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 |
---|---|---|---|---|---|---|---|
Navidad | active, confirmed | mid-ocean ridge | Galapagos Rift | 2.5300 | -94.0750 | 2380 | 2005 towed video Medea |
Axial Seamount, International District | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9266 | -129.9795 | 1544 | 1986 submersible Pisces IV |
Middle Valley, Dead Dog Vent Field | active, confirmed | mid-ocean ridge | JdF Ridge | 48.4560 | -128.7088 | 2450 | 1990 HOV Alvin |
Kagamil Island | active, confirmed | arc volcano | Aleutian Arc, western | 52.9800 | -169.7200 | 5 | 2007 SCUBA |
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) |
White Point, Palos Verde, California | active, confirmed | other | Coastal California | 33.7000 | -118.3167 | 10 | 1984 or earlier, likely by SCUBA |
Izena Cauldron | active, confirmed | back-arc spreading center | Okinawa Trough | 27.2667 | 127.0833 | 1610 | 1988 submersible Shinkai 2000 |
Guaymas Basin, Northern Trough_2 | active, confirmed | mid-ocean ridge | Gulf of California | 27.4110 | -111.3879 | 1800 | 2015 ROV Hybis |
Medusa | active, confirmed | mid-ocean ridge | N EPR | 9.1404 | -104.2065 | 2580 | 2007 ROV Jason II; 1991 plume only |
Forecast | active, confirmed | arc volcano | Mariana Arc | 13.4000 | 143.9166 | 1470 | 1992 submersible Shinkai 6500 |
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 |
EPR, 9 33'N | active, confirmed | mid-ocean ridge | N EPR | 9.5583 | -104.2500 | 2574 | 1989 Argo I towed video; 1991 submersible Alvin |
Precious Stone Mountain | active, confirmed | mid-ocean ridge | Galapagos Rift | 1.2200 | -101.4900 | 1700 | 2009 deep-tow video and TV grab |
Middle Valley, Bent Hill Massive Sulfide | active, confirmed | mid-ocean ridge | JdF Ridge | 48.4341 | -128.6812 | 2440 | 1990 HOV Alvin, 1985 deposits only |
Ringvent | active, confirmed | mid-ocean ridge | Gulf of California | 27.5083 | -111.6792 | 1740 | 2016 submersible Alvin; 2009 towed camera/CTD/bottles |
Punta Banda | active, confirmed | other | Coastal Baja California | 31.7500 | -116.7500 | 30 | 1960's commercial abalone divers |
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 |
Sakai | active, confirmed | back-arc spreading center | Okinawa Trough | 27.5481 | 126.9895 | 1600 | 1988 submersible Shinkai 2000; 1987 plume only |
Hafa Adai | active, confirmed | back-arc spreading center | Mariana Trough | 16.9570 | 144.8680 | 3294 | 2016 ROV Deep Discoverer; 2015 AUV Sentry plume mapping |
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 |
Punta Mita, Bahia de Banderas | active, confirmed | other | Coastal Mexico | 20.7700 | -105.5200 | 10 | 1997 photo/video most likely by SCUBA |
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 |
Seamount X | active, confirmed | arc volcano | Mariana Arc | 13.2500 | 144.0200 | 1450 | 1994 or earlier submersible Shinkai 6500 |
Jaco Scar | active, confirmed | arc volcano | Costa Rica fore arc | 9.1175 | -84.8397 | 1790 | 2009 submersible Alvin |
North Cleft, low temperature | active, confirmed | mid-ocean ridge | JdF Ridge | 44.8833 | -130.2667 | 2250 | 1987-1989 camera/CTD tows |
Minami-Hiyoshi submarine volcano | active, confirmed | arc volcano | Mariana Arc | 23.4970 | 141.9400 | 80 | 2005 ROV HyperDolphin |
Iguanas-Pinguinos | active, confirmed | mid-ocean ridge | Galapagos Rift | 2.1000 | -91.9350 | 1640 | 2005 towed video Medea |
EPR, 9 40'N | active, confirmed | mid-ocean ridge | N EPR | 9.6500 | -104.2600 | 2572 | 1989 Argo I towed video; 1991 submersible Alvin |
Yoron Hole | active, confirmed | back-arc spreading center | Okinawa Trough | 27.4916 | 127.5333 | 590 | 2010 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 |
Baby Bare Seamount | active, confirmed | mid-ocean ridge | JdF Ridge | 47.7100 | -127.7870 | 2600 | 1995 submersible Alvin |
Taketomi Thermal Area | active, confirmed | arc volcano | Ryukyu Arc | 24.3483 | 124.1017 | 23 | 1987 or earlier, likely by SCUBA |
Tempus Fugit | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7683 | -85.9100 | 2560 | 2011 ROV Little Hercules |
Mariana Mounds | active, confirmed | back-arc spreading center | Mariana Trough | 18.0333 | 144.2833 | 3600 | 1987 submersible Alvin |
Axial Seamount, ASHES | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9333 | -130.0140 | 1540 | 1984 submersible Alvin |
Kueishan Island, offshore | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8333 | 122.0000 | 1200 | 2008 or earlier |
Myojin Knoll | active, confirmed | arc volcano | Izu-Bonin Arc | 32.1033 | 139.8683 | 1360 | 1996 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 |
AHA Field | active, confirmed | mid-ocean ridge | N EPR | 1.7333 | -102.2830 | 2850 | 2000 towed imaging ARGO-II |
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 |
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 |
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 |
Tarama Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 25.0916 | 124.5416 | 1990 | 2009 ROV HyperDolphin |
Chamorro volcano | active, confirmed | arc volcano | Mariana Arc | 20.8100 | 144.7050 | 896 | 2016 ROV Deep Discoverer; 2003 plume only |
Main Endeavour Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9487 | -129.0981 | 2220 | 1984 submersible Alvin; 1982 dredge only |
Hot Beach, Mendeleev Volcano | active, confirmed | arc volcano | Kuril Arc | 43.9760 | 145.7360 | 1 | 1990 or earlier, from the beach |
Snail | active, confirmed | back-arc spreading center | Mariana Trough | 12.9533 | 143.6200 | 2880 | 2003 ROV Jason II; 2003 plume only |
Axial Seamount, CASM | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9892 | -130.0272 | 1580 | 1983 submersible Pisces IV |
Dorado Outcrop | active, confirmed | other | 9.0800 | -87.0950 | 3000 | 2013 ROV Jason Dive J2-751 | |
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) |
EPR, 9 50'N | active, confirmed | mid-ocean ridge | N EPR | 9.8300 | -104.2900 | 2520 | 1989 Argo I towed video |
South Cleft | active, confirmed | mid-ocean ridge | JdF Ridge | 44.6667 | -130.3667 | 2250 | 1981 deep-tow photographs; 1984 submersible Alvin |
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 |
Teotihuacan | active, confirmed | mid-ocean ridge | N EPR | 15.7333 | -105.4333 | 2300 | 2010 submersible Nautile; 1997 plume only |
High-Rise Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9666 | -129.0894 | 2200 | 1988 submersible Alvin |
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 |
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 |
Kawio Barat | active, confirmed | arc volcano | Sangihe Arc | 4.8133 | 125.0816 | 1890 | 2003 towed video, CTD/transmissometer, and dredge |
SPOT, Hatoma Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8550 | 123.8410 | 1520 | 1999 submersible Shinkai 2000 |
Mokuyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 28.3200 | 140.5800 | 1200 | 1990 submersible Shinkai 2000 |
Yokosuka | active, confirmed | back-arc spreading center | Okinawa Trough | 25.2638 | 124.3733 | 2190 | 2016 ROV Kaiko; 2014 plume only |
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 |
Lembeh Strait | active, confirmed | arc volcano | Sangihe Arc | 1.8000 | 125.2000 | 3 | NotProvided |
East Blanco Depression | active, confirmed | mid-ocean ridge | JdF Ridge | 44.2170 | -129.6250 | 3460 | 1994 ROV U.S. Navy's Advanced Tethered Vehicle |
Kasuga 3 Seamount | active, confirmed | arc volcano | Mariana Arc | 21.3833 | 143.6000 | 1140 | 1987 submersible Alvin |
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 |
Mothra Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9233 | -129.1082 | 2270 | 1996 ROV ROPOS; 1986 plume 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) |
Higashi-Ensei | active, confirmed | back-arc spreading center | Okinawa Trough | 28.4393 | 128.1724 | 1220 | 2016 ROV Kaiko dives 723 and 724 |
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 |
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) |
Pulau Weh | active, confirmed | arc volcano | Banda/Sunda Arc | 5.8166 | 95.3000 | 8 | 1982 or earlier, likely by SCUBA |
Kueishan Island | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8333 | 121.9500 | 30 | 1999, likely by SCUBA |
Doyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 27.6833 | 140.8167 | 520 | 1990 submersible Shinkai 2000 |
Banua Wuhu submarine volcano | active, confirmed | arc volcano | Sangihe Arc | 3.1380 | 125.4910 | 10 | 1996 or earlier, likely by SCUBA |
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 |
Galapagos Mounds | active, confirmed | mid-ocean ridge | Galapagos Rift | 1.4500 | -86.1665 | 2700 | 1977 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 |
Ruby | active, confirmed | arc volcano | Mariana Arc | 15.6200 | 145.5700 | 214 | 2006 ROV Jason II; 2003 plume only |
Floc | active, confirmed | mid-ocean ridge | JdF Ridge | 46.3133 | -129.7050 | 2290 | 1993 DEEPTOW and submersible Alvin |
Futagoyama | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8674 | 123.3081 | 1270 | 2016 ROV Kaiko dive 717 |
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) |
Mariana Trough, Central Trough | active, confirmed | back-arc spreading center | Mariana Trough | 18.0467 | 144.7533 | 3676 | 1987 submersible Alvin |
Akuseki-jima | active, confirmed | arc volcano | Ryukyu Arc | 29.4610 | 129.5970 | 5 | 1993 or earlier, likely by SCUBA |
SPOT, Yonaguni Knoll IV | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8490 | 122.7000 | 1385 | 2000 submersibles Shinkai 2000 and Shinkai 6500 |
Loihi Seamount | active, confirmed | intra-plate volcano | Central Pacific | 18.9500 | -155.2500 | 4800 | 1985 bottom photography R/V Hakuho Maru; 1987 submersible Alvin |
Pegasus | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7500 | -88.2000 | 2000 | 2011 ROV Little Hercules |
Red Seamount | active, confirmed | mid-ocean ridge | N EPR | 20.8033 | -109.3783 | 2000 | 1982 submersible Alvin |
East Diamante volcano | active, confirmed | arc volcano | Mariana Arc | 15.9300 | 145.6700 | 457 | 2004 ROV ROPOS; 2003 plume only |
Source | active, confirmed | mid-ocean ridge | JdF Ridge | 46.1550 | -129.8100 | 2055 | 1993 submersible Alvin |
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 |
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 |
Feather Duster | active, confirmed | mid-ocean ridge | N EPR | 10.9267 | -103.6767 | 2520 | 1984 towed camera and submersible Alvin |
Alice Springs Field | active, confirmed | back-arc spreading center | Mariana Trough | 18.2103 | 144.7073 | 3640 | 1987 submersible Alvin; 1982 plume only |
Kodakara-jima | active, confirmed | arc volcano | Ryukyu Arc | 29.2166 | 129.3333 | 10 | 1993 or earlier, likely by SCUBA |
Calyfield | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.8300 | -89.6083 | 1660 | 2002 submersible Alvin |
Alarcon Rise, Ja Sit | active, confirmed | mid-ocean ridge | Gulf of California | 23.3765 | -108.5315 | 2304 | 2012 ROV Doc Ricketts |
Kasuga 2 Seamount | active, confirmed | arc volcano | Mariana Arc | 21.6000 | 143.6167 | 500 | 1987 submersible Alvin |
Kraternaya Bight, Ushishir Volcano | active, confirmed | arc volcano | Kuril Arc | 47.5167 | 152.8000 | 60 | 1985 SCUBA |
Uka Pacha | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7700 | -88.3000 | 2100 | 2011 ROV Little Hercules |
Bahia Concepcion | active, confirmed | other | Coastal Baja California | 26.6667 | -111.8333 | 15 | 1968 or earlier, likely by SCUBA |
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 |
North Knoll, Iheya Ridge | active, confirmed | back-arc spreading center | Okinawa Trough | 27.7908 | 126.8966 | 1100 | 1995 deep tow survey |
Higa | active, confirmed | back-arc spreading center | Okinawa Trough | 26.5550 | 126.2233 | 1485 | 2015 ROV Kaiko |
Pika | active, confirmed | back-arc spreading center | Mariana Trough | 12.9183 | 143.6483 | 2990 | 2003 submersible Shinkai 6500; 2003 plume only |
EPR, 10 02'N | active, confirmed | mid-ocean ridge | N EPR | 10.0330 | -104.3300 | 2560 | 1992 submersible Alvin |
Suiyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 28.5750 | 140.6417 | 1380 | 1991 submersible Shinkai 2000 |
Alarcon Rise, Meyibo | active, confirmed | mid-ocean ridge | Gulf of California | 23.3553 | -108.5443 | 2295 | 2012 ROV Doc Ricketts |
NESCA | active, confirmed | mid-ocean ridge | Gorda Ridge | 41.0000 | -127.4917 | 3300 | 1988 submersible Alvin; 1986 dredge and photographs did not confirm activity |
Northwest Eifuku | active, confirmed | arc volcano | Mariana Arc | 21.4850 | 144.0430 | 1604 | 2004 ROV ROPOS; 2003 plume only |
Sasquatch Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9969 | -129.0662 | 2200 | 2000 submersible Alvin |
Omuro Hole | active, confirmed | arc volcano | Izu-Bonin Arc | 34.5467 | 139.4417 | 200 | 2012 ROV Hyper-Dolphin |
EPR, 9 17'N | active, confirmed | mid-ocean ridge | N EPR | 9.2800 | -104.2166 | 2585 | 1989 Argo I towed video |
Esmeralda Bank | active, confirmed | arc volcano | Mariana Arc | 14.9667 | 145.2500 | 323 | 1990 towed video and TV-grab; 1978 hydrothermal deposits 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 |
Natsushima 84-1 Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 27.5750 | 127.1417 | 1600 | 1986 submersible Shinkai 2000 |
EPR, 10 44.6'N | active, confirmed | mid-ocean ridge | N EPR | 10.7433 | -103.6500 | 2580 | 1985 Argo video tow with temperature |
Central Cleft, off-axis | active, confirmed | mid-ocean ridge | JdF Ridge | 44.7583 | -130.2750 | 2200 | 2000 ROV Tiburon |
Sumisu Caldera | active, confirmed | arc volcano | Izu-Bonin Arc | 31.4667 | 140.0667 | 690 | 1998 submersible Shinkai 2000 |
Kaikata Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 26.7000 | 141.0833 | 930 | 1988 submersible Shinkai 2000; 1985 dredge only |
Salty Dawg Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9822 | -129.0756 | 2200 | 1995 submersible Alvin, followed by ROV ROPOS |
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 |
Alarcon Rise, Tzab-ek | active, confirmed | mid-ocean ridge | Gulf of California | 23.3526 | -108.5597 | 2249 | 2015 ROV Doc Ricketts |
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 |
Daikoku volcano | active, confirmed | arc volcano | Mariana Arc | 21.3240 | 144.1940 | 450 | 2004 ROV ROPOS; 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 |
EPR, 9 30'N | active, confirmed | mid-ocean ridge | N EPR | 9.5167 | -104.2414 | 2580 | 1989 Argo I towed video |
Northwest Rota-1 volcano | active, confirmed | arc volcano | Mariana Arc | 14.6010 | 144.7750 | 599 | 2004 ROV ROPOS; 2003 plume only |
Flow | active, confirmed | mid-ocean ridge | JdF Ridge | 46.5250 | -129.5783 | 2390 | 1993 ROV ROPOS |
W Syoyo | active, inferred | arc volcano | Mariana Arc | 22.5080 | 142.5330 | 2150 | 2003 plume only |
Mariana Trough, 14.5 N | active, inferred | back-arc spreading center | Mariana Trough | 14.4870 | 144.0940 | 4120 | 2015 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) |
Stockwork | active, inferred | mid-ocean ridge | JdF Ridge | 47.9000 | -129.1240 | 2300 | 2005 submersible Alvin (need publication to determine if confirmed) |
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 |
Makhahnas | active, inferred | arc volcano | Mariana Arc | 20.5300 | 144.8833 | 420 | 2003 no plume detected |
EPR, northern 17 N segment | active, inferred | mid-ocean ridge | N EPR | 17.6700 | -105.0050 | 2800 | 1997 plume only |
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) |
SW Syoyo | active, inferred | arc volcano | Mariana Arc | 22.3870 | 142.7620 | 1750 | 2003 plume only |
Galapagos Rift, 93.7 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.4970 | -93.7700 | 2220 | 2005 plume only |
Gorda Ridge, GR-15 | active, inferred | mid-ocean ridge | Gorda Ridge | 42.9500 | -126.5500 | 3365 | 1985 plume only |
Ahyi | active, inferred | arc volcano | Mariana Arc | 20.4200 | 145.0300 | 60 | 2003 plume only |
Okinawa Trough, Site ES1 | active, inferred | back-arc spreading center | Okinawa Trough | 30.3303 | 129.0827 | 521 | 1992 dredge only |
Mariana Trough, 16.5 N | active, inferred | back-arc spreading center | Mariana Trough | 16.4010 | 144.8700 | 3829 | 2015 plume only |
Bataan | active, inferred | arc volcano | Luzon/Bicol Arc | 20.0000 | 122.0000 | 2002 or earlier some indications of activity | |
SESCA | active, inferred | mid-ocean ridge | Gorda Ridge | 40.7500 | -127.5200 | 3300 | 1986 sediments and heat-flow measurements |
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) |
Wagner Basin | active, inferred | mid-ocean ridge | Gulf of California | 31.0666 | -114.0833 | 120 | 2007 echosounder and grab samples |
Mariana Trough, 18.2 N | active, inferred | back-arc spreading center | Mariana Trough | 18.1080 | 144.7380 | 3916 | 2015 plume only |
Eye of Mordor Seamount | active, inferred | mid-ocean ridge | Galapagos Rift | 1.9410 | -91.3100 | 1555 | 2005 plume only |
Leyte | active, inferred | arc volcano | Luzon/Bicol Arc | 11.5000 | 124.7000 | 2002 or earlier some indications of activity | |
EPR, southern 17 N segment | active, inferred | mid-ocean ridge | N EPR | 16.5800 | -105.3000 | 2700 | 1997 plume only |
Consag Basin | active, inferred | mid-ocean ridge | Gulf of California | 30.6333 | -113.9083 | 140 | 2007 echosounder and grab samples |
Myojinsho Caldera | active, inferred | arc volcano | Izu-Bonin Arc | 31.8833 | 139.9500 | 1110 | 1988 deposits only; 2005 plume only |
Naung | active, inferred | arc volcano | Sangihe Arc | 3.7791 | 125.3750 | 600 | 2001 dredge only, 2003 CTD only |
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 |
Sumisu Rift | active, inferred | back-arc spreading center | Izu-Bonin back-arc | 31.1000 | 139.8917 | 1600 | 1987 submersible Alvin inactive chimneys only |
Magic Mountain, 3-km south | active, inferred | mid-ocean ridge | Explorer Ridge | 49.7250 | -130.2667 | 1850 | 2002 AUV ABE 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 |
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 |
EPR, 8 53'N | active, inferred | mid-ocean ridge | N EPR | 8.9000 | -104.2000 | 2580 | 1991 plume only |
South Sarigan Seamount | active, inferred | arc volcano | Mariana Arc | 16.5800 | 145.7800 | 240 | 2013 ROV HyperDolphin (did not confirm activity) |
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/Tamayo intersection | active, inferred | mid-ocean ridge | N EPR | 22.9333 | -108.0667 | 3200 | 1979 submersible Alvin did not confirm activity |
NE Anatahan submarine volcano | active, inferred | arc volcano | Mariana Arc | 16.3750 | 145.7250 | 460 | 2003 multibeam and sidescan sonar only |
Galapagos Rift, 95.5 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.6700 | -95.4500 | 3200 | 1990 submersible Alvin did not confirm activity |
Fukujin volcano | active, inferred | arc volcano | Mariana Arc | 21.9300 | 143.4700 | 1100 | 1987 deposits only |
Okinawa Trough, Site ES2 | active, inferred | back-arc spreading center | Okinawa Trough | 28.8137 | 128.1028 | 779 | 1992 dredge only |
Nishinoshima Island | active, inferred | arc volcano | Izu-Bonin Arc | 27.2367 | 140.8783 | 5 | 1975 SCUBA |
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 |
Gorda Ridge, EP96B | active, inferred | mid-ocean ridge | Gorda Ridge | 42.5500 | -126.8333 | 3400 | 1984 deposits only; 1996 plume only |
Galapagos Rift, 94.4 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.5300 | -94.3300 | 2400 | 2005 plume only |
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 |
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 |
ET | active, inferred | mid-ocean ridge | JdF Ridge | 48.1993 | -128.9257 | 2500 | NotProvided |
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) |
Split Seamount | active, inferred | mid-ocean ridge | JdF Ridge | 47.6400 | -128.9667 | 2350 | 1990 camera tow (need reference to check if activity confirmed) |
Galapagos Rift, 94.7 W | active, inferred | mid-ocean ridge | Galapagos Rift | 2.6000 | -94.7750 | 2690 | 2005 plume only |
Tevnia | active, inferred | mid-ocean ridge | N EPR | 10.3333 | -103.5533 | 2925 | 1994 submersible Alvin did not confirm activity |
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 |
EPR, Manzanillo Spreading Segment | active, inferred | mid-ocean ridge | N EPR | 18.2500 | -106.3000 | 2600 | 1997 plume only |
EPR, southern 16 N segment | active, inferred | mid-ocean ridge | N EPR | 15.5000 | -105.4000 | 2300 | 1997 plume only |
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 |
Mariana Trough, plume 2 | active, inferred | back-arc spreading center | Mariana Trough | 12.7610 | 143.4730 | 2950 | 2003 plume only |
W Los Huellos Caldera | active, inferred | mid-ocean ridge | Galapagos Rift | 1.0000 | -90.6000 | 1600 | 2005 plume only |
San Felipe | active, inferred | other | Coastal Baja California | 31.0000 | -114.8000 | 1 | 1982 or earlier, likely from shore |
EPR, mid 17 N segment | active, inferred | mid-ocean ridge | N EPR | 17.0000 | -105.3800 | 2750 | 1997 plume only |
Philippine Ridge, West Philippine Basin | inactive | back-arc spreading center | West Philippine Basin | 12.0000 | 131.4170 | 5800 | NotProvided |
Brown Bear Seamount | inactive | mid-ocean ridge | JdF Ridge | 46.0333 | -130.5500 | 1500 | NotProvided |
DSDP Hole 504B | inactive | mid-ocean ridge | Galapagos Rift | 1.2267 | -83.7300 | 3500 | NotProvided |
Parece Vela Ridge, Philippine Sea | inactive | back-arc spreading center | Parece Vela Basin | 16.0000 | 139.1667 | 5000 | NotProvided |
Hawaiian Ridge | inactive | intra-plate volcano | Central Pacific | 15.0000 | -157.5000 | 5000 | 1987 or earlier |
Guaymas Basin, Northern Trough | inactive | mid-ocean ridge | Gulf of California | 27.3050 | -111.5067 | 2000 | 1977 submersible Seacliff (hydrothermal deposits only) |
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 |
Shinkurose Bank | inactive | arc volcano | Izu-Bonin Arc | 33.5667 | 140.1667 | 200 | 1992 or earlier submersible Shinkai 2000 |
E Eye of Mordor | inactive | mid-ocean ridge | Galapagos Rift | 1.9058 | -91.2310 | 1600 | 2005 towed video Medea found inactive chimneys |
W Eye of Mordor | inactive | mid-ocean ridge | Galapagos Rift | 1.9707 | -91.3900 | 1600 | 2005 towed video Medea observed inactive chimneys |
Gorda Ridge, 41 30'N | inactive | mid-ocean ridge | Gorda Ridge | 41.5167 | -127.4500 | 3350 | 1984 deposits only |
Dellwood Seamount | inactive | mid-ocean ridge | Explorer Ridge | 50.7470 | -130.8961 | 800 | 1974 or earlier deposits only; 2018 ROV Hercules inactive |
Green Seamount | inactive | mid-ocean ridge | N EPR | 20.8033 | -109.2833 | 2000 | 1982 submersible Alvin observed only inactive |
Hess Deep | inactive | mid-ocean ridge | Galapagos Rift | 2.2500 | -101.5000 | 5100 | NotProvided |
Galapagos Rift, 85 50'W | inactive | mid-ocean ridge | Galapagos Rift | 0.7500 | -85.8333 | 2600 | 1988 or earlier submersible observations |
Kasuga 1 Seamount | inactive | arc volcano | Mariana Arc | 21.7650 | 143.7100 | 600 | 2003 no plume detected |
Explorer Deep | inactive | mid-ocean ridge | Explorer Ridge | 50.1000 | -129.7500 | 3200 | 1969, deposits only |
EPR, 14 N seamount | inactive | mid-ocean ridge | N EPR | 14.1500 | -104.3667 | 2600 | NotProvided |
Nishi-Shichito Ridge | inactive | arc volcano | Izu-Bonin Arc | 31.3667 | 138.7500 | 1600 | NotProvided |
Kurose Hole | inactive | arc volcano | Izu-Bonin Arc | 33.4000 | 139.6800 | 760 | 1989 inactive; 2009 inactive |
Paramushir Island | inactive | arc volcano | Kuril Arc | 50.3300 | 155.5000 | 800 | NotProvided |
Galapagos Rift, 95 W | inactive | mid-ocean ridge | Galapagos Rift | 2.5000 | -95.1667 | 2600 | NotProvided |
EPR 87D1 Seamount | inactive | mid-ocean ridge | N EPR | 11.5333 | -103.8600 | 2090 | NotProvided |