Author Archives: Dennis SILVERMAN

About Dennis SILVERMAN

I am a retired Professor of Physics and Astronomy at U C Irvine. For a decade I have been active in learning about energy and the environment, and in lecturing and attending classes at the Osher Lifelong Learning Institute (OLLI) at UC Irvine.

Earthquake in the Movie San Andreas Far Greater Than That Expected

The truly frightening scenarios of total San Francisco and Los Angeles destruction in the movie San Andreas is far greater than earthquake science expects. There is already an article at smithsonianmag.com establishing this. The error lies in mixing up the … Continue reading

Posted in Earthquakes, Tsunami | Leave a comment

What’s New in Big Data. Talk at UC Irvine by Prof. Michael Franklin of UC Berkeley

This is a brief account of the talk by Prof. and Chair Michael Franklin, of UC Berkeley Computer Sciences Department, on May 29, 2015. Advances of Data Science and Big Data Analysis: Massively scalable processing and storage Pay as you … Continue reading

Posted in Big Data | Leave a comment

In Philadelphia Train Crash, Energy and Centripetal Force 4.5 Times That for Speed Limit

In coverage of the tragic Philadelphia train crash, the news and public are amazed that the train’s speed is over twice of the limit for the curve being rounded.  The speed was 106 mph, and the speed limit was 50 … Continue reading

Posted in Physics and Crashes | Leave a comment

Building Partnerships for Ocean Health in Southern California

Building Partnerships for Ocean Health in Southern California is a conference in the “Toward a Sustainable 21st Century Series”, presented May 8, 2015, at the Beckman Center for the National Academies, at UC Irvine. Morning Session:  Our Changing Ocean Unfortunately, … Continue reading

Posted in California Water, Climate Change, Oil, Sea Level Rise, UC Irvine | Leave a comment

Fixing the Cloud Problem in Climate Change Models, a Talk by Michael Pritchard

This is a brief summary of a talk by Prof. Michael Pritchard, Department of Earth System Science in the Physical Sciences  Breakfast Lecture Series of the School of Physical Sciences, on May 5, 2015. Michael Pritchard was introduced by Dean … Continue reading

Posted in Climate Change, Solar Energy | Leave a comment

Talk by UC Irvine Chancellor Howard Gilman to the Retirees Association

This is a partial account of UCI Chancellor Howard Gilman’s talk to the Retirees Association on May 5, 2015. (My low speed of taking notes on the iPhone allow me to present only some of the numbers that he stated, … Continue reading

Posted in UC Irvine, University Funding | Leave a comment

California’s Four Year Drought

Here are graphs that show the extent of California’s four year drought. California Snowpack We start with the snowpack which is essential to supply water as it melts over the summer.   You can see that in 2012 and 2013 … Continue reading

Posted in California Water, Climate Change, Irvine Water | Leave a comment

California Hydropower Has Dropped 60% in the Last Four Years

California hydro-power has dropped enormously because of the drought.  The lower water levels put less pressure at the intakes to the turbines, and they generate less power.  At some minimal lake height, they wobble so much that they cannot operate. … Continue reading

Posted in California Power Mixes, California Water, Electric Power, Hydropower, Renewable Energy | Leave a comment

IRWD Irvine Ranch Water District Sources, Use Reduction, and Rates

  Irvine Ranch Water District Water Sources in 2013: 22% Imported from State Water Project and Colorado River Aqueduct 31% Clear Ground Water (GW) 25% Recycled Water 19% Treated GW which is used in grounds and buildings In 2015, IRWD … Continue reading

Posted in California Water, Irvine Water | Leave a comment

Orange County Water Agencies Restrictions for February 2016

From the OC Register, we have copied for inclusion with the set of articles, the new targets for Orange County water agencies to be in force by the end of February 2016. New targets for O.C. water districts Supplier Name … Continue reading

Posted in California Water, Irvine Water | Leave a comment