volcano A place on Earth's crust that opens, allowing magma and gases to spew out from underground reservoirs of molten material. (sciencenewsforstudents.org)
Famiglietti and his team determined that some 13 trillion gallons of water had been lost from underground reservoirs in the Colorado River basin since the NASA satellites began collecting data in late 2004. (scientificamerican.com)
Also, it becomes cost - effective to implement technologies that capture and store emissions from fossil - and bio-fuel based electricity in underground reservoirs when carbon dioxide emissions to the atmosphere carry a cost. (pnnl.gov)