In the steps of the HMS Beagle
April 24, 2000
By Dr. Dan Fornari
Almost 165 years ago, the HMS Beagle sailed up the
channel between Isabela and Santa Cruz Islands carrying Charles
Darwin to several of the islands in the Galapagos Archipelago.
Today, we followed the same track as we left these beautiful islands
to head north on the last leg of our expedition. Sailing by the
young volcanic landscapes on these islands was like looking through
the pages of a textbook on volcanoes! There was plenty of wildlife
to watch too. Frigate birds, gulls, and boobies swooped and dived
for small bait fish that scattered from the bow of RV Melville.
Porpoises were herding tuna in the distance, but the ship was going
too fast (over 13 knots) for our trolling lines to attract any
fish.
We have been at sea for over a month -- a long time
to be away from home, loved-ones, and friends. One of the reasons
we stopped in the Galapagos Islands was to let off two members
of our science team who had to return to their universities for
other pressing research projects. Rachel Haymon and Paul Johnson
have been valued members of our expedition and we were sad to see
them leave in Santa Cruz. We wish them a safe and speedy return
home. For the rest of us, it is back to the open ocean after the
change of pace that the few days working in the Galapagos Islands
brought us.
Soon we will begin working
at the final mid-ocean ridge study site for this expedition --
the Galapagos Rift near 2° 08’N
Latitude and 97° 34’W Longitude. There, we will be looking
for evidence that a volcanic eruption occurred 18 months ago. Our
data from the Autonomous Hydrophone Array indicate that a seismic
event occurred then -- now we have to show that it was caused by
volcanic activity.
We got a great view of the northwest coast of Santa
Cruz Island as we sailed northwest up the Isabela Channel. Small
islets, like the one in this picture, are havens for marine life
and are some of the best SCUBA diving spots in the Galapagos Islands.
As I write this journal, RV Melville is steaming
northwest at 13.5 knots. If we maintain this speed, we will get
to our survey area in the early morning hours of Wednesday, 26
April. In the meantime, we are planning our strategy for the DSL-120
sonar and Argo II surveys that we will do in that area. Check in
tomorrow for more details on the next survey site and what we plan
to do.
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