Athropolis HOME   |   Maps   |   Arctic Links   |   Arctic Library
Click to go HOME
From our library of things you should know about the Arctic


Help! Help! Brrrr! HELP!

When walking on ice with water underneath, always observe minimum thicknesses for safety on clear, solid ice (see diagram below right). Even though ice can be very strong and hard, it is not always safe to walk on. Here's why:

  •  Ice hardly ever freezes or thaws at a uniform rate. It can be very thick in one spot while, only a few steps away, it can be dangerously thin. Use an auger to test the thickness.

  •  Snow is a good insulator, it slows down the ice forming process and keeps the ice from freezing hard. And, snow is heavy - it adds to the load on the ice.

  •  New ice is usually much stronger than old ice. Direct freezing of still water makes stronger ice than that formed by melting snow, refrozen ice, or ice made by water bubbling up through cracks and freezing on the surface. Clear blue/black ice is stronger than milky white ice.

  •  Ice near the shore is weakest. The shifting, expansion and buckling action of the lake or stream over the winter continually breaks and refreezes ice along the shoreline.

  •  River ice is usually weaker than ice on lakes. River mouths are dangerous because the currents undermine the ice.

  •  Protruding logs, brush, or docks can absorb heat from the sun and weakening the surrounding ice.

MORE...
Click pictures for more information and credits.
Library: Arctic, Ice, Snow, Cold Places
Links: Arctic, Cold Places
Arctic Maps & Weather Reports


Double-click any unlinked word DICTIONARY: Just "double-click" any unlinked word on this page for the definition from Merriam-Webster's Student Electronic Dictionary at Word Central.
Arctic Library ARCTIC LIBRARY & GLOSSARY: Check this section for an index of the rest of the things you really need to know about the Arctic.
All sorts of Arctic Maps ARCTIC MAPS & WEATHER REPORTS: Maps of the Northwest Passage, explorers' routes, iceberg sources, Nunavut, the Arctic by treeline, temperature...
Links to related sites. ARCTIC LINKS: Even more information! Links to sites related to the Arctic and "Iceberg: the Story of the Throps and the Squallhoots".
A Guide to Arctic Sunrise and Sunset GUIDE TO ARCTIC SUNRISE & SUNSET: How much sunlight or darkness is there in the Arctic on each day of the year?

Search for more on this topic...from Athropolis!
(1) Click the button for Web (below) to search the World Wide Web
(2) Click button for
WWW.ATHROPOLIS.COM to search this web site

 
Web WWW.ATHROPOLIS.COM
Icy Cold Jokes | Icy Games | E-mail | Athropolis HOME
Copyright 2005 Athropolis Productions Limited. The content of web sites that this site has links
to is the property of their respective owners, and Athropolis is not responsible for their content.