Global Geological And Climatic Events

Taam Ja’: World’s Deepest Blue Hole

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Taam Ja’ Blue Hole (TJBH) and its location

Mains level: NA

Why in the news?

Researchers have made a discovery in Mexico, uncovering the world’s deepest blue hole, known as Taam Ja’ Blue Hole (TJBH).

What are Blue Holes?

  • Blue holes, such as TJBH, are formed in coastal regions with soluble bedrock, such as limestone, marble, or gypsum.
  • Water percolates through the rock, dissolving minerals and widening cracks, ultimately leading to the formation of sinkholes.
  • Famous examples: 410-foot Great Blue Hole in Belize, the 663-foot Dean’s Blue Hole in the Bahamas and the 328-foot Blue Hole in the Red Sea near Dahab, Egypt.

About Taam Ja’ Blue Hole (TJBH)

  • TJBH extends at least 1,380 feet (420 meters) below sea level, making it the deepest known underwater sinkhole in the world.
  • It is located in Chetumal Bay off the southeast coast of the Yucatan Peninsula.
  • It was first discovered in 2021, was originally thought to be 900 feet deep.
  • This discovery surpasses the previous record-holder, the Sansha Yongle Blue Hole in the South China Sea, by an impressive 480 feet.

Research Expedition and Findings

  • Scientists utilized a conductivity, temperature, and depth (CTD) profiler to collect data about the environmental conditions within the blue hole.
  • Despite reaching depths of 1,640 feet (500 meters), the CTD profiler was unable to reach the bottom of TJBH, indicating its remarkable depth.
  • Data from the profiler suggested the presence of different water layers within the blue hole, with conditions resembling those of the Caribbean Sea at depths below 1,312 feet (400 meters).

PYQ:

[2017] In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration?

1. Abandoned and uneconomic coal seams.

2. Depleted oil and gas reservoirs.

3. Subterranean deep saline formations.

Select the correct answer using the code given below:

(a) 1 and 2 only

(b) 3 only

(c) 1 and 3 only

(d) 1, 2 and 3

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