Archive for April 18th, 2008

Last Leg

Friday, April 18th, 2008

RU15 hit the HL5 waypoint this morning and is now turned and heading towards Halifax inbound on the Halifax line. Currents are low, we are running about 10 cm/sec or less. About 140 km to HL2, so about a week.
Batteries still looking good, as far as you can tell. Time to settle into a scientific sampling section to go with the shipboard data currently being collected.

Here's once example of the 3-D view of the full dataset so far. We'll be presenting this to K-12 teachers at tomorrow at Liberty Science Center. They have an activity to build their own gliders out of legos and stuff. NJNetwork is going to film our undergraduates with the gliders on wednesday next week. They asked for copies of any video or stills taken from the deployment or recovery. Finally our students will be presenting their work on this flight to the public on the Ag School's Field Day next saturday, which is near the time we can start thinking about recovery. NOAA asked for a quick 100 word write up for their newsletter. We have some great I-COOL stories to share. Thanks again to our Canadian partners.

4.74 km to the Halifax Line

Friday, April 18th, 2008

RU15 just surfaced 4.74 km away from HL5, the outermost shelf point on the Halifax line. We should be there sometime later this morning. At that point we'll make the turn in. Mostly clouds in the imagery this morning,
so we'll see how that develops. Currents have remained low, so its not as critical as it was in the Gulf Stream region.
Here is the nearly final section that started when we left the Warm Core Ring, crossed the slopewater and shelfbreak, and made our way east to the Halifax line. Almost there.

Temperature along the section. nearly the full water column on the shelf is cold, something our battery guru's will be watching. At the right end of the section, you can see the black shading for the bottom trace, indicating that the altimeter has now been turned back on (thanks Scott M!)

Once we hit HL5 and make the turn, we'll start a new section on the webpage and configure things for a standard cross-shelf line. There is a shipboard cruise going on right now, so we hope to contrinbute some scientific data to that project on the way in. A new area for us, but we benefit from a lot of local knowledge up in Halifax. Thanks again to all up there for sending their help to bring this thing in.