Archive for November 13th, 2009

2 Kilometers To Go

Friday, November 13th, 2009

As we discussed in the last blog, our time for crossing into Spanish waters would depend on the currents. If the currents turned to the east, we would make it across at tonights 7 pm surfacing.  If the currents turned to the south, we would have to wait for tomorrow morning.  Currents turned to the south, and remain strong at 15 cm/sec.  We were 6 kilometers from the line. We only flew 4 kilometers.  That leaves us 2 kilometers shy of the Spanish Exclusive Economic Zone (thin yellow arc). We have flown 7279 kilometers in 200 days.  We have one more 8-hour segment to go. What will 3 am bring us?

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200 Days at Sea. 6 Kilometers to go.

Friday, November 13th, 2009

At 11 am this morning local time, Scarlet surfaced and reported currents to the SE at 15 cm/sec.  So the current speed is still high, but they have rotated around counterclockwise, starting at South and switching to southeast.  If this rotation trend continues, it will align the currents more with the geostrophic currents, and it will push us closer to the Spanish EEZ.  Our glider heading was maintained at NE.

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Looking at the big clock, today is our 200th day at sea.  We have flown 7,275 kilometers. For flight distance remaining, we have measured it several times, and have discovered that precise distance measurement is not a strength of google earth.  Our best estimate is that we are just under 6 km from the edge of the Spanish Exculsive Economic Zone marked by the thin yellow arcs.  Our last segment covered a distance of 6.5 km.  We expect to be very close to Spanish waters at the 7 pm surfacing.  If the current rotates more towards the east, we cross.  If the current rotates more to the south, we'll be a few kilometers shy, and the crossing will occur at the 3 am surfacing. Either way, I bet we are watching.

12 kilometers and an unexpected current

Friday, November 13th, 2009

Just a short blog - wanted to get this over to Antonio in the Canaries right away. Looks like we all will be pouring over our guidance maps today.  Scarlet just reported a strong current 0f 13 cm/sec to the Southeast, almost exactly opposite to what we see in the geostrophic currents from the satellite altimeter.  Strong winds?  Inertial waves? Looks like Antonio and I will be generating a little email traffic in preparation for the 11 am surfacing.  This new current slowed progress to the east a bit.  We only covered about 4 kilometers, bringing us to within 12 kilometers of the Spanish EEZ as of 3 am (eastern standard time) today.

 

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