Ubehebe Crater

 

The Ubehebe Craters include over a dozen maar volcanoes. The largest one is Ubehebe Crater which is 0.8 km wide and 235m deep. They were formed 3,000 years ago.They are hydrovolcanic eruption. When the hot magma reached the water soaked bedrock, in an instant it heated up the water. Suddenly, the steam blasted away the confining rock at a speed of 70m/sec. Momentum Theorem can tell us the net pressure:

 

 

Let, , thus . It does give me some hints about the rock strength.

 

 

 

Ubehebe Inside

 

 

 

 

 

                                                                                                       

 

                                 

Little Hebe

 

 

 

 

By Yingcai Zheng, May 1^st, 2002.

 

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