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New Pressures Building Beneath California CalderaYOWUSA.COM, 14-November-03
Recent Solar ActivityRecord-breaking solar activity recently has been at an all time high. In fact, on November 4, 2003 the Sun unleashed a solar flare of monumental proportions that astronomers created a new "X" class to record the increased and extraordinary solar activity. BBC News Online, 5-November-2003
The blast sent billions of tonnes of superhot gas into space - some of it directed towards our planet. Scientists say the Sun's current spate of activity has produced the most dramatic events seen on the solar surface since regular monitoring began. Space weather forecasters have been kept busy tracking the impact of geomagnetic storms on the Earth. This kind of solar activity is worrisome since seismic and volcanic activity is already at an all-time high creating observable and increased changes to our planet. YOWUSA.COM, 02-November-2003
YOWUSA.COM, 11-June-2003
For Californians, the concern of catastrophic earthquakes is more on their minds than an impending volcanic eruption. However, the fact of the matter is that California has three active and two inactive volcanoes, and a caldera smaller than Yellowstone, but just as deadly, has been a threat in the past and is becoming an increasing threat now. This caldera, called the Long Valley Caldera, is located in the eastern part of California. Volcanic Activity in California?The USGS considers a volcano active if it has been active within the past 2000 years. A volcano that has not erupted in more that 2000 years is potentially active. In California, the three active volcanoes are Mount Shasta, Medicine Lake and Lassen Peak. The two potentially active volcanoes are Coso and Clear Lake. Topinka, USGS/CVO, 1999
Nevertheless, what about Long Valley? According to the USGS, Long Valley is also an active volcano and continues to be very active. So much so that monitoring and research activity at Long Valley appears to be just as focused and detailed as Yellowstone. USGS, Long Valley Observatory, 13-November-2003 The concentration of carbon dioxide in soil gas at Mammoth Mountain is currently being monitored on a continuous, year-round basis at four sites - three at Horseshoe Lake and one near the base of Chair 19 at the ski area. Evaluations of anomalous changes in concentration are made by researchers at the USGS Cascades Volcano Observatory (McGee and others, 1998).
Carbon dioxide flux (the rate at which CO2 gas comes out of the ground) is monitored periodically at each tree kill area. [1] [2] |
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