hydrosphere

EARTH Magazine: Reading the Ridges - Are Climate and the Seafloor Connected?

EARTH Magazine

From EARTH Magazine, May 2, 2016  --  EARTH Magazine plunges into the depths of the ocean with scientists seeking whether Earth's climate and sea-level history are intrinsically linked with tectonics at mid-ocean ridges. Since these ridges are not as well studied as terrestrial volcanoes, largely given the challenge to access them, teams of researchers are using tectonic models, evidence from high-resolution mapping of different spreading ridges and sediment cores to examine the evidence. 

The Flint Water Crisis – What is happening, and what are the consequences? - PAESTA Podcast Series: Episode 7

You Asked, We Answered!

Transcript for the podcast

Hello my name is James Clark and I am an undergraduate student at Penn State Brandywine. In this podcast, I will be answering the following questions that pertain to the Flint water crisis. Who is to blame? What caused the Flint water crisis? Was the Flint water crisis preventable? What are the lasting consequences? What are the political ramifications? Along with these questions, I will also answer some common questions that people are asking about the Flint water crisis.

Listen Current: Pollution Melts Glaciers

Listen Current

From Listen Current, April 2016  --  The glaciers in the European Alps started melting rapidly in the 1860s. But that didn’t correspond with the warming of the European climate at the end of what is known as the Little Ice Age. That warming didn’t occur until the 1910s. To understand the causes of the glacial melt, scientists considered the possible impact of the Industrial Revolution, which began in the 1840s. The recent melting in the Rocky Mountains of America could be caused by the same reasons.

Listen Current: Drought Eases in California

Listen Current

From Listen Current, 04/06/2016  --  The severe drought in California resulted in a state-wide mandate of 25% reduction in water use last year. This affects many residents, especially those who make a living in farming and agriculture. The snowpack in the Sierra Nevada mountains feeds water into the state’s reservoirs, which supplies about 30% of the state’s water needs. Last year the snowpack was 5% of average. This year, it’s about 95%. Even though it’s just below average, this is a great improvement.

EARTH Magazine: Protracted Drought Threatens California Levees

EARTH Magazine

From EARTH Magazine, 03/18/2016  --  We're most accustomed to flooding causing levees to fail, like they did in New Orleans during Hurricane Katrina. So although the El Nino-induced floods are making the most news in California right now, it's not actually the floods that are threatening some California levees the most. Instead it's the severe drought over the last four years that has taken its toll on thousands of kilometers of century-old earthen levees. 

EARTH Magazine: Hidden Double Earthquakes Spells Trouble for Tsunami Warning Systems

EARTH Magazine

From EARTH Magazine, 03/08/2016  --  A magnitude-7.1 earthquake struck Chile on Jan. 2, 2011, or so scientists thought. Now, with increasing sensor sensitivity and advances in the quantitative analysis of earthquakes, scientists have revealed that this quake was actually a doublet. This meant that instead of just one massive quake, two similarly large earthquakes struck very near to one another within seconds. 

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