Located in the middle Satonda including Dompu region , NTB . This lake has unique because the water is salty as sea water . It is estimated that the lake water is salty because it is saturated with seawater overflowed and trapped in the lake when Mount Tambora erupted ( similar to the lake Kakaban ) . This is possible because the distance Satonda with Mount Tambora is very close and is known as an eruption
Tambora eruption of very heavy so it may cause a tidal wave ( tsunami ) that powerful anyway .
Satonda vast lake approximately 2.5 km2 and is not known to exist in the type of habitat in this lake because the research has not been done .
Distance from Samawa Seaside Cottages toward Lake Satonda about 60 minutes research by boat.
Two European scientists , Stephan Kempe and Josef Kazmierczak , pioneering research at the lake . They first visited the lake when the Dutch Indonesian Satonda Snell II Expedition in November 1984 , and then returned to research in 1989 and 1996 .
For both, Satonda is a rare phenomenon because of the salty water with alkalinity ( alkalinity level ) is very high compared with sea water generally . They then try to reconstruct the history of the formation of the lake and its ecosystem .
Kempe and Kazmierczak pour some of the results of their research in an article titled Microbialites and Hydrochemistry of the Crater Lake of Satonda , 1996 . Both argue , Satonda basin coincided with the formation of a crater more than 10,000 years ago .
Originally , it contained a freshwater lake , which is evidenced from peat deposits beneath the sea minerals in sediments resemble the edge of the lake . The lake was then flooded with sea water that seeps through the cracks of the crater wall collapsed . At that time , sea levels 1 meter – 1 , 5 meters higher than today.
However , sea level is slowly shrinking . Screening of sea water through the walls of the crater was slowed . Now , the water level of the lake is relatively stable , which marks no longer relationship with the sea water .
The presence of stromatolites in Satonda be very interesting because it shows these lakes have an environment that resembles an ancient ocean , Precambrian . Stromatolites in the modern world only found in water with very high salinity . Satonda for scientists to be a model that reflects the contemporary environmental conditions in ancient oceans .
During its development , Kempe and Kazmierczak wrote , rain makes the water surface of the lake becomes more bargaining . Another suggestion which leads to reduced salinity surface water of the lake is the eruption of Tambora in 1815 .
Tambora eruption has destroyed forests in Satonda . The lack of trees leads to reduced evaporation , too much rain water collected in the crater . It causes the upper layers of water become more fresh . At the same time , some of the water that is older and more depressed salted down or out of the lake through the pores of volcanic rocks open .