Journey North News



Loggerhead Sea Turtle Migration Update:
April 17, 1996

Hello Loggerhead Friends--

Another week has gone by and it looks like turtle transmitter #11462 is still attached to the loggerhead. Hurray again!! Dr. Standora has sent us the latest data from our travelling turtle. Do you notice any interesting changes in the turtle's movements since last week?

Turtle Transmitter Contest Continues

Before we say our final goodbyes to the wayward transmitters, there's still time to place in the turtle transmitter contest. When and where do you think Transmitter # 09037 will eventually come ashore? (See the announcement at the end of this report.)

Are you ready to dive into a new loggerhead topic?

Underwater diving is what loggerheads do best! As Dr. Standora said in last week's report, the turtles dive underwater to feed on "benthic" (bottom living) organisms. Since diving is the main way that loggerheads search for their food, you can be sure that they have to be pretty good at it!

For this week's Challenge Question, do some research and find out just how good they are at diving. Try to find out how deep a loggerhead turtle can dive, and also try to find out how scientists know this.

Challenge Question # 86:

"How deep do you think loggerheads can dive? How do you think scientists find out how deep the loggerheads dive? (Please read the instructions below on how to respond to this Challenge Question.)

New Loggerhead Data:

Turtle #11462

Mar. 30: 36.590N, 44.640W
Mar. 30: 36.501N, 45.103W
Mar. 31: 36.148N, 46.011W

The Journey North Turtle Transmitter Contest

While you may only have intended to learn just about turtles, you now know more about the Gulf Stream than most people on earth! Last week, in Challenge Question # 77 we announced this contest:

Using all the data you've received this spring for transmitter # 09037 since it broke loose (see data below), "How fast does the Gulf Stream appear to travel?" and "Where and when do you think the transmitter # 09037 will reach shore?".

(Please provide an exact date and location. Follow the instructions at the base of this update on how to respond to this Contest Challenge Question # 77)

Data Points for Transmitter #09037
(After it broke away on Feb 6)

Feb. 06: 35.780N, 73.546W
Feb. 10: 37.427N, 68.767W
Feb. 11: 37.254N, 68.460W
Feb. 12: 37.071N, 68.343W
Feb. 13: 36.819N, 68.107W
Feb. 13: 36.768N, 67.998W
Feb. 17: 37.021N, 67.627W
Feb. 18: 36.962N, 67.483W
Feb. 19: 36.956N, 67.530W
Feb. 20: 36.968N, 67.665W
Feb. 23: 37.271N, 68.813W
Feb. 24: 37.277N, 68.241W
Feb. 25: 36.991N, 67.737W
Mar. 01: 36.575N, 68.281W
Mar. 02: 36.735N, 68.508W
Mar. 03: 37.087N, 68.777W
Mar. 04: 37.111N, 68.624W
Mar. 08: 37.522N, 67.425W
Mar. 09: 37.533N, 66.829W
Mar. 10: 37.607N, 66.220W
Mar. 11: 37.811N, 65.528W
Mar. 15: 37.617N, 63.932W
Mar. 16: 37.757N, 63.705W
Mar. 17: 37.459N, 63.530W
Mar. 18: 37.141N, 63.325W
Mar. 22: 36.845N, 61.122W
Mar. 24: 37.118N, 60.608W

How to Respond to Challenge Question # 77 or # 86:

1. Address an e-mail message to: jn-challenge@learner.org

2. In the Subject Line of the message write: Challenge Question # 77 or 86.

3. In the body of the message, give your school's name and location and answer one of these questions:

Contest Challenge Question # 77

"How fast does the Gulf Stream appear to travel?" and "Where and when do you think the transmitter # 09037 will reach shore?".

or

Challenge Question # 86:

"How deep do you think loggerheads can dive? How do you think scientists find out how deep the loggerheads dive?

The Next Loggerhead Sea Turtle Migration Update Will be Posted on April 24, 1996



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