This animation shows how the Deep Submergence Vehicle Alvin is used to inspect seafloor features. Using lights, cameras, and the personal observation of divers aboard the submersible, the seafloor environment can be described. In this case, the vehicle is being used to inspect a lava pillar, a common geologic structure that is the consequence of underwater volcanic activity.
Species (common):
Year: 2004
Details:
Media Type: Animation
Data Type: Visualization
Device Type:
Feature:
Investigator: Daniel Fornari
Expedition:
Chief Scientist:
Species:

Alvin 35 mm photograph of the Bio9 vent area. Photograph showing the high-temperature Bio9 vent as it existed in 1993 with temperature loggers inserted into the active orifice [Fornari et al., 1998b, 2004; Shank et al., 1998, 2001; Scheirer et al., 2006]. Scale across image is ~3 m.
Species (common):
Year: 1993
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera
Feature: EPR:9N:Bio9
Investigator: Vicki Ferrini
Expedition:
Chief Scientist:
Species:

A view of the primary eruptive fissure within the Axial Summit Trough (AST) of the East Pacific Rise (EPR). The eruptive fissure is the locus of many volcanic eruptions, and is the conduit through which lava returns to the subsurface at the conclusion of an eruptive event creating the fractured pieces of lava shown here.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

The hydrothermal vent complex Bio9' (pronounced "Bio-9-prime") has several spires, only some of which are emitting hot hydrothermal fluids.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:Bio9'
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

A hydrothermal vent structure, named Bio9'' (pronounced, "Bio-9-double prime"), located in the Axial Summit Trough (AST) of the East Pacific Rise (EPR). The device inserted into the black smoker (383 degrees Celcius) is a temperature data logger (HOBO) that used to record vent fluid temperatures over a period of time, up to several years.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:Bio9''
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

A hydrothermal vent structure, with black smoke emanating as part of a focused plume of hot hydrothermal fluid. An instrument has been placed at the base of the venting source to monitor characteristics of the hot fluid. The cylinders in the lower left portion of this image are titanium bottles (Major Samplers) that are used to bring samples of hydrothermal fluids to the surface for laboratory analyses. The platform to which the fluid samplers are attached is the sample basket on the Deep Submergence Vehicle (DSV) Alvin.

An animal community with tube worms (Riftia pachyptila) thriving on the seafloor with the Axial Summit Trough (AST) of the East Pacific Rise (EPR). Shimmering water shown in this image is the result of warm water escaping from the seafloor. In the foreground of this image is the base of an instrument that is used to monitor water characteristics.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:Tica
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley

Seismogenic zone locking in Central America: Comparison of GPS-determined locking on the plate interface, well-located plate interface earthquakes (circles) recorded during our seismic network deployment, and rupture areas of past large earthquakes. Squares and dashed lines show original epicenter and rupture area, respectively, stars and solid lines show relocations, relative to better located 1990 event (black star). Offshore locked patch is up-dip of seismicity, and is less than rupture area of past large events.

MARGINS Red Sea Ancillary Site activity map showing instrument and profile line locations. Sources: GPS derived station velocities and existing and planned GPS station locations – Modified from Reilinger et. al., 2006. Saudi Arabia seismic stations and structural features - Preliminary report on tomographic imaging of the Arabian Peninsula by Park, Nyblade, Rodgers and Al-Amri, 2005. Also see Reilinger et al articles in MARGINS newsletters (#17 pages 8-9, 16-17).
Species (common):
Year: 2008
Details:

MARGINS Central America Focus Site activity map showing instrument and profile line locations. Sources: ODP sites - Morris et al., MARGINS Newsletter 10, Spring 2003. Fluid flow meters - Deshon et al. 2003, Brown,The Seismogenic Zone Revisited, Snowbird, Utah 6-21 March, 2003, and Tryon, pers. com. 2005. SEIZE seismic stations and OBSs-Syracuse et al., 2008,& and DeShon et al., 2003.TUCAN seismic stations- TUCAN website. Heat flow - Fisher et al., 2003 and Hutnak et al., 2006, GJI including MARGINS and non-MARGINS data.