NeMO July 23, 2001

Logbook: July 23, 2001

Brown: Dives at Cloud...on to CASM
Wecoma: (no report today)
Teacher logbooks: Imagenex mapping; filling spare time
Perspective today: Susan Kulp, Geologist

Science News | Teacher At Sea | Participant Perspective

Cruise Calendar

July-August 2001

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Science News

NOAA Ship Ron Brown - ROV Cruise

Galatheid crab, also known as a "squat lobster".

ROPOS dive 625 was focused on putting down and recovering a number of different experiments at the Marker 33/Cloud vent site on the 1998 lava flow, including the interactive fluid sampler for its short-term deployment at Cloud vent. The next ROPOS dive (#626) will be our first visit to the CASM vent field since 1999. CASM is located at the northern edge of Axial caldera and was the first hydrothermal vent discovered on the Juan de Fuca Ridge, back in 1983. More...

R/V Wecoma - CTD Cruise

A naturally colored shrimp who hitchhiked on board the CTD for a ride to
the top.

Teacher Logbooks

NOAA Ship Ron Brown - Jeff Goodrich

Pee Yew! What smells? Sulfide. It must be those tubeworm samples again. After ROPOS came up on deck around 1200 the scientists rushed out to the bio box and suction sampler to collect their latest treats from the deep. Dive number R625 brought us back to the Cloud vent area for Sabastian Durand's video/mapping survey with a side scanning sonar called Imagenex.
More...

R/V Wecoma - Missy Holzer

What do you do to consume your spare time? On land there are plenty options that most of us take advantage of, but when you're out sea you're options are obviously limited. The work period on a ship is called on a watch, and it could last from 8 to 12 hours or in can be broken into 4 hour periods that can total up to 8 or 12 hours a day. The time in between the watches is time that can be used at the crewmember's discretion. More...

Participant Perspective

Interview with Susan Kulp
Geologist - University of Florida

Jeff: What project are you working on along the Juan de Fuca Ridge?

Susan: My project deals with a location south of Axial Volcano on the south Cleft segment of the Juan de Fuca Ridge. I'm looking at the intersection of the southern Cleft segment of Juan de Fuca Ridge with the Blanco Fracture Zone, a big transform fault. I'm studying the "cold edge effect." It's a geochemical phenomenon that occurs due to the interaction of the hydrothermally active ridge with the hydrothermally inactive transform fault. The Blanco Fracture Zone basically cools down and truncates the magma chamber underneath the ridge. This causes melting to occur more quickly, and the magma doesn't have as much time to crystallize. More...