Ice-Out Update: March 6, 1998
Today's Report Includes:
Walden Pond Announces Early Ice-Out!
Official 1998 Ice-out Date
So ends our 1998 Internet Ice-Out contest for Walden Pond, a full month earlier than the deadline! If you live in the Eastern United States and you think it's been a warm year, now you have solid facts to prove it. We've included Thoreau's ice-out records from the 1800's in the chart below and added records for the 1900's, collected by Journey North students. This has been an unusually warm year!
Ice-Out Records for Walden Pond
Collected in the 1800's by Henrry David Thoreau
Introducing This Week's Official Ice-Out Observation Post
Our 3rd official ice-out post is Lake Minnetonka. This still-frozen lake is located right outside the window of the Journey North headquarters in Minnesota. People here have always been eager for spring, and for the past 111 years they've kept ice-out records for this lake. By law, all ice fishing houses must be removed by March 1st, because heavy trucks are needed for the task.
Ice-out dates are one of the best natural ways to measure the amount of heat the earth has received, and compare spring's pace from year to year. Look at the 111 years of ice-out data , and then see how you would answer these questions:
Ice-Out Data from Journey North Observers
How to Respond to Today's Challenge Question
1. Address an e-mail message to: firstname.lastname@example.org
2. In the Subject Line of your message write:
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