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 |
Mariana Trough, 14.5 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
14.4870 |
144.0940 |
4120 |
2015 plume only |
Little Volcano |
active, inferred |
back-arc spreading center |
Bransfield Strait |
-62.7500 |
-59.2500 |
1500 |
1995 plume only |
Calypso Vents |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.6800 |
177.1170 |
200 |
1989 submersible Soucoup |
C-ELSC, plume 13 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.4150 |
-176.3720 |
2100 |
2004 plume only |
Vienna Woods, Hydrothermal Field 4 |
active, confirmed |
back-arc spreading center |
Manus Basin |
-3.3712 |
150.0360 |
2240 |
1990 TV-grab |
FRSC, Fonualei South |
active, confirmed |
back-arc spreading center |
Lau Basin |
-17.5352 |
-174.5668 |
1620 |
2012 ROV Quest 4000 |
Irabu Knoll |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
25.2300 |
124.8800 |
1850 |
2000 submersible Shinkai 6500; 1986 seafloor photos did not confirm activity |
Pika |
active, confirmed |
back-arc spreading center |
Mariana Trough |
12.9183 |
143.6483 |
2990 |
2003 submersible Shinkai 6500; 2003 plume only |
CLSC, southern plumes on CL6 |
active, inferred |
back-arc spreading center |
Lau Basin |
-18.5000 |
-176.3833 |
2250 |
2009 plume only |
White Island |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.5191 |
177.1953 |
30 |
1989 or earlier, likely SCUBA |
N-ELSC, plume 27 |
active, inferred |
back-arc spreading center |
Lau Basin |
-19.7500 |
-176.0190 |
2570 |
2004 plume only; 2009 plume only |
Solwara 13 |
active, confirmed |
back-arc spreading center |
Manus Basin |
-3.7320 |
151.7465 |
2000 |
2009 commercial ROV Fugro FV300; 1993 plume only |
Futagoyama |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
24.8674 |
123.3081 |
1270 |
2016 ROV Kaiko dive 717 |
Mariana Trough, 15.5 N |
active, confirmed |
back-arc spreading center |
Mariana Trough |
15.4080 |
144.5090 |
4196 |
2015 plume only, 2016 ROV did not confirm |
Niuatahi |
active, confirmed |
back-arc spreading center |
Lau Basin |
-15.3790 |
-174.0196 |
1635 |
2009 ROV Jason II; 2003 plume only; 2004 dredging (SS11/2004 cruise); 2005 plume only; 2008 commercial ROV (report does not confirm activity) |
C-ELSC, plume 14 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.3200 |
-176.3640 |
2100 |
2004 plume only |
Hine Hina |
active, confirmed |
back-arc spreading center |
Lau Basin |
-22.5300 |
-176.6970 |
1900 |
1989 submersible Nautile |
NWLSC, Southern Caldera |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.9000 |
-177.4166 |
2160 |
2008 plume only |
N-ELSC, plume 28 |
active, inferred |
back-arc spreading center |
Lau Basin |
-19.6500 |
-175.9890 |
2550 |
2004 plume only |
Solwara 16 |
active, inferred |
back-arc spreading center |
Manus Basin |
-3.4380 |
149.9670 |
2163 |
2009 commercial ROV Fugro FV300 (activity not confirmed) |
Kilo Moana |
active, confirmed |
back-arc spreading center |
Lau Basin |
-20.0532 |
-176.1336 |
2620 |
2004 AUV ABE; 2004 plume only on previous cruise |
SPOT, Hatoma Knoll |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
24.8550 |
123.8410 |
1520 |
1999 submersible Shinkai 2000 |
Vai Lili |
active, confirmed |
back-arc spreading center |
Lau Basin |
-22.2151 |
-176.6083 |
1764 |
1989 submersible Nautile |
Minami-Ensei Knoll |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
28.3917 |
127.6417 |
740 |
1988 deep tow TV surveys followed by submersible Shinkai 2000; 1986 dredged Calyptogena shells |
ELSC3 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.1667 |
-176.3333 |
2140 |
2009 plume only |
Mariana Trough, 16.5 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
16.4010 |
144.8700 |
3829 |
2015 plume only |
PACMANUS field |
active, confirmed |
back-arc spreading center |
Manus Basin |
-3.7250 |
151.6700 |
1800 |
1991 deep-tow camera and video; 1995 submersible Shinkai 6500 |
C-ELSC, plume 15 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.2700 |
-176.3470 |
2230 |
2004 plume only |
Lobster |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.3330 |
-176.2830 |
1500 |
2008 plume and dredge only |