Earth Snapshot RSS Feed Twitter
 
 
 
 

Search Results for "gran desierto de altar":

Salton Sea, Gran Desierto de Altar and Mouth of Colorado River, USA and Mexico

33.2N 115.7W

October 26th, 2012 Category: Deserts, Lakes, Rivers, Sediments

USA and Mexico – October 26th, 2012

Visible in the upper left quadrant of this image is the Salton Sea, a huge but shallow, saline, endorheic rift lake located directly on the San Andreas Fault, predominantly in California’s Imperial and Coachella Valleys.

The lake occupies the lowest elevations of the Salton Sink in the Colorado Desert of Imperial and Riverside counties in Southern California. The sea is fed by the New, Whitewater, and Alamo rivers, as well as agricultural runoff drainage systems and creeks. Visible south of the sea is irrigated land in southern California and Mexico.

In the lower right quadrant, sediments from the Colorado River can be observed spilling into the Gulf of California or Sea of Cortez. The Gran Desierto de Altar, one of the major portions of the Sonoran Desert of Mexico, can also be seen extending across much of the northern border of the Gulf of California. It reaches more than 100 kilometers east to west, and over 50 km north to south, and constitutes the largest continuous wilderness area within the Sonoran Desert, as well as including the only active erg dune region in North America.

Salton Sea and Gran Desierto de Altar Near Gulf of California, USA and Mexico

33.2N 115.7W

February 22nd, 2012 Category: Deserts, Lakes

USA and Mexico - January 2nd, 2012

Visible as a navy blue area near the center of the left edge of this image of western USA and northwestern Mexico is the Salton Sea, a shallow, saline, endorheic rift lake located directly on the San Andreas Fault, predominantly in California’s Imperial Valley. The lake occupies the lowest elevations of the Salton Sink in the Colorado Desert of Imperial and Riverside counties in Southern California.

While it varies in dimensions and area with fluctuations in agricultural runoff and rainfall, the Salton Sea averages 15 mi (24 km) by 35 mi (56 km). With an average area of roughly 525 sq mi (1,360 km2), the Salton Sea is the largest lake in California. Average annual inflow is 1,360,000 acre·ft (1.68 km3), which is enough to maintain a maximum depth of 52 ft (16 m) and a total volume of about 7,500,000 acre·ft (9.3 km3).

An agricultural area can be seen south of the lake, near the edge of the Gran Desierto de Altar, one of the major portions of the Sonoran Desert of Mexico, including the only active erg dune region in North America. It extends across much of the northern border of the Gulf of California, reaching more than 100 kilometers east to west, and over 50 km north to south, and constitutes the largest continuous wilderness area within the Sonoran Desert.

The Gran Desierto covers approximately 5,700 km2, most of it in the Mexican state of Sonora. The northernmost edges overlap the border into southwestern Arizona. The dominant sand sheets and dunes range in thickness from less than one meter to greater than 120 meters. The total volume of sand in the Gran Desierto is about 60 km3. Most of that volume was delivered by the Pleistocene Colorado River which flowed through the present-day Gran Desierto area. The present-day Colorado River can be seen emptying sediments into the northern part of the Sea of Cortez (Gulf of California).

Gran Desierto de Altar Between Salton Sea and Sea of Cortez, USA and Mexico

32.7N 115W

December 26th, 2010 Category: Deserts, Lakes, Volcanoes

Mexico - December 23rd, 2010

The large body of water in the upper left corner is the Salton Sea, a saline, endorheic rift lake located directly on the San Andreas Fault in California, near the border with Mexico.

The sea is fed by the New, Whitewater, and Alamo rivers, as well as a number of minor agricultural drainage systems and creeks. The green sediments in the Sea of Cortez (or Gulf of California) in the bottom half of the image, however, are from a different river: the Colorado River.

Between the Salton Sea and the Sea of Cortez lies the Gran Desierto de Altar, part of the Sonoran Desert. A dark brown, almost circular area can be seen in the lower part of the dune field: the Pinacate Peaks (Sierra Pinacate), a volcanic group of volcanic peaks and cinder cones.

Agriculture Between Salton Sea and Gran Desierto de Altar, USA and Mexico – July 27th, 2010

31.8N 113.6W

July 27th, 2010 Category: Image of the day, Lakes, Rivers, Volcanoes

Mexico - June 23rd, 2010

Mexico - June 23rd, 2010

Greenish sediments flow forth from the Colorado River, around Montague Island, and into the Sea of Cortes, left of the image center. Upon opening the full image, more of the sea and the Baja California peninsula in Mexico can be observed.

Near the north shores of the sea is the Gran Desierto de Altar, part of the Sonoran Desert. The dark brown circular area amidst the tan dunes is the Pinacate Peaks (Sierra Pinacate), a volcanic group of volcanic peaks and cinder cones.

Following the river northwards, one comes to an irrigated area in this arid region – the Imperial Valley in southern California. Continuing northwards through the agricultural zone, one finds the Salton Sea, a saline lake. The largest such lake in California, it covers a surface area of approximately 376 sq mi (970 km2).

Desert Features Near Gulf of California, USA and Mexico

33.2N 115.7W

April 1st, 2012 Category: Deserts, Lakes

USA - March 31st, 2012

This image stretches from southwestern USA (above) to northwestern Mexico (below). Several interesting geographical features can be observed near the border between the two countries. Near the center of the left edge is the Salton Sea, which provides irrigation for the crops seen growing in the otherwise desert area southeast of the lake. This desert area, part of the Gran Desierto de Altar, reaches the Gulf of California (Sea of Cortez). Sediments from the Colorado River can be seen pouring into the northern end of the gulf.