MidOcean Ridge Hydrothermal Vents

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Mid-Ocean Ridge Hydrothermal Vents
Extreme Environments for Seafloor Instrumentation
Dr. Dan Fornari Woods Hole Oceanographic
Institution Dept. of Geology and Geophysics
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Hydrothermal Vents Discovered in 1977 - Galapagos
Rift
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Past two decades have quantified first-order
processes
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In situ monitoring and time-series studies needed
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Global Range of Known MOR Vents
From InterRIDGE web site http//triton.ori.u-tok
yo.ac.jp/intridge/data1.html
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Depth Range of MOR Venting
Mid-Atlantic Ridge Menez Gwen, 850m Lucky
Strike, 1710m Broken Spur, 3300m Rainbow,
2250m TAG Snakepit, 3480m Lost City, 800m
Logatchev, 3010m
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Depth Range of MOR Venting
NE Pacific Gorda, 3270m Middle Valley,
2400m Endeavor, 2200m Axial Seamount, 1550m
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Depth Range of MOR Venting
East Pacific Rise 21N, 2700m 13N,
2600m 9-10N, 2500m 1N, 2850m 17-21S,
2700m 32S, 2900m Galapagos Rift, 2600m Guaymas
Basin, 2000m
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Depth Range of MOR Venting
Central Indian Ridge Kairei, 2400m Edmond,
3300m
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Depth Range of MOR Venting
Western Pacific Mariana Back Arc,
3660m Okinawa Trough, 1360m Manus Basin,
2500m Woodlark Basin, 2250m N. Fiji Basin, 2500m
Lau Valu Fa, 1700-2100m
Seamounts Loihi, 980m
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Types of MOR Vent Environments
Axial collapse Troughs in Young Volcanic
Terrain Axial Ridges in Rift Valleys Rift
Valley Walls Fault Scarps Ridge/Transform
Intersection - Megamullions
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Seafloor Eruptions and Time-Series
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Types of Hydrothermal Vent Structures
Chimneys Mounds Fissures
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Relationships of Vent Structures toBiological
Communities
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Relationships of Vent Structures toBiological
Communities
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Relationships of Vent Structures toBiological
Communities
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Relationships of Vent Structures toBiological
Communities
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In-Situ SensorsTheir Development and
Application for theStudy of Chemical, Physical
and BiologicalSystems at Mid-Ocean
RidgesNSF/RIDGE-Sponsored Workshop

• October 22-24, 2000
• Aptos Moss Landing, California

Converners W.W. Seyfried, Jr., U. Minnesota
K.S. Johnson, MBARI
M.K. Tivey, WHOI
http//ridge.oce.orst.edu/meetings/ISSworkshop/ISS
_Report.pdf
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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Seafloor and Vehicle Instrumentation
Considerations
Seafloor Roughness Fissures Vents Collapse
Pits Vent Structures Power Fouling Sensor
Materials Data Update Rates Correlative
Data Payload/Manipulation Form
Factor Cabling/Connectors Electrical
Grounds Navigation
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National Science Foundation web
site http//www.nsf.gov RIDGE Program web
site http//ridge.oce.orst.edu InterRIDGE web
site http//triton.ori.u-tokyo.ac.jp/intridge/dat
a1.html WHOI National Deep Submergence Facility
http//www.marine.whoi.edu/ships/ships_vehicles.h
tm Dive and Discover web site http//www.divedis
cover.whoi.edu RIDGE Program In-Situ Sensors
Workshop Report http//ridge.oce.orst.edu/meetings
/ISSworkshop/ISS_Report.pdf
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