White billowing eruptive plume full of sulfur and ash coming out of Brimstone vent (no audio). |
Clear bubbles rising from the eruptive vent are mainly CO2, while the white cloud is dominated by sulfur from SO2 (no audio). |
Various types of filamentous microbial mat wave in the current on a vertical cliff near the summit of NW Rota-1. (no audio) |
A rocky outcrop on a ridge of the volcano provides habitat for two species of shrimp adapted to live at hydrothermal vents. (no audio) |
The smaller shrimp species is a grazer while the larger one is a carnivore. The smaller grazers get out of the way as a larger carnivore walks through a crowd. The carnivore species uses its large claws in aggressive displays. (no audio) |
A funnel attached to a “gas-tight” sampler is used to collect gas bubbles rising from the eruptive vent. (no audio) |
This time-lapse movie shows lava rising and pushing previously erupted blocks to the side in the vent over a time period of an hour and a half. The areas of the most intense degassing are where new lava is actively erupting (no audio. |
Watch closely as recently erupted (and already degassed) lava on the right side of the vent is shoved aside as new lava rises behind it and vigorously degasses. |
Time-lapse movie of the seafloor shaking and rocks being shoved away from the eruptive vent just before Jason moved out of the way (speeded up 4 times, no audio). |
The same video clip as above at normal speed (with audio). |
Jason’s manipulator arm holds a long intake tube designed to sample the hot fluids and gases coming out of the Brimstone eruptive vent. However, boiling seawater and molten sulfur make the sampling difficult. |
Molten sulfur sticks to the intake tube and has clogged the fluid sampler on this dive. Fluid samples from the eruption plume were successfully collected on later dives. |
Jason approaches the Brimstone eruptive vent at the top of the new 40-meter high cone (no audio). |
Jason prepares to sample the eruption plume as ash rains down on the vehicle. Later a curtain of CO2 bubbles rises in front of the camera during another eruptive pulse. |
The seafloor shakes and heaves as new lava forces its way to the surface. |
Ash explosively erupts from Brimstone vent as Jason prepares to place a temperature probe in the plumea temperature of 210° C (410°F) was where measured. |
All video copyright by Advanced Imaging and Visualization Lab WHOI
