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Volcanoes Running East to West Across Java, Indonesia

7.6S 110.7E

September 28th, 2011 Category: Volcanoes

Indonesia - September 25th, 2011

Java (below) is an Indonesian island that lies between Sumatra to the west (left edge) and Bali to the east. Borneo (above) lies to the north and Christmas Island to the south. Java is surrounded by Java Sea in the north, Sunda Strait in the west, Indian Ocean in the south and Bali Strait and Madura Strait in the east.

Java is almost entirely of volcanic origin; it contains thirty-eight mountains forming an east-west spine which have at one time or another been active volcanoes. Several of these can be seen here, their peaks capped with white clouds or snow.


Sediments in Karimata Strait by Kalimantan Barat, Borneo, Indonesia

1S 109.5E

February 24th, 2011 Category: Sediments

Indonesia - February 13th, 2011

Brown sediments pour into the Karimata Strait from a river on the coast of Kalimantan Barat province, Borneo, Indonesia. The Karimata Strait is the wide strait that connects the South China Sea to the Java Sea, dividing the islands of Sumatra from Borneo (Kalimantan), both in Indonesia.

The strait is about 150 km wide, as measured from the east coast of the island of Belitung to the west coast of Borneo (Kalimantan).  The Karimata islands lie in the eastern part of the Karimata strait, northeast of Belitung and off-shore from the west coast of Borneo. Some of those islands can be seen in the lower left quadrant of this image.

Mahakam River Meandering Across East Kalimantan, Indonesia

0.4S 116.9E

February 23rd, 2010 Category: Rivers

Indonesia - January 25th, 2010

Indonesia - January 25th, 2010

The Mahakam River is in Indonesia. It flows 980 km from the district of Long Apari in the highlands of Borneo, to its mouth at the Makassar Strait. Here, it can be seen meandering across the province of East Kalimantan. It is the largest river in that region, with a catchment area of approximately 77,000 km2.

As the river flows eastward, it crosses a flat tropical lowland area surrounded by peat land. The land visible in this this orthorectified image is mostly flat, although some hills can be observed towards the left edge.

Ships in Harbors Near Balikpapan, Indonesia

1.2S 116.8E

February 17th, 2010 Category: Snapshots

Indonesia - January 25th, 2010

Indonesia - January 25th, 2010

Balikpapan is a seaport city on the eastern coast of Borneo island, Indonesia in the East Kalimantan province, a resource-rich region well known for its timber, mining and petroleum export products.

Two harbors, Semayang and Kariangau – ferry harbour, and the Sepinggan International Airport are the main transportation ports to access the city. In this orthorectified image, ships can be seen in the waters near the city.

The topography of the municipality of Balikpapan is generally hilly (85%), with only small areas of flatland (15%), particularly along the coast and surrounding the hilly areas. The hills are less than 100 meters higher than the adjacent valleys. The altitude of Balikpapan ranges from 0 to 80 meters above sea level.

Makaham River and Delta in Borneo, Indonesia

0.5S 117.1E

January 18th, 2010 Category: Rivers

Indonesia - December 31st, 2009

Indonesia - December 31st, 2009

The Mahakam River appears as a black ribbon in this orthorectified image, meandering down from the highlands of Borneo, in Indonesia, towards the Makassar Strait. Along its course it passes the cities of Tenggarong (left) and Samarinda (right). Before spilling into the strait, it branches out into a fan-shaped delta along the coastline.

The Mahakam delta is a mixed fluvial-tidal dominated delta. The delta covers about 1800 km2, consisting of mangrove areas near the shore, Nypa swamps in the central areas, and lowland forest near the apex, corresponding to the first bifurcation, however, recent fishery development in this area has converted a vast area of mangrove into shrimp ponds (tambak).

The delta has three main distributaries system directed Northeast, Southeast and South. The area between distributaries consists of a series of tidal channels generally unconnected to the main distributaries. The distributary channels are narrow and rectilinear with the depth ranging from 8 to 15 m and distributary channel bifurcations appear every 10 to 15 km.

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