New Delhi, February 21: The Dead Sea, or the “Mortal Sea,” is one of the most unique lakes in the world. Its name raises the question: why is it called “dead”? The astonishing fact is that no life can thrive in its waters. NASA provides detailed insights into this phenomenon.
The primary reason for this is the extremely salty water. The salt concentration is so high that fish, plants, and most organisms cannot survive here. This is why it has earned the name “Dead Sea.” Unlike a typical sea, it is a saline reservoir located on the border between Israel and Jordan, making it the lowest point on Earth’s surface. It lies approximately 400 meters, or 1,300 feet, below sea level, making it the lowest point on the planet. The salinity of its water is 8 to 10 times greater than that of normal seawater.
Due to the high salt content, the density of the Dead Sea’s water is significantly increased. As a result, objects do not sink but float on the surface.
Images captured by NASA’s Landsat satellites further illustrate its unique features. Photos taken in 1972, 1989, and 2011 show deep blue waters alongside bright blue and light pink hues. Small patches of green and bright red indicate some greenery. The images also clearly depict the Lisan Peninsula, which acts as a natural bridge dividing the Dead Sea into two parts. During the hot, dry summer months, the water evaporates rapidly, with levels dropping by 2 to 3 centimeters in a single day. This rapid evaporation has led to a significant decrease in water levels over the past few decades.
The history of the Dead Sea is ancient. For thousands of years, it has attracted tourists and industries. The ancient Egyptians used its salt for mummification, as fertilizer, and for producing potash. Today, sodium chloride and potassium salts extracted from the area are used for water purification, snow removal from roads, and PVC plastic production. Over the last 40 years, large-scale salt extraction projects have increased, as evident in satellite images.
This region also holds considerable religious and historical significance. Between 1947 and 1956, ancient manuscripts known as the “Dead Sea Scrolls” were discovered in caves along the northeastern shore. These scrolls contain over 972 texts, representing some of the oldest preserved portions of the Hebrew Bible and other Judeo-Christian writings. This discovery has been a monumental achievement for historians.
NASA and the U.S. Geological Survey jointly operate the Landsat program. Their images and data are available online for everyone. Through these resources, scientists monitor changes in the Dead Sea.
Leave a Comment