herfortl's blog

Cast 37
Cast 37 Location

Cast 48

6:30 am leave the Maritime Museum Dock in Astoria to reach our North Channel station west of the bridge. Suzanna Brauer has joined us again for the day to collect samples to study manganese oxidizers. Again we took CTD cast every 30 min for the whole tidal cycle and did not see a true ETM event yet only a small increases in OBS values in the morning (which we sampled). However, we saw some very interesting changes in fluorometer data and in the late afternoon we saw a clear red tide. The water looked very red and Ray the captain, said that he never seen it so intense. We sampled in and out of the red tide.

6:00 am leave the Maritime Museum Dock in Astoria. Suzanna Brauer has joined us for the day to collect samples to study manganese oxidizers. Michael Wilkin is also joining us for the morning to hook up the ADP interface (Michael left the Barnes on the Forerunner). Coordination with the Forerunner which is doing a trans-south channel transect at the location of the Barnes, and North Channel and South Channel transects. We took CTD cast every 30 min for the whole tidal cycle. We saw some small increase in OBS values, once in mid-water column depth and once at the bottom and sampled each time. The water fractionation technique to separate the free-living bacteria from the whole sample is working fine.

Left Rainier Dock on Columbia River early in the morning to sample 3 times in the Columbia River at Beaver Army Dock (station 6, casts 9, 10 and 11). Sediment sampling with Shipeck grab sampler. We then returned to the MERTS campus to install the new side-mount ADP. In the evening we sailed to the Maritime museum dock in Astoria to be closer to our sampling site the next morning in the South channel.

Leave Port of Vancouver Dock on Columbia River to collect water samples in the Columbia River before the Confluent with the Willamette River (station 2, cast 5), the Willamette River before the Confluent with the Columbia River (station 3, cast 6), after the Confluent of Columbia and Willamette River. (station 4, cast 7) and in the Columbia River at Columbia City (station 5, cast 8). A grab sediment sample (very sandy) was also collected at station 5. Finished sampling and arrived in Rainier Dock in the afternoon, just in time before it started raining (Mike got rather wet finishing the Bacterial Production incubations on the deck!).

First sample collected in the estuary of the Columbia River, off Tongue Point (Surface water = 0 PSU, Bottom water = 2 PSU; Station 1 cast 4) and we are sailing right away towards Portland. Arrived in Port of Vancouver around 9:30 pm.

Friday 17 August 2007
7:30 am the Barnes left the MERTS campus dock to test sampling with Michael Wilkin (CMOP chief technician) in the South Channel. Because the air pump needed trouble shooting, we anchored in the side of the South Channel. We returned to MERTS dock for Michael to adjust the air pump. Lab is set up and ready to sample and all CTD sensors work well. Data is flowing back to the server after some configuration changes. We have agreed that all CTD casts (even ‘mistake’ ones) will be sequentially numbered. Everybody is eager to get the first sample! Byron Crump (chief scientist on Wecoma) and Lydie Herfort (chief scientist on the Barnes) had a phone conversation around 11:00 am.

R/V Barnes - CMOP cruise 14-31 August 2007

Ray McQuin (Captain)
Dave (first mate)
Jim Jim Postel (marine technician, UW)
2. Lydie Herfort (chief scientist, OHSU)
3. Mike Malpezzi (UMCES)
4. Tiffany Gregg (OSU)
5. Bill Howe (OHSU)
6. Sherry Pike-Saville (UMCES)

Thursday 16 August 2007
Loading day at MERTS campus dock in Astoria. ADCP be cannot be fixed today but will be ready for 19 August. Lydie Herfort had a meeting with Curtis Roegner (chief scientist on Forerunner) to finalise our plans for later this week. Cassandra Profita from the Daily Astorian came to interview Lydie Herfort, Bill Howe and Tiffany Gregg. CTD has been tested in the air and seems to be working fine apart from the OBS sensor but that may be because the CTD was not in the water. This will be tested tomorrow morning.