Grounding Plate

At left is a picture of the grounding plate during cleaning, week of April 10, 2006. Photo by Jules Craynock.

Shallow CTD

At left is a picture of the shallow (i.e., near-surface, ~1m) CTD during cleaning, week of April 10, 2006. Photo by Jules Craynock.

Deep CTD

At left is a picture of the deep (i.e., near-bottom) CTD during cleaning, week of April 10, 2006. Photo by Jules Craynock.

LPPR1 ICON/CREWS Field Log: Puerto Rico CREWS Site

LPPR1 ICON/CREWS Field Log: Puerto Rico CREWS Site
J. Craynock & H. Casanova - 2 dives April 11,2006
- Adjusted tension on leg 3, reduced lean.
- Some concrete erosion noted on NW side of base, additional
concrete added and NE and SE sides cconcrete completed.
-Noticeable barnacle and hardshell growth on underside of all
spectra legs observed, some removed but should be cleaned
so that braid can be visible. Lashings need cleaning also.
Much thanks to Winston Rovira for his help driving the boat
and preparing concrete!

April 12, 2006
- Reduced tension on leg 2, pylon now straight.
Lashings retied. 2 SE side base lashings snug, might
have to be loosened next visit.

April 15, 2006
- H. Casanova removed both capillary tubes from the
CT's. Sent to manufacturer on Monday, April 17.
H. was snorkeling.

Maintenance Update

The LPPR1 CREWS station was cleaned and validated on March 8-2006 without problems between 9:45 am and 2:00 pm. Also, Basic cleaning was completed (but not blog until now) on Febraury 22-2006. The screens for the CTD protection are scheduled to be change on March 15-2006 (and photos will probably be taken), while the next Basic cleaning is schedule for March 22-2006.

CT Groundtruth Data from February 13th

Data has been received from the "groundtruth" CT that is connected to the station during maintenance trips. As a reminder, the idea is that the CT should be connected to the station for a full hour before cleaning begins, followed by one hour of cleaning, followed by one more hour after cleaning ends. Each "hour" begins and ends at six minutes before the clock hour (i.e., at 9:54am, 10:54am, etc.).

The CT was connected to LPPR1 at about 10:30am on Monday, February 13th (local time). It was removed at about 2:30pm that afternoon. It may be surmised that the "before" hour ran from 10:54am to 11:54am, the "during" hour from 11:54am to 12:54pm, and the "after" hour from 12:54pm to 1:54pm. Data for these three hours is as follows:

   Shallow CTD          Deep CTD        Groundtruth CT
-----------------  -----------------  -----------------
 Cond  SeaT   Sal   Cond  SeaT   Sal   Cond  SeaT   Sal
55.44 26.49 35.59  55.23 26.31 35.57  55.27 26.50 35.46
55.64 26.62 35.63  55.42 26.40 35.64  55.56 26.63 35.57
55.69 26.65 35.64  55.48 26.42 35.67  55.65 26.68 35.59

Validation and Complete Station Cleaning
The first validation run, couple with a complete cleaning of the sensors and structure was realized yesterday (Tuesday Febraury 13, 2006). The process started at 10:45 am (GMT-4) and completed by 2:20 pm. No problems were found. Three (3) adults Manatees were observed swiming in the surrounding area.