11

Because swimming takes energy that your body could be using for heat and instead uses it for movement. The more energy you use in cold water, the more your body cools off. If you cannot climb out of the water, conserve body heat by remaining as still as possible and reducing the amount of your body exposed to the water. Protect your critical heat loss ...


6

From how it sounds, the river is too deep to walk through. I strongly advise against trying to swim through it in winter - if you are not well trained, well equipped and know the river very well, this is very likely deadly. Also, I advise against using some makeshift equipment or a blow-up raft. The river will likely become deadly after an earthquake strong ...


3

Science for this is simple: Hypothermia is not instant, and has a well known progression. Survival times in fresh ice water are 15 to 45 minutes; depending on your body build, subcutaneous fat, and muscle mass. At 70 F (20 C) air temps a lightly dressed person loses heat about as fast as he makes it -- around 75 watts. If you are naked, you want it ...


2

If you are swimming or vigorously treading water, two things will happen that make you colder: significantly increased rate of blood flow out to the moving muscles in the arms and legs, which are long and thin and have a lot of surface area to dump heat increased heat transfer from your skin to the water, because a constant flow of new cold water will ...


2

Regardless of the water temperature, trying to swim across a river after an earthquake that brought down a bridge is a probably not a good choice. Underground septic and sewer systems will be damaged, likely contaminating the river for hours to days. Commercial storage facilities for fuel and chemicals are will potentially also contaminate the river water. ...


1

Here are the ideas I've come up with so far... Reasonable: Pay for a helicopter emergency service to go directly to the house. Have an emergency GPS beacon at home to alert a variety of emergency services to my family's exact location, if trapped--assumes the phone lines are either down or overwhelmed. Join a neighborhood safety organization to get local ...


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