Monthly Archives: July 2010

More from the Cope-people

Posted on July 15, 2010 by abplankton

We wrapped up a successful week of sampling with our final net tows and niskin bottle collections yesterday.  With the help of the amazing crew and fellow scientists on board, we got into a good swing of things collecting samples from low oxygen … Continue reading →

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14 July 2010…The sweet smell of sulfide

Posted on July 15, 2010 by bcrump

We arrived at Station 858 this morning – a classic station on the east side of the channel just south of the Chesapeake Bay bridge.  Generations of scientists have occupied this beautiful site for sampling surveys and experiments.  You can … Continue reading →

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13 July 2010…Newly sulfidic water

Posted on July 14, 2010 by bcrump

As water moves north in the bottom layer of the Chesapeake Bay it runs out of oxygen and then accumulates hydrogen sulfide from bacteria using sulfate respiration in the sediments and the water column.  Yesterday we found the sweet spot … Continue reading →

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12 July 2010…Sub-oxia

Posted on July 13, 2010 by bcrump

Today we searched for “Sub-oxic” bottom water.  This is bottom water that has no detectable oxygen (and so is officially “anoxic”) but also has no detectable hydrogen sulfide.  We expect to find bacteria using a range of different respiratory metabolisms … Continue reading →

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11 July 2010…Sulfide!!!

Posted on July 13, 2010 by bcrump

We began the day with a CTD cast at our main sampling station, which we are calling LIDZ-1.  We fired a niskin bottle just to check and found that the bottom water smelled strongly of hydrogen sulfide.  So we missed … Continue reading →

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From the cope-people. Copepods on LIDZ.

Posted on July 13, 2010 by afishe21

The gathering of the delightful little creatures we know as copepods began on Saturday. At dawn, morale was high as we collected some samples with net tows and CTD bottles, continuing at noon, dusk, and midnight. On the DeZoZoo cruise, … Continue reading →

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10 July 2010…Samples!

Posted on July 12, 2010 by bcrump

Daniel Lee and I got up at 0430 to look at the scanfish data.  Daniel processed the data with Seabird software, and plotted oxygen concentration and salinity using Surfer software.  Yesterday we scanfish-ed through the “hydraulic control point” south of … Continue reading →

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9 July 2010…Scanfish day

Posted on July 11, 2010 by bcrump

We arrived on site just north of the Chesapeake Bay Bridge near where the main channel gets shallower to the north.  We deployed the Scanfish at 0800 and began towing to the south.  The Scanfish is a big yellow wing-like … Continue reading →

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8 July 2010…LIDZ cruise Loading Day

Posted on July 11, 2010 by bcrump

After three day cruises to our main sampling site in the middle of Chesapeake Bay this summer, we are finally ready for a week long cruise to survey the Dead Zone from the Chesapeake Bay Bridge to the mouth of … Continue reading →

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To sea once more…

Posted on July 7, 2010 by planktoneer

Well the LiDZ group is heading out tomorrow evening.  They are going to be looking at some different aspects of the Chesapeake Bay dead zone than we are in the DeZoZoo project.  From my perspective as a zooplankton ecologist, they … Continue reading →

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