volcano |
active, confirmed |
arc volcano |
Tonga Arc |
-15.0950 |
-173.7500 |
1208 |
2009 ROV Jason II; 2008 eruption plume detected |
Tonga Arc, Volcano C |
active, inferred |
arc volcano |
Tonga Arc |
-20.1800 |
-175.2000 |
1050 |
2004 SS11/2004 cruise did not detect hydrothermal activity |
Tonga Arc, Volcano D |
active, inferred |
arc volcano |
Tonga Arc |
-19.4500 |
-174.9167 |
760 |
2004 plume only |
Tonga Arc, Volcano J1 |
active, inferred |
arc volcano |
Tonga Arc |
-17.2400 |
-173.9500 |
560 |
2004 plume only |
Monowai Caldera |
active, confirmed |
arc volcano |
Tonga Arc |
-25.8000 |
-177.1500 |
1165 |
2005 with submersibles PISCES IV and PISCES V and ROV RCV-150; 2004 plume only |
Niua North |
active, confirmed |
arc volcano |
Tonga Arc |
-15.0667 |
-173.5667 |
1375 |
2012 ROV Quest 4000; 2008 plume only |
Tonga Arc, Volcano 14 |
active, inferred |
arc volcano |
Tonga Arc |
-23.5750 |
-176.7050 |
985 |
2003 plume and dredge only |
Niua South |
active, confirmed |
arc volcano |
Tonga Arc |
-15.1650 |
-173.5700 |
1180 |
2008 commercial ROV |
Monowai Cone |
active, inferred |
arc volcano |
Tonga Arc |
-25.8870 |
-177.1880 |
150 |
1998 R/V Sonne SO-135; 2004 plume only |
Tonga Arc, Volcano 15 |
active, inferred |
arc volcano |
Tonga Arc |
-23.9000 |
-176.7800 |
1400 |
2003 plume only |
Tonga Arc, Volcano 16 |
active, inferred |
arc volcano |
Tonga Arc |
-24.1883 |
-176.8217 |
1400 |
2003 plume and dredge only |
Tonga Arc, Volcano 18 |
active, confirmed |
arc volcano |
Tonga Arc |
-24.5850 |
-176.9170 |
1465 |
2011 ROV MAGNUM; 2003 plume and dredge only |
Marsili |
active, confirmed |
back-arc spreading center |
Tyrrhenian Back-Arc Basin, Tyrrhenian Sea |
39.2600 |
14.3780 |
800 |
2006 ROV Cherokee; 1989 shimmering water but did not confirm activity |
Philippine Ridge, West Philippine Basin |
inactive |
back-arc spreading center |
West Philippine Basin |
12.0000 |
131.4170 |
5800 |
NotProvided |
Woodlark Basin, Segment 3B |
active, inferred |
back-arc spreading center |
Woodlark Basin |
-9.8000 |
155.0667 |
3300 |
2009 plume only |
Woodlark Basin, Segment 5B |
active, inferred |
back-arc spreading center |
Woodlark Basin |
-9.2540 |
156.1910 |
3550 |
1986 plume only; 2000 plume only |