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Posts tagged Makassar Strait

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.

Fan-Shaped Delta of the Mahakam River, Indonesia

0.5S 117.1E

September 9th, 2009 Category: Snapshots

Borneo, Indonesia - September 4th, 2009

Borneo, Indonesia - September 4th, 2009

The Mahakam River makes its way from the highlands of the Indonesian island of Borneo, past the city of Samarinda, to its spectacular fan-shaped delta on the Makassar Strait.

The largest river in East Kalimantan, Indonesia,  it is 980 km long and has a catchment area of about 77,000 km2. Here, the radar imagery makes it possible to observe the motion of the water flowing out into the strait between the lobes of the delta.

Some rows of hills, about 100 meters high, cut vertically through the otherwise flat terrain visible in this orthorectified image. In the full-size version, the seaport city of Balikpapan can be seen further south. The small city has two main harbors: Semayang and Kariangau.

Mahakam River at Mouth in Makassar Strait

0.5S 117.1E

July 29th, 2009 Category: Rivers

Indonesia - July 12th, 2009

Indonesia - July 12th, 2009

The Mahakam River is the largest river in East Kalimantan, Indonesia, with a catchment area of about 77,000 km2 and a length of 980 km.

On its way from the highlands of Borneo to its mouth in Makassar Strait, the Mahakam passes by the city of Samarinda, the provincial capital of East Kalimantan.

The Mahakam originates in the Muller mountain ranges where it flows south-eastwards, meeting the River Kedang Pahu at the city of Muara Pahu. From there the river meanders eastward through the Mahakam lakes region, which represents an extremely flat tropical lowland area surrounded by peat land.

Further downstream, the Mahakam meets three other main tributaries (River Belayan, Kedang Kepala, and Kedang Rantau) and flows south-eastwards through the Mahakam delta distributaries, towards the Makassar Strait.

The land in this orthorectified image is mostly flat, with some rows of hills running vertically. Some plots used for agriculture can be seen on the delta by the rivermouth. Ecologically, the river is important as it hosts rare water birds and the Irrawaddy dolphin.

Borneo: Indonesia, Malaysia and Brunei

May 9th, 2009 Category: Snapshots

Borneo - April 23rd, 2009

Borneo - April 23rd, 2009

Borneo is the third largest island in the world and is located at the centre of Maritime Southeast Asia. Administratively, this island is divided between Indonesia, Malaysia and Brunei.

Indonesians refer to the island as “Kalimantan.” However, for people outside of Indonesia, “Kalimantan” refers to the Indonesian part of the island, visible here to the East. Some sediments can be seen along the eastern coast, just below the border with Malaysia.

Malaysia’s region of Borneo is called East Malaysia or Malaysian Borneo, partially visible here to the North and West.

The independent nation of Brunei occupies the remainder of the island, near the coast at the far left edge of the image in the area with the least cloud cover.

Borneo is surrounded by the South China Sea to the north and northwest, the Sulu Sea to the northeast, the Celebes Sea and the Makassar Strait to the east, and the Java Sea and Karimata Strait to the south.

Mahakam River, Borneo, Indonesia

December 9th, 2008 Category: Rivers

Mahakam River, Borneo, Indonesia - November 28th, 2008

Mahakam River, Borneo, Indonesia - November 28th, 2008

This radar (ASAR) image gives us an interesting view of eastern Borneo, Indonesia. We can see the mouth of the Mahakam River, which flows 980 km from the highlands of Borneo to the Makassar Strait. The latter connects the Celebes Sea (north) to the Java Sea (south).

The bright white area along the north bank of the river is the city of Samarinda, the provincial capital of East Kalimantan, about 48 km (30 mi) from the river mouth.

Closer to the mouth, we can see that the land is more fertile and used for agriculture.