PatrickSheldon_Summer2015

Patrick Sheldon, Research report from one summer day on Boston Harbor

8/20/2015

Patrick_buoy_lab
Research buoy in the lab, ready for deployment

 

Weather: Early morning clouds, mostly burned off by 10 a.m. Partly cloudy (70% clear skies). Savin Hill Cove in cloud cover, anchorage and jfk clear skies. Winds 8-10 mph with 1-3 ft waves. Low- tide at 9:38 a.m. Had trouble collected upward/ downward radiance on the way back in due to cloud cover. Sampling at Buoy A (11:00- 11:30) had best visibility. All time reported in EDT

Checking signals oxygen 1: CDOM, oxygen 2: Chl, oxygen 3: OBS. CTD laptop 15 minutes fast.

9:50 a.m. All on- board instruments working (CTD and upward/ downward radiance) Bob, Francesco, Zhehai, Patrick depart from dock.

10:09 a.m. started transect from Venetian Restaurant traveling at 5 knots. CTD towed 3 ft off Port side, end of purple tape at the surface. Continuous measurements of Chl, CDOM, OBS, salinity, temperature recorded and saved under “BH Transect 1”.

Patrick_buoy_muddy
Buoy deployed

11:00 a.m. completed transect and arrived at Buoy A (anchorage). See “15.08.20 BH Report.xls” for data summary. Waiting for overpass at 11:30, preformed maintenance on Buoy A (Airmar and CDOM sensors).

11:30 a.m. Collected discrete samples 1-3, tested upward/downward radiance, and preformed vertical cast with CTD (Saved as “BH harbor surface.) from Buoy A.

11:40 a.m. Collected discrete samples 4-6, tested upward/downward radiance, and preformed vertical cast with CTD (saved as BH remote cast 2) from Navigational Buoy 2.

11:51 a.m. Collected discrete samples 7-9, tested upward/downward radiance, and preformed vertical cast with CTD (saved as BH remote cast B) from Buoy B. Pulled CTD out of water before instrument stop on this vertical cast.

12:05 p.m. Collected discrete samples 10-12, tested upward/downward radiance, and preformed vertical cast with CTD (saved as BH remote cast 4) from Navigational Buoy 4.

12:23 p.m. Collected discrete samples 13-15, tested upward/downward radiance, and preformed vertical cast with CTD (saved as BH remote cast C) from Buoy C.

Patrick_bhremote_17jun15
Buoy measurements

Final note: Successful day with no surprises. Established all transect files will be saved as “<date> BH Remote”. Also, all buoys will be labeled as follows:

Station 1 or Buoy at gas tank – Buoy A

Station 2 (42°18′.453, 71°02′.028W) – Navigational Buoy 4

Station 3 – Buoy B

Station 4 (42°19′.574N, 71°00′.177W) – Navigational Buoy 2

Station 5 or anchorage- Buoy A

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