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San Francisco and Bridges Crossing San Francisco Bay, USA – February 24th, 2012

37.7N 122.4W

February 24th, 2012 Category: Image of the day

USA - December 28th, 2011

The bright white parts of this orthorectified image mainly belong to the city of San Francisco (lower left quadrant) and the San Francisco Bay Area, a populated region that surrounds the San Francisco and San Pablo estuaries in Northern California. The region encompasses major cities and metropolitan areas of San Francisco, Oakland, and San Jose, along with smaller urban and rural areas.

Several bridges can be observed as white lines spanning the estuaries, including the San Francisco-Oakland Bay Bridge (east of San Francisco), the Golden Gate bridge (north of San Francisco) and the Richmond-San Rafael Bridge (northeast of San Francisco), the northernmost of the east–west crossings of the San Francisco Bay in California, USA, connecting Richmond on the east to San Rafael on the west end.

Turin and Milan Near the Alps, Italy – February 22nd, 2012

45.4N 9.1E

February 22nd, 2012 Category: Image of the day, Mountains

Italy - February 2nd, 2012

This orthoctified wide-swath ASAR image shows the contours of the Alps, arching across northern Italy. The Alps is one of the great mountain range systems of Europe, stretching from Austria and Slovenia in the east through Italy, Switzerland, Liechtenstein and Germany to France in the west.

Much of the southern edge of the Alps is clearly delimited by the basin of the River Po. Here the cities of Milan (center) and Turin (left) can be seen near the foot of the Alps, appearing as bright white areas in the Po Valley. Visible along the southern part of the valley is the beginning of the Apennines mountain chain. The boundary between the Apennines and the Alps is usually taken to be the Colle di Cadibona, at 435 m above sea level, above Savona on the Italian coast.

Mount Teide Volcano on Tenerife, Canary Islands – January 20th, 2012

28.2N 16.6W

January 20th, 2012 Category: Image of the day, Volcanoes

Tenerife - January 9th, 2012

This orthorectified image shows Tenerife, the largest and most populous island of the seven Canary Islands. It is a rugged and volcanic island sculpted by successive eruptions throughout its history. Tenerife is the largest island of the Canary Islands archipelago, with a surface area of 2,034.38 km2 (785 sq mi) and the longest coastline amounting to 342 km (213 mi).

In addition, the highest point, the volcano Mount Teide, with an elevation of 3,718 m (12,198 ft) above sea level is the highest point in all of Spain. It is the third highest volcano in the world measured from its base on the ocean floor, after Mauna Loa and Mauna Kea located in Hawaii.

Cordillera Central: Mountains of Puerto Rico – January 17th, 2012

18.2N 66.4W

January 17th, 2012 Category: Image of the day, Mountains

Puerto Rico - January 3rd, 2012

This orthorectified wide-swath ASAR image shows the island of Puerto Rico. The maximum length of the main island from east to west is 180 km (110 mi), and the maximum width from north to south is 65 km (40 mi). Puerto Rico is the smallest of the Greater Antilles.

Puerto Rico is mostly mountainous with large coastal areas in the north and south. The main mountain range is called “La Cordillera Central” (The Central Range). The highest elevation in Puerto Rico, Cerro de Punta 1,339 meters (4,393 ft),[117] is located in this range. Another important peak is El Yunque, one of the highest in the Sierra de Luquillo at the El Yunque National Forest, with an elevation of 1,065 m (3,494 ft).

Houston and Galveston Bay in Texas, USA – January 15th, 2012

29.3N 94.6W

January 15th, 2012 Category: Image of the day

USA and Canada - December 26th, 2011

This orthorectified image shows the city of Houston, Texas, by Galveston Bay. The bay is a large estuary located along the upper coast of Texas in the United States. It is connected to the Gulf of Mexico and is surrounded by sub-tropic marshes and prairies on the mainland. The water in the Bay is a complex mixture of sea water and fresh water which supports a wide variety of marine life.

The Galveston Bay system actually consists of four main subbays: Galveston Bay proper (upper and lower), Trinity Bay, East Bay, and West Bay. The Bay is fed by the Trinity River and the San Jacinto River, numerous local bayous and incoming tides from the Gulf of Mexico. Many smaller bays and lakes are connected to the main system such as Christmas Bay, Moses Lake, Dickinson Bay, Clear Lake, Ash Lake, Black Duck Bay, and San Jacinto Bay. The Bay covers approximately 600 square miles (1,500 km²), and is 30 miles (50 km) long and 17 miles (27 km) wide. Galveston Bay is on average 7–9 feet (3 m) deep.

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