2004 Expedition 9North East Pacific Rise 2004 Expedition 9North East Pacific Rise 2004 Expedition 9North East Pacific Rise
2004 Expedition 9North East Pacific Rise
2004 Expedition 9North East Pacific Rise

 

Research at 9° North

About the R/V Atlantis
and DSV Alvin

The Research Team
The Expedition Log



 

 

This expedition is Voyage 11 Leg 9 for the Research Vessel (R/V) Atlantis (ATL11-9). The R/V Atlantis, with science party, ship's crew and Alvin group, departed from Puntarenas, Costa Rica on March 15, 2004.The first of 11 Alvin dives at 9°N began on March 20th.

You can track their path at where is Atlantis now?
During the Expedition, crew members will be sending periodic updates to this log. Check back frequently.

Monday, March 14, 2004
After eventful trips, turbulent flights, and little sleep most of the science party arrived in Costa Rica . . . More. . .

Monday, March 15, 2004
The original plan was to sail at 0800 today, but some of our equipment arrived in Costa Rica later than expected due to shipping problems.
More. . .

Tuesday, March 16, 2004
The seas have been extremely calm and everyone is feeling pretty well. More. . .

Wednesday, March 17, 2004
St. Patricks Day! Things are still rolling along nicely abourd the R/V Atlantis.
More. . .

Thursday, March 18, 2004
Today is another day we spend entirely "in transit," i.e. still driving out to study site.
More. . .

Friday, March 19, 2004
Today the tempo has undoubtedly picked-up in anticipation of the 1st Alvin dive tomorrow.
More. . .

Saturday, March 20, 2004
The first Alvin dive of this cruise is today. Everyone was up this morning to watch. . .
More. . .

Sunday, March 21, 2004
Today Jen Shosa went on her first Alvin dive. She dove with the intrepid Deep Sea Explorer . . .
More. . .

Monday, March 22, 2004
My day started at 1201am (I had yet to go to sleep from the previous day) . . .
More. . .

Tuesday, March 23, 2004
For the past 5 nights we've (myself and Stacy) been doing some nighttime coring. We've been traveling to various abyssal hills . . .
More. . .

Wednesday, March 24, 2004
Today started as most others. Up at nine to bubble nitrogen into samples to test them for nutrients . . .
More. . .

Thursday, March 25, 2004
Yesterday I was the lucky scientist to dive in Alvin. I emphasize scientist in the singular because yesterday's dive was a PIT (Pilot-In-Training) dive. . .
More. . .

Saturday, March 27, 2004
This is it! I can feel it This is the day! I have been thinking of this moment for more than one year now . . . More. . .

Sunday, March 28, 2004
It was noon and my day started. The day was different from the days previously described . . . More. . .

Monday, March 29, 2004
Today was an eventful day on the ship.The last Alvin dive launched this morning. We had our last . . . More. . .

Tuesday, March 30, 2004
Today was an eventful day on the ship.The last Alvin dive launched this morning. We had our last . . . More. . .

Wednesday, March 31, 2004
By about 2am the seas and winds have calmed down, we are out of the squalls, and Atlantis continues its trek almost due north . . . More. . .

Thursday, April 1, 2004
The seas are flat calm today - its truly gorgeous weather at sea! Sunny, warm, and calm. If it seems like we are slightly obsessed with the weather . . . More. . .

 

Deep Facts . . .
The 9°N site is spreading at a full opening rate of 11 cm/yr (4.4 inches/yr)
The depth of the ridge crest at 9°N is 2500-2600m (8250-8590 feet).
The temperature of the seawater at 9°N, when not influenced by hydrothermal venting, is 2°C, and contains substantial amounts of oxygen.
The global ridge system is about 60,000km (40,000mi.) long and covers 23% of the Earth's surface.
Approximately 500 new species have been identified at seafloor hydrothermal systems since their discovery in 1977.