Wednesday, April 2, 2014

Animal Behavior

Drudge Report provides a link to a story in something called Epoch Times about animals (elk, bison) supposedly fleeing Yellowstone National Park in fear of an impending earthquake/volcanic event. It isn't impossible but read the following.

Several years ago the other DrC and I sat in our truck and watched a herd of about 200 bison trot across the highway between Jackson, WY, and Moran Junction, perhaps 50 miles south of Yellowstone NP. It took a few minutes for the whole herd to pass before us happy spectators.

Some years before that we watched a herd of perhaps 20 elk, beautiful creatures, loping alongside the interior park road north of Moose, WY. Ungulates do group "runs" on occasion, albeit not very often. When it's a group of cattle running we call it a "stampede."

Did those sightings mean we were expecting a seismic event? No, at least none followed. Do we get seismic activity in the greater Yellowstone region? We do, much of the national park is in fact a giant volcanic caldera, which is why there are thermal features: geysers, mud pots, hot springs, and yes, earthquakes.

As long-time summer residents in the region, we have no increased expectation of quake or eruption as a result of reported animal groups traveling toward the park boundaries. Relatively soon large groups will migrate back into the park as the weather warms, the snow melts, and the elk and bison move back into the Yellowstone high-country summer range. It is a migration the DrsC will join at some point.