May 31, 2010

We’re ready to start


It’s a beautiful night outside. The sea is calm, no wind. The sky is clearing up, to reveal a glimpse of the midnight sun. I just took a walk outside on the helicopter deck and the bridge wing. The picture above was taken at 1 am, which means astronomical midnight, when corrected for daylight saving time.

This has been a good day. All the seismic cables and the air-guns are deployed. We have tested the guns, and checked that we record data as expected. In the instrument room the geophysical crew is ready: the navigators, the gun controllers, the quality controllers, and the on-board data processors.

Right now we are steaming towards north, before we make a ninety degree turn into the first line. Then we have an hour run-in to straighten the hydrophone cables. It’s not easy to make these turns. The seismic cable spread we are towing behind the ship is 800m (half a mile) wide, 6km (about 4 miles) long, and covers an area almost one and half times the size of Central Park.

The first shot will be fired two hours from now. When I wake up tomorrow morning, we will have some interesting data to look at. Life is good >:)

5 comments:

  1. I can't wait to find out about the data...what are you trying to learn out there and how can it impact little ole me in Colorado?

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  2. Good question, Anita. We're doing petroleum exploration, such that you can still gas up your car in Colorado in the future >:)

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  3. I hope you'll explain the data in ways I can understand. It all sounds very fascinating and adventurous.

    Helen
    Straight From Hel

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  4. The data will be secret for a long time, Helen. But I will show you another example some time, to illustrate and explain the concept >:)

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