lithosphere

PAESTA Podcast Series: Episode 4 - What is a Watershed?

You Asked, We Answered!

Transcript for the podcast

We all live in a watershed – think of it as your ecological address, and no matter where you are on land, any water that falls in that same location has a drainage destination determined by elevation and landforms. A watershed is an area of land where the surface water (including lakes, streams, reservoirs, and wetlands) and the underlying groundwater flows from a higher to lower elevation. Streams and rainfall within a watershed will typically drain to a common outlet, such as the outflow of a reservoir, mouth of a bay, or any point along a stream channel. The word watershed is sometimes used interchangeably with drainage basin or catchment.

Teachable Moment from IRIS - Magnitude 7.0 near Solomon Islands on 07/18/15

IRIS

07/18/15  --  IRIS does an excellent job collecting and preparing resources we can use in our classrooms on recent, significant earthquakes. Check out their PowerPoint, visualizations and animations on this powerful 7.0 magnitude earthquake that struck offshore in the Solomon Islands. The earthquake occurred northwest of Lata, Nendö at a depth of 10 kilometers, according to the US Geological Survey.

IRIS page: http://www.iris.edu/hq/retm/3657

EARTH Magazine: Studies Re-examine How Major Copper Deposits Form

EARTH Magazine

From EARTH Magazine, 06/24/2015  --  Humans depend on copper for everything from electrical wiring to water pipes. To meet demand, the metal has been largely mined from Porphyry Copper Deposits (PCDs). For decades, scientists generally agreed upon the geological processes behind PCD formation; now EARTH Magazine examines two new studies that suggest alternatives to these long-held understandings.

Teachable Moment from IRIS - Magnitude 7.0 Southern Mid-Atlantic Ridge on 06/17/15

IRIS

06/17/15  --  IRIS does an excellent job collecting and preparing resources we can use in our classrooms on recent, significant earthquakes. Check out their PowerPoint, visualizations and animations on this powerful magnitude 7.0 earthquake that occurred in the Southern Atlantic Ocean.  The earthquake was located about 2750 km (1709 mi) SE of Arraial do Cabo, Brazil.  This shallow earthquake occurred on or near a transform fault forming part of the South American - African Plate boundary.

IRIS page: http://www.iris.edu/hq/retm/3584

Listen Current: State versus Towns Over Fracking

Listen Current

June 4, 2015   --  The practice of fracking or extracting gas from deep inside the earth has pitted cities and towns in Texas against the state of Texas. The Texas state legislature has passed a law that takes the power to regulate the gas industry away from the cities and towns directly impacted by fracking. Who should have power to decide what happens in a town - the citizens of that town or the state legislature?

Teachable Moment from IRIS - Magnitude 7.8 Bonin Islands, Japan on 05/30/15

IRIS

05/30/15  --  IRIS does an excellent job collecting and preparing resources we can use in our classrooms on recent, significant earthquakes. Check out their PowerPoint, visualizations and animations on this powerful magnitude 7.8 deep earthquake that occurred near the Bonin Islands.  The earthquake was located about 874 km (543 mi) south of Tokyo, Japan and west of the Izu Trench.  This earthquake occurred at a depth of 678 km (421 miles) within the Pacific Plate where it subducts beneath the Philippine Plate.

EARTH Magazine: Rock Stars - Geologists on the Silver Screen

EARTH magazine

From EARTH magazine, 05/27/15  --  As this summer's blockbuster movie season gets underway, EARTH Magazine asks an important question: In movies, "are geologists portrayed as heroes or villains?" The topic of how geologists are portrayed in film has been oft-debated around a campfire, or over a frosty beverage at the end of a day of fieldwork, but now four scientists bring some serious analysis to the subject in the June issue feature, "Rock Stars - Geologists on the Silver Screen."

Teachable Moment from IRIS - Magnitude 7.3 Nepal on 05/12/15

IRIS

05/07/15  --  IRIS does an excellent job collecting and preparing resources we can use in our classrooms on recent, significant earthquakes. Check out their PowerPoint, visualizations and animations on this powerful magnitude 7.3 earthquake that occurred near Mount Everest. Early reports suggest 32 people have been killed and at least 1,000 were injured in the earthquake. The region is still in recovery from a 7.8 magnitude earthquake that occurred on April 25, killing more than 8,000 people.

Teachable Moment from IRIS - Magnitude 7.1 Papua New Guinea on 05/07/15

IRIS

05/07/15  --  IRIS does an excellent job collecting and preparing resources we can use in our classrooms on recent, significant earthquakes. Check out their PowerPoint, visualizations and animations on this powerful magnitude 7.1 earthquake that hit off the western coast of Bougainville Island on Thursday, approximately 144 km (89 mi) southwest of Panguna. There were no immediate reports of damages or casualties.

IRIS page: http://www.iris.edu/hq/retm/3394

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