Last week an Indonesian submarine cruised through the Lombok Strait between the islands of Bali and Lombok to carry out routine testing. But in the early hours of April 21, the 44 year-old KRI Nanggala 402 submarine dropped out of contact and plummeted 838 meters to the ocean floor, taking 53 crew members with it. Indonesian military officials found the sunken vessel broken into three parts on the bottom of the Bali Sea.
While some speculated that the submarine was hit by a foreign missile or a power blackout, Indonesian authorities now suspect the submarine was pulled under by a powerful underwater current called an internal solitary wave.
The ocean is in a constant state of motion with the rise and fall of tides, currents and waves. Waves don't just occur on the surface, they're also generated in deeper water. This is because the density of the ocean changes from the surface to the bottom of the sea floor -the colder the water gets, the more dense it becomes.
1艘印尼潛艦上週於峇里島與龍目島之間的龍目海峽巡航，實施例行測試任務。惟於4 月 21 日凌晨，這艘艦齡44歲的「神鋤號」失聯，與艦上53名成員，一併沉墜至838公尺深的海床。印尼軍方官員在峇里海底部找到了這艘沉沒斷成3截的潛艦。
To fall or drop straight down at high speed.
To believe especially on uncertain or tentative grounds.
A failure of electrical power supply.
Power rationing and rolling blackouts were the norm even before war damage slashed the amount of power available in Gaza.
We who lived in concentration camps can remember the men who walked through the huts comforting others, giving away their last piece of bread.--Viktor E. Frankl