Aug
17
Filed Under (Uncategorized) by holserr on 17-08-2009

A few of us brave sailors have once again embarked on a sea-born adventure. Due to space and time restrictions on the primary SUCCES cruise, a number of experiments are taking place piggy-backed on to a cruise for the Reimers lab. Al Devol brought his lander out to allow us to look at changes at chemical changes in the water-sediment interface over the course of around 15 hours. The lander is affectionately known as Ole Yeller
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The lander is programmed to drop it’s ballast at a specified time in the morning, causing it to rise to the surface. Additionally, surface buoys, flags, lights, and transmitters ensure that we don’t lose track of the gear, even if it does not surface on its own.
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The other members of the SUCCES crew (myself included) are managing a number of incubation experiments intended to watch chemical changes in both surface and bottom boundary layer water over the course of a week. Every day we stop a portion of the incubation for analysis. There are several different iron incubations, a TCO2 incubation, and two POC incubations.

Meanwhile, the Reimers lab has been attempting to collect sediment cores the last two nights, but unfortunately haven’t had much success yet. We’ve cracked one tube, lost another on the bottom, and pulled up a lot of water.

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The weather has been slightly less cooperative the last two days (25+ knot winds, 6ft wind waves and 7ft swells) which may be contributing to their difficulty.