Below is the subset of Vent Fields that contain the taxonomy term (Activity, Tectonic Setting, Region, Ocean, National Jurisdiction, Temperature Category, or MGDS Feature ID) listed above.
You can sort the list below by clicking on a column header.
Vent Field Name ID | Activity |
Tectonic Setting![]() |
Region | Latitude | Longitude | Maximum or Single Reported Depth | Year and How Discovered |
---|---|---|---|---|---|---|---|
Banua Wuhu submarine volcano | active, confirmed | arc volcano | Sangihe Arc | 3.1380 | 125.4910 | 10 | 1996 or earlier, likely by SCUBA |
Ruby | active, confirmed | arc volcano | Mariana Arc | 15.6200 | 145.5700 | 214 | 2006 ROV Jason II; 2003 plume only |
Zealandia | active, inferred | arc volcano | Mariana Arc | 16.8800 | 145.8500 | 144 | 2003 plume only; 2009 or earlier ROV did not confirm activity |
Taketomi Thermal Area | active, confirmed | arc volcano | Ryukyu Arc | 24.3483 | 124.1017 | 23 | 1987 or earlier, likely by SCUBA |
Mokuyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 28.3200 | 140.5800 | 1200 | 1990 submersible Shinkai 2000 |
Kasuga 3 Seamount | active, confirmed | arc volcano | Mariana Arc | 21.3833 | 143.6000 | 1140 | 1987 submersible Alvin |
East Diamante volcano | active, confirmed | arc volcano | Mariana Arc | 15.9300 | 145.6700 | 457 | 2004 ROV ROPOS; 2003 plume only |
Hot Beach, Mendeleev Volcano | active, confirmed | arc volcano | Kuril Arc | 43.9760 | 145.7360 | 1 | 1990 or earlier, from the beach |
Shinkurose Bank | inactive | arc volcano | Izu-Bonin Arc | 33.5667 | 140.1667 | 200 | 1992 or earlier submersible Shinkai 2000 |
Doyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 27.6833 | 140.8167 | 520 | 1990 submersible Shinkai 2000 |
Fukujin volcano | active, inferred | arc volcano | Mariana Arc | 21.9300 | 143.4700 | 1100 | 1987 deposits only |
West Rota volcano | active, confirmed | arc volcano | Mariana Arc | 14.3250 | 144.8330 | 1150 | 2005 ROV Hyper-Dolphin; 2003 plume only; 2004 ROV ROPOS did not observe venting |
Nagahama Bay, Iwo-dake Volcano | active, confirmed | arc volcano | Ryukyu Arc | 30.7500 | 130.3330 | 26 | 1994 or earlier intertidal; 2008 or earlier SCUBA subtidal |
Nishinoshima Island | active, inferred | arc volcano | Izu-Bonin Arc | 27.2367 | 140.8783 | 5 | 1975 SCUBA |
Kasuga 1 Seamount | inactive | arc volcano | Mariana Arc | 21.7650 | 143.7100 | 600 | 2003 no plume detected |
Esmeralda Bank | active, confirmed | arc volcano | Mariana Arc | 14.9667 | 145.2500 | 323 | 1990 towed video and TV-grab; 1978 hydrothermal deposits only |
Kagoshima Bay | active, confirmed | arc volcano | Ryukyu Arc | 31.6583 | 130.8000 | 200 | 1993 towed TV system (Haorimushi site); 2007 ROV Hyper-dolphin (Tagiri site) |
Daisan-Kume Knoll | active, confirmed | arc volcano | Ryukyu Arc | 26.3020 | 126.4125 | 1370 | 2015 ROV Kaiko; 2014 ROV Hyper Dolphin 3000 Dive 1761 may have confirmed; 2014 AUV temperature anomaly |
Kasuga 2 Seamount | active, confirmed | arc volcano | Mariana Arc | 21.6000 | 143.6167 | 500 | 1987 submersible Alvin |
Jaco Scar | active, confirmed | arc volcano | Costa Rica fore arc | 9.1175 | -84.8397 | 1790 | 2009 submersible Alvin |
Northwest Rota-1 volcano | active, confirmed | arc volcano | Mariana Arc | 14.6010 | 144.7750 | 599 | 2004 ROV ROPOS; 2003 plume only |
Suiyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 28.5750 | 140.6417 | 1380 | 1991 submersible Shinkai 2000 |
Northwest Eifuku | active, confirmed | arc volcano | Mariana Arc | 21.4850 | 144.0430 | 1604 | 2004 ROV ROPOS; 2003 plume only |
Omuro Hole | active, confirmed | arc volcano | Izu-Bonin Arc | 34.5467 | 139.4417 | 200 | 2012 ROV Hyper-Dolphin |
Forecast | active, confirmed | arc volcano | Mariana Arc | 13.4000 | 143.9166 | 1470 | 1992 submersible Shinkai 6500 |
Kaikata Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 26.7000 | 141.0833 | 930 | 1988 submersible Shinkai 2000; 1985 dredge only |
Nishi-Shichito Ridge | inactive | arc volcano | Izu-Bonin Arc | 31.3667 | 138.7500 | 1600 | NotProvided |
Daikoku volcano | active, confirmed | arc volcano | Mariana Arc | 21.3240 | 144.1940 | 450 | 2004 ROV ROPOS; 2003 plume only |
Kraternaya Bight, Ushishir Volcano | active, confirmed | arc volcano | Kuril Arc | 47.5167 | 152.8000 | 60 | 1985 SCUBA |
Seamount X | active, confirmed | arc volcano | Mariana Arc | 13.2500 | 144.0200 | 1450 | 1994 or earlier submersible Shinkai 6500 |
Kurose Hole | inactive | arc volcano | Izu-Bonin Arc | 33.4000 | 139.6800 | 760 | 1989 inactive; 2009 inactive |
Daiichi-Amami knoll | active, inferred | arc volcano | Ryukyu Arc | 28.4500 | 128.7500 | 350 | 2013 multibeam echo sounder on S/V Takuyo and AUV Gondo |
W Syoyo | active, inferred | arc volcano | Mariana Arc | 22.5080 | 142.5330 | 2150 | 2003 plume only |
Bataan | active, inferred | arc volcano | Luzon/Bicol Arc | 20.0000 | 122.0000 | 2002 or earlier some indications of activity | |
Makhahnas | active, inferred | arc volcano | Mariana Arc | 20.5300 | 144.8833 | 420 | 2003 no plume detected |
Paramushir Island | inactive | arc volcano | Kuril Arc | 50.3300 | 155.5000 | 800 | NotProvided |
Kawio Barat | active, confirmed | arc volcano | Sangihe Arc | 4.8133 | 125.0816 | 1890 | 2003 towed video, CTD/transmissometer, and dredge |
Sumisu Caldera | active, confirmed | arc volcano | Izu-Bonin Arc | 31.4667 | 140.0667 | 690 | 1998 submersible Shinkai 2000 |
South Sarigan Seamount | active, inferred | arc volcano | Mariana Arc | 16.5800 | 145.7800 | 240 | 2013 ROV HyperDolphin (did not confirm activity) |
SW Syoyo | active, inferred | arc volcano | Mariana Arc | 22.3870 | 142.7620 | 1750 | 2003 plume only |
Leyte | active, inferred | arc volcano | Luzon/Bicol Arc | 11.5000 | 124.7000 | 2002 or earlier some indications of activity | |
Ahyi | active, inferred | arc volcano | Mariana Arc | 20.4200 | 145.0300 | 60 | 2003 plume only |
Piip Submarine Volcano | active, confirmed | arc volcano | Aleutian Arc, western | 55.4167 | 167.2717 | 500 | 1990 Mir submersible; 1981 R/V "Vulcanolog" cruise; 1987 (or 1986) echo-sounder fluid discharge |
Pulau Weh | active, confirmed | arc volcano | Banda/Sunda Arc | 5.8166 | 95.3000 | 8 | 1982 or earlier, likely by SCUBA |
Naung | active, inferred | arc volcano | Sangihe Arc | 3.7791 | 125.3750 | 600 | 2001 dredge only, 2003 CTD only |
Minami-Hiyoshi submarine volcano | active, confirmed | arc volcano | Mariana Arc | 23.4970 | 141.9400 | 80 | 2005 ROV HyperDolphin |
Maug Caldera | active, confirmed | arc volcano | Mariana Arc | 20.0200 | 145.2200 | 145 | 2003 SCUBA shallow vents; 2004 ROV ROPOS deeper vents; 2003 plume only deeper vents |
Kagamil Island | active, confirmed | arc volcano | Aleutian Arc, western | 52.9800 | -169.7200 | 5 | 2007 SCUBA |
TOTO Caldera | active, confirmed | arc volcano | Mariana Arc | 12.7167 | 143.5333 | 2960 | 2000 deep-tow camera (later, same year - ROV Kaiko); 1998 or earlier hydrothermal deposits dredged; 1998 plume only |
Akuseki-jima | active, confirmed | arc volcano | Ryukyu Arc | 29.4610 | 129.5970 | 5 | 1993 or earlier, likely by SCUBA |
Myojin Knoll | active, confirmed | arc volcano | Izu-Bonin Arc | 32.1033 | 139.8683 | 1360 | 1996 submersible Shinkai 2000 |
Lembeh Strait | active, confirmed | arc volcano | Sangihe Arc | 1.8000 | 125.2000 | 3 | NotProvided |
Nikko volcano | active, confirmed | arc volcano | Mariana Arc | 23.0833 | 142.3333 | 600 | 1992 submersible Shinkai 6500; 1979 first observed discolored water above the seamount |
NE Anatahan submarine volcano | active, inferred | arc volcano | Mariana Arc | 16.3750 | 145.7250 | 460 | 2003 multibeam and sidescan sonar only |
Chamorro volcano | active, confirmed | arc volcano | Mariana Arc | 20.8100 | 144.7050 | 896 | 2016 ROV Deep Discoverer; 2003 plume only |
Kodakara-jima | active, confirmed | arc volcano | Ryukyu Arc | 29.2166 | 129.3333 | 10 | 1993 or earlier, likely by SCUBA |
Myojinsho Caldera | active, inferred | arc volcano | Izu-Bonin Arc | 31.8833 | 139.9500 | 1110 | 1988 deposits only; 2005 plume only |
Sumisu Rift | active, inferred | back-arc spreading center | Izu-Bonin back-arc | 31.1000 | 139.8917 | 1600 | 1987 submersible Alvin inactive chimneys only |
Yokosuka | active, confirmed | back-arc spreading center | Okinawa Trough | 25.2638 | 124.3733 | 2190 | 2016 ROV Kaiko; 2014 plume only |
Mariana Trough, Central Trough | active, confirmed | back-arc spreading center | Mariana Trough | 18.0467 | 144.7533 | 3676 | 1987 submersible Alvin |
Kueishan Island, offshore | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8333 | 122.0000 | 1200 | 2008 or earlier |
Higashi-Ensei | active, confirmed | back-arc spreading center | Okinawa Trough | 28.4393 | 128.1724 | 1220 | 2016 ROV Kaiko dives 723 and 724 |
Alice Springs Field | active, confirmed | back-arc spreading center | Mariana Trough | 18.2103 | 144.7073 | 3640 | 1987 submersible Alvin; 1982 plume only |
Futagoyama | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8674 | 123.3081 | 1270 | 2016 ROV Kaiko dive 717 |
Pika | active, confirmed | back-arc spreading center | Mariana Trough | 12.9183 | 143.6483 | 2990 | 2003 submersible Shinkai 6500; 2003 plume only |
SPOT, Hatoma Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8550 | 123.8410 | 1520 | 1999 submersible Shinkai 2000 |
Bayonnaise Knoll caldera | active, inferred | back-arc spreading center | Izu-Bonin back-arc | 31.9667 | 139.7333 | 900 | 2003 temperature anomalies, but camera survey observed inactive vent deposits |
Mariana Trough, plume 2 | active, inferred | back-arc spreading center | Mariana Trough | 12.7610 | 143.4730 | 2950 | 2003 plume only |
Kueishan Island | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8333 | 121.9500 | 30 | 1999, likely by SCUBA |
Okinawa Trough, Site ES2 | active, inferred | back-arc spreading center | Okinawa Trough | 28.8137 | 128.1028 | 779 | 1992 dredge only |
Yoron Hole | active, confirmed | back-arc spreading center | Okinawa Trough | 27.4916 | 127.5333 | 590 | 2010 ROV Hyperdolphin |
Higa | active, confirmed | back-arc spreading center | Okinawa Trough | 26.5550 | 126.2233 | 1485 | 2015 ROV Kaiko |
Philippine Ridge, West Philippine Basin | inactive | back-arc spreading center | West Philippine Basin | 12.0000 | 131.4170 | 5800 | NotProvided |
SPOT, Yonaguni Knoll IV | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8490 | 122.7000 | 1385 | 2000 submersibles Shinkai 2000 and Shinkai 6500 |
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 |
Tarama Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 25.0916 | 124.5416 | 1990 | 2009 ROV HyperDolphin |
Tangyin | active, inferred | back-arc spreading center | Okinawa Trough | 25.0667 | 122.5667 | 1206 | 2014 likely by dredging or ROV during the HOBAB3 cruise on R/V Kexue |
Parece Vela Ridge, Philippine Sea | inactive | back-arc spreading center | Parece Vela Basin | 16.0000 | 139.1667 | 5000 | NotProvided |
North Knoll, Iheya Ridge | active, confirmed | back-arc spreading center | Okinawa Trough | 27.7908 | 126.8966 | 1100 | 1995 deep tow survey |
Mariana Trough, 14.5 N | active, inferred | back-arc spreading center | Mariana Trough | 14.4870 | 144.0940 | 4120 | 2015 plume only |
Mariana Mounds | active, confirmed | back-arc spreading center | Mariana Trough | 18.0333 | 144.2833 | 3600 | 1987 submersible Alvin |
Natsushima 84-1 Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 27.5750 | 127.1417 | 1600 | 1986 submersible Shinkai 2000 |
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 |
Snail | active, confirmed | back-arc spreading center | Mariana Trough | 12.9533 | 143.6200 | 2880 | 2003 ROV Jason II; 2003 plume only |
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 |
Hafa Adai | active, confirmed | back-arc spreading center | Mariana Trough | 16.9570 | 144.8680 | 3294 | 2016 ROV Deep Discoverer; 2015 AUV Sentry plume mapping |
Mariana Trough, 16.5 N | active, inferred | back-arc spreading center | Mariana Trough | 16.4010 | 144.8700 | 3829 | 2015 plume only |
Izena Cauldron | active, confirmed | back-arc spreading center | Okinawa Trough | 27.2667 | 127.0833 | 1610 | 1988 submersible Shinkai 2000 |
Perseverance | active, confirmed | back-arc spreading center | Mariana Trough | 15.4802 | 144.5077 | 3935 | 2016 ROV SuBastian; 2015 AUV Sentry plume mapping |
Mariana Trough, 18.2 N | active, inferred | back-arc spreading center | Mariana Trough | 18.1080 | 144.7380 | 3916 | 2015 plume only |
Okinawa Trough, Site ES1 | active, inferred | back-arc spreading center | Okinawa Trough | 30.3303 | 129.0827 | 521 | 1992 dredge only |
13 N Ridge Site | active, confirmed | back-arc spreading center | Mariana Trough | 13.0987 | 143.6886 | 3036 | 2000 deep-tow camera (later, same year - ROV Kaiko) |
Sakai | active, confirmed | back-arc spreading center | Okinawa Trough | 27.5481 | 126.9895 | 1600 | 1988 submersible Shinkai 2000; 1987 plume only |
Loihi Seamount | active, confirmed | intra-plate volcano | Central Pacific | 18.9500 | -155.2500 | 4800 | 1985 bottom photography R/V Hakuho Maru; 1987 submersible Alvin |
Hawaiian Ridge | inactive | intra-plate volcano | Central Pacific | 15.0000 | -157.5000 | 5000 | 1987 or earlier |
EPR, southern 17 N segment | active, inferred | mid-ocean ridge | N EPR | 16.5800 | -105.3000 | 2700 | 1997 plume only |
Alarcon Rise, Ja Sit | active, confirmed | mid-ocean ridge | Gulf of California | 23.3765 | -108.5315 | 2304 | 2012 ROV Doc Ricketts |
AHA Field | active, confirmed | mid-ocean ridge | N EPR | 1.7333 | -102.2830 | 2850 | 2000 towed imaging ARGO-II |
Main Endeavour Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9487 | -129.0981 | 2220 | 1984 submersible Alvin; 1982 dredge only |
Gorda Ridge, EP96A | active, inferred | mid-ocean ridge | Gorda Ridge | 42.6790 | -126.7820 | 3150 | 1996 camera/temperature tow followed by ROV did not confirm hydrothermal activity |
EPR, 13 N, SE Seamount | inactive | mid-ocean ridge | N EPR | 12.7000 | -103.8600 | 2500 | 1981 towed camera, dredging, and plume did not confirm activity; 1982 and 1984 submersible Cyana did not confirm activity |
Eye of Mordor Seamount | active, inferred | mid-ocean ridge | Galapagos Rift | 1.9410 | -91.3100 | 1555 | 2005 plume only |
Axial Seamount, CASM | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9892 | -130.0272 | 1580 | 1983 submersible Pisces IV |
EPR, 9 50'N | active, confirmed | mid-ocean ridge | N EPR | 9.8300 | -104.2900 | 2520 | 1989 Argo I towed video |
EPR, 10 02'N | active, confirmed | mid-ocean ridge | N EPR | 10.0330 | -104.3300 | 2560 | 1992 submersible Alvin |
Magic Mountain, 3-km south | active, inferred | mid-ocean ridge | Explorer Ridge | 49.7250 | -130.2667 | 1850 | 2002 AUV ABE plume only |
NESCA | active, confirmed | mid-ocean ridge | Gorda Ridge | 41.0000 | -127.4917 | 3300 | 1988 submersible Alvin; 1986 dredge and photographs did not confirm activity |
Teotihuacan | active, confirmed | mid-ocean ridge | N EPR | 15.7333 | -105.4333 | 2300 | 2010 submersible Nautile; 1997 plume only |
Alarcon Rise, Meyibo | active, confirmed | mid-ocean ridge | Gulf of California | 23.3553 | -108.5443 | 2295 | 2012 ROV Doc Ricketts |
EPR, 3.9 N offset | active, confirmed | mid-ocean ridge | N EPR | 3.9170 | -102.2330 | 2875 | 1989 or earlier Deep Tow photographs (cruise RIFTS or PAPATUA) |
High-Rise Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9666 | -129.0894 | 2200 | 1988 submersible Alvin |
EPR, 11 07'N | active, inferred | mid-ocean ridge | N EPR | 11.1330 | -103.7800 | 2580 | 1988 submersible Alvin dive #1989 (need reference to confirm activity); 1991 plume only |
E Eye of Mordor | inactive | mid-ocean ridge | Galapagos Rift | 1.9058 | -91.2310 | 1600 | 2005 towed video Medea found inactive chimneys |
EPR, Manzanillo Spreading Segment | active, inferred | mid-ocean ridge | N EPR | 18.2500 | -106.3000 | 2600 | 1997 plume only |
West Valley | active, inferred | mid-ocean ridge | JdF Ridge | 48.4833 | -129.0417 | 3000 | 1987 and 1988 deposits only (towed camera did not confirm activity) |
EPR, 8 53'N | active, inferred | mid-ocean ridge | N EPR | 8.9000 | -104.2000 | 2580 | 1991 plume only |
Central Cleft, off-axis | active, confirmed | mid-ocean ridge | JdF Ridge | 44.7583 | -130.2750 | 2200 | 2000 ROV Tiburon |
Guaymas Basin, Southern Trough | active, confirmed | mid-ocean ridge | Gulf of California | 27.0148 | -111.4109 | 2000 | 1982 submersible Alvin; 1980 DeepTow CTD and dredging |
EPR, 13 N | active, confirmed | mid-ocean ridge | N EPR | 12.8333 | -103.9500 | 2630 | 1982 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity |
Alarcon Rise, Tzab-ek | active, confirmed | mid-ocean ridge | Gulf of California | 23.3526 | -108.5597 | 2249 | 2015 ROV Doc Ricketts |
EPR, 8 38'N | active, confirmed | mid-ocean ridge | N EPR | 8.6333 | -104.2000 | 2550 | 2003 submersible Alvin; 1989 dredge only; 2002 plume only |
Mothra Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9233 | -129.1082 | 2270 | 1996 ROV ROPOS; 1986 plume only |
EPR, mid 17 N segment | active, inferred | mid-ocean ridge | N EPR | 17.0000 | -105.3800 | 2750 | 1997 plume only |
EPR, 11 17'N | active, confirmed | mid-ocean ridge | N EPR | 11.2833 | -103.7583 | 2560 | 1984 Angus camera (or 1985 Argo video) tow with temperature |
W Eye of Mordor | inactive | mid-ocean ridge | Galapagos Rift | 1.9707 | -91.3900 | 1600 | 2005 towed video Medea observed inactive chimneys |
Dellwood Seamount | inactive | mid-ocean ridge | Explorer Ridge | 50.7470 | -130.8961 | 800 | 1974 or earlier deposits only; 2018 ROV Hercules inactive |
Axial Seamount, International District | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9266 | -129.9795 | 1544 | 1986 submersible Pisces IV |
Stockwork | active, inferred | mid-ocean ridge | JdF Ridge | 47.9000 | -129.1240 | 2300 | 2005 submersible Alvin (need publication to determine if confirmed) |
Galapagos Rift, 95.5 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.6700 | -95.4500 | 3200 | 1990 submersible Alvin did not confirm activity |
Floc | active, confirmed | mid-ocean ridge | JdF Ridge | 46.3133 | -129.7050 | 2290 | 1993 DEEPTOW and submersible Alvin |
EPR, 13 N, Marginal High | active, confirmed | mid-ocean ridge | N EPR | 12.7090 | -103.9160 | 2650 | 1984 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity |
Alarcon Rise/Tamayo intersection | active, inferred | mid-ocean ridge | Gulf of California | 23.2336 | -108.6168 | 2358 | 2015 ROV Doc Ricketts did not confirm activity |
DSDP Hole 504B | inactive | mid-ocean ridge | Galapagos Rift | 1.2267 | -83.7300 | 3500 | NotProvided |
EPR, northern 17 N segment | active, inferred | mid-ocean ridge | N EPR | 17.6700 | -105.0050 | 2800 | 1997 plume only |
EPR, 11 24'N | active, confirmed | mid-ocean ridge | N EPR | 11.4000 | -103.7800 | 2580 | 1990 submersible Alvin; 1988 submersible Alvin dive #1994 (need reference to confirm activity) |
Pegasus | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7500 | -88.2000 | 2000 | 2011 ROV Little Hercules |
Galapagos Mounds | active, confirmed | mid-ocean ridge | Galapagos Rift | 1.4500 | -86.1665 | 2700 | 1977 submersible Alvin |
Explorer Deep | inactive | mid-ocean ridge | Explorer Ridge | 50.1000 | -129.7500 | 3200 | 1969, deposits only |
Gorda Ridge, GR-15 | active, inferred | mid-ocean ridge | Gorda Ridge | 42.9500 | -126.5500 | 3365 | 1985 plume only |
Precious Stone Mountain | active, confirmed | mid-ocean ridge | Galapagos Rift | 1.2200 | -101.4900 | 1700 | 2009 deep-tow video and TV grab |
Hess Deep | inactive | mid-ocean ridge | Galapagos Rift | 2.2500 | -101.5000 | 5100 | NotProvided |
Source | active, confirmed | mid-ocean ridge | JdF Ridge | 46.1550 | -129.8100 | 2055 | 1993 submersible Alvin |
EPR, 14 N seamount | inactive | mid-ocean ridge | N EPR | 14.1500 | -104.3667 | 2600 | NotProvided |
Ringvent | active, confirmed | mid-ocean ridge | Gulf of California | 27.5083 | -111.6792 | 1740 | 2016 submersible Alvin; 2009 towed camera/CTD/bottles |
Galapagos Rift, 85 50'W | inactive | mid-ocean ridge | Galapagos Rift | 0.7500 | -85.8333 | 2600 | 1988 or earlier submersible observations |
Feather Duster | active, confirmed | mid-ocean ridge | N EPR | 10.9267 | -103.6767 | 2520 | 1984 towed camera and submersible Alvin |
Uka Pacha | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7700 | -88.3000 | 2100 | 2011 ROV Little Hercules |
ET | active, inferred | mid-ocean ridge | JdF Ridge | 48.1993 | -128.9257 | 2500 | NotProvided |
North Cleft, low temperature | active, confirmed | mid-ocean ridge | JdF Ridge | 44.8833 | -130.2667 | 2250 | 1987-1989 camera/CTD tows |
Galapagos Rift, 94.4 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.5300 | -94.3300 | 2400 | 2005 plume only |
Split Seamount | active, inferred | mid-ocean ridge | JdF Ridge | 47.6400 | -128.9667 | 2350 | 1990 camera tow (need reference to check if activity confirmed) |
SESCA | active, inferred | mid-ocean ridge | Gorda Ridge | 40.7500 | -127.5200 | 3300 | 1986 sediments and heat-flow measurements |
EPR, Seamount 5 | active, inferred | mid-ocean ridge | N EPR | 13.0000 | -103.5000 | 1100 | 1988 or earlier camera and/or submersible (need to check reference) |
Tempus Fugit | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7683 | -85.9100 | 2560 | 2011 ROV Little Hercules |
Calyfield | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.8300 | -89.6083 | 1660 | 2002 submersible Alvin |
Wagner Basin | active, inferred | mid-ocean ridge | Gulf of California | 31.0666 | -114.0833 | 120 | 2007 echosounder and grab samples |
Tevnia | active, inferred | mid-ocean ridge | N EPR | 10.3333 | -103.5533 | 2925 | 1994 submersible Alvin did not confirm activity |
Sasquatch Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9969 | -129.0662 | 2200 | 2000 submersible Alvin |
Sea Cliff | active, confirmed | mid-ocean ridge | Gorda Ridge | 42.7550 | -126.7083 | 2800 | 1988 submersible Sea Cliff; 1985 plume only; 1986 dredge and camera tow did not confirm activity |
Galapagos Rift, 94.7 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.6000 | -94.7750 | 2690 | 2005 plume only |
Not Dead Yet | active, confirmed | mid-ocean ridge | JdF Ridge | 46.6899 | -129.3772 | 2419 | 2007 ROV Jason II; 1991 camera tow did not confirm activity |
Guaymas Basin, Northern Trough | inactive | mid-ocean ridge | Gulf of California | 27.3050 | -111.5067 | 2000 | 1977 submersible Seacliff (hydrothermal deposits only) |
EPR, southern 16 N segment | active, inferred | mid-ocean ridge | N EPR | 15.5000 | -105.4000 | 2300 | 1997 plume only |
E Los Huellos Caldera | active, inferred | mid-ocean ridge | Galapagos Rift | 0.9500 | -90.5300 | 1600 | 2005 plume only; 2005 towed video Medea did not confirm activity |
Consag Basin | active, inferred | mid-ocean ridge | Gulf of California | 30.6333 | -113.9083 | 140 | 2007 echosounder and grab samples |
EPR, 10 44.6'N | active, confirmed | mid-ocean ridge | N EPR | 10.7433 | -103.6500 | 2580 | 1985 Argo video tow with temperature |
EPR, 9 17'N | active, confirmed | mid-ocean ridge | N EPR | 9.2800 | -104.2166 | 2585 | 1989 Argo I towed video |
Salty Dawg Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9822 | -129.0756 | 2200 | 1995 submersible Alvin, followed by ROV ROPOS |
South Cleft | active, confirmed | mid-ocean ridge | JdF Ridge | 44.6667 | -130.3667 | 2250 | 1981 deep-tow photographs; 1984 submersible Alvin |
Galapagos Rift, 95 W | inactive | mid-ocean ridge | Galapagos Rift | 2.5000 | -95.1667 | 2600 | NotProvided |
Flow | active, confirmed | mid-ocean ridge | JdF Ridge | 46.5250 | -129.5783 | 2390 | 1993 ROV ROPOS |
EPR, 21 N | active, confirmed | mid-ocean ridge | N EPR | 20.8333 | -109.0833 | 2600 | 1979 submersible Alvin; 1978 submersible Cyana discovered mineral deposits only |
EPR 87D1 Seamount | inactive | mid-ocean ridge | N EPR | 11.5333 | -103.8600 | 2090 | NotProvided |
W Los Huellos Caldera | active, inferred | mid-ocean ridge | Galapagos Rift | 1.0000 | -90.6000 | 1600 | 2005 plume only |
EPR, 10 08'N | active, inferred | mid-ocean ridge | N EPR | 10.1300 | -104.3300 | 2580 | 1983 towed camera and temperature measurements (no direct observations/sampling of hydrothermal fluid) |
Guaymas Basin, Northern Trough_2 | active, confirmed | mid-ocean ridge | Gulf of California | 27.4110 | -111.3879 | 1800 | 2015 ROV Hybis |
EPR, 9 30'N | active, confirmed | mid-ocean ridge | N EPR | 9.5167 | -104.2414 | 2580 | 1989 Argo I towed video |
Middle Valley, Dead Dog Vent Field | active, confirmed | mid-ocean ridge | JdF Ridge | 48.4560 | -128.7088 | 2450 | 1990 HOV Alvin |
East Blanco Depression | active, confirmed | mid-ocean ridge | JdF Ridge | 44.2170 | -129.6250 | 3460 | 1994 ROV U.S. Navy's Advanced Tethered Vehicle |
Navidad | active, confirmed | mid-ocean ridge | Galapagos Rift | 2.5300 | -94.0750 | 2380 | 2005 towed video Medea |
Brown Bear Seamount | inactive | mid-ocean ridge | JdF Ridge | 46.0333 | -130.5500 | 1500 | NotProvided |
EPR/Tamayo intersection | active, inferred | mid-ocean ridge | N EPR | 22.9333 | -108.0667 | 3200 | 1979 submersible Alvin did not confirm activity |
EPR, 11 30'N | active, inferred | mid-ocean ridge | N EPR | 11.4833 | -103.7833 | 2422 | 1981 towed camera and plume did not confirm activity; 1988 submersible Alvin dive #1996 (need reference to confirm activity) |
Rose Garden | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.8058 | -86.2267 | 2550 | 1977 submersible Alvin; 1976 plume and photographs of clam shells did not confirm activity (note: Rose Garden is used here as the name of the vent field, but Rose Garden vent site itself not discovered until 1979) |
EPR, 9 33'N | active, confirmed | mid-ocean ridge | N EPR | 9.5583 | -104.2500 | 2574 | 1989 Argo I towed video; 1991 submersible Alvin |
Pescadero Basin, Auka | active, confirmed | mid-ocean ridge | Gulf of California | 23.9567 | -108.8618 | 3685 | 2015 ROV Doc Ricketts; 1990 or earlier plume only |
Medusa | active, confirmed | mid-ocean ridge | N EPR | 9.1404 | -104.2065 | 2580 | 2007 ROV Jason II; 1991 plume only |
Middle Valley, Bent Hill Massive Sulfide | active, confirmed | mid-ocean ridge | JdF Ridge | 48.4341 | -128.6812 | 2440 | 1990 HOV Alvin, 1985 deposits only |
Gorda Ridge, 41 30'N | inactive | mid-ocean ridge | Gorda Ridge | 41.5167 | -127.4500 | 3350 | 1984 deposits only |
EPR, 11 42'N | active, confirmed | mid-ocean ridge | N EPR | 11.7000 | -103.8500 | 2580 | 1984 Angus camera (or 1985 Argo video) tow with temperature |
Galapagos Rift, 93.7 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.4970 | -93.7700 | 2220 | 2005 plume only |
North Cleft, high temperature | active, confirmed | mid-ocean ridge | JdF Ridge | 44.9800 | -130.2000 | 2300 | 1987 camera/CTD tows discovered low-temperature vents; 1988 submersible Alvin sampled low-temperature vents; 1990 submersible Alvin discovered black smoker |
Green Seamount | inactive | mid-ocean ridge | N EPR | 20.8033 | -109.2833 | 2000 | 1982 submersible Alvin observed only inactive |
EPR, 9 40'N | active, confirmed | mid-ocean ridge | N EPR | 9.6500 | -104.2600 | 2572 | 1989 Argo I towed video; 1991 submersible Alvin |
Alarcon Rise/Pescadero intersection | active, inferred | mid-ocean ridge | Gulf of California | 23.6423 | -108.3948 | 2384 | 2015 ROV Doc Ricketts did not confirm activity |
Mounds and Microbes | active, confirmed | mid-ocean ridge | N EPR | 9.4500 | -104.5383 | 2950 | 2002 submersible Alvin; 1994 submersible Alvin did not confirm activity |
Baby Bare Seamount | active, confirmed | mid-ocean ridge | JdF Ridge | 47.7100 | -127.7870 | 2600 | 1995 submersible Alvin |
Gorda Ridge, EP96B | active, inferred | mid-ocean ridge | Gorda Ridge | 42.5500 | -126.8333 | 3400 | 1984 deposits only; 1996 plume only |
EPR, 11 45'N, OSC | active, inferred | mid-ocean ridge | N EPR | 11.7775 | -103.8300 | 2580 | 1984 Angus camera (or 1985 Argo video) tow with temperature; 1988 submersible Alvin dive #2004 (need reference to confirm activity) |
Iguanas-Pinguinos | active, confirmed | mid-ocean ridge | Galapagos Rift | 2.1000 | -91.9350 | 1640 | 2005 towed video Medea |
Axial Seamount, ASHES | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9333 | -130.0140 | 1540 | 1984 submersible Alvin |
Red Seamount | active, confirmed | mid-ocean ridge | N EPR | 20.8033 | -109.3783 | 2000 | 1982 submersible Alvin |
Magic Mountain | active, confirmed | mid-ocean ridge | Explorer Ridge | 49.7500 | -130.2667 | 1850 | 1984 submersible Pisces IV |
EPR, 9 47'N | active, confirmed | mid-ocean ridge | N EPR | 9.7750 | -104.2802 | 2560 | 1989 Argo I towed video; 1991 submersible Alvin |
Bahia Concepcion | active, confirmed | other | Coastal Baja California | 26.6667 | -111.8333 | 15 | 1968 or earlier, likely by SCUBA |
White Point, Palos Verde, California | active, confirmed | other | Coastal California | 33.7000 | -118.3167 | 10 | 1984 or earlier, likely by SCUBA |
Punta Banda | active, confirmed | other | Coastal Baja California | 31.7500 | -116.7500 | 30 | 1960's commercial abalone divers |
Punta Mita, Bahia de Banderas | active, confirmed | other | Coastal Mexico | 20.7700 | -105.5200 | 10 | 1997 photo/video most likely by SCUBA |
San Felipe | active, inferred | other | Coastal Baja California | 31.0000 | -114.8000 | 1 | 1982 or earlier, likely from shore |
Dorado Outcrop | active, confirmed | other | 9.0800 | -87.0950 | 3000 | 2013 ROV Jason Dive J2-751 |