Australian scientists embark on voyage to unlock secrets of earthquakes

by IANS |

Canberra, Nov 23 (IANS) Researchers from Australian National University (ANU) have embarked on a voyage to unlock the secrets of the Earth's inner layers.

The ANU-led team on November 10 departed on a three-week mission to retrieve 27 seismometers -- instruments that record the motion of the ground during earthquakes -- from the ocean floor near Macquarie Island in the Southern Ocean, Xinhua news agency reported.

The instruments were deployed in October 2020 pointing at the Earth's center and have been collecting data on extreme underwater earthquakes.

Researchers are hopeful that the data will help them better understand the inner layers of the Earth and what causes underwater earthquakes and tsunamis.

"It's in an area where the Australian plate meets the Pacific plate, but it's not known as an active subduction zone, so these earthquakes are still a mystery to us," Chief scientist Hrvoje Tkalcic from ANU's Research School of Earth Sciences said in a media release on Monday.

"Scientifically, the most exciting pay-off of this project may be that it could help us add missing pieces to one of the biggest puzzles in plate tectonics -- how subduction begins.

"Researchers have grappled with this question for decades, probing active and extinct subduction zones around the world for hints, though the picture remains murky."

However, the team must first recover the devices from depths of up to 5,500 meters on the Macquarie Ridge -- a slope steeper than any mountain on the Earth's surface.

The Commonwealth Scientific and Industrial Research Organization (CSIRO) commissioned New Zealand research vessel RV Tangaroa for the 24-day voyage.

Tkalcic said it could take up to six hours to retrieve a single seismometer and another two hours to ascend back to the surface.

"The instruments have been surrounding Macquarie Island, a region in the Southern Ocean's Furious Fifties latitudes renowned for its extreme seas and weather," he said.

"The weather was often merciless during our instrument deployments. We faced gale-strength winds and waves that forced us to 'heave-to' or shelter in the lee of Macquarie Island for roughly 40 percent of our time in the study area."

Latest News
Want to Recover Deleted Photos ? Download any of these apps from Google Play Store Sun, Dec 05, 2021, 04:04 PM
Instagram new feature to make Comments made by people you do not like to be invisible to others Sun, Dec 05, 2021, 03:05 PM
Flipkart Offers 40-inch KODAK 7X Pro worth Rs.20,999 just @ Rs.5,999 Sun, Dec 05, 2021, 02:45 PM
Is Your Laptop Slowing Down ? Increase your Laptop Performance by following these tips Sun, Dec 05, 2021, 02:01 PM
AIFF bars Chennai City from I-League 2021-22, Kenkre FC named as replacement Sat, Dec 04, 2021, 10:30 PM
IND vs NZ, 2nd Test: I tried to bowl to the stumps and be consistent, says Siraj Sat, Dec 04, 2021, 10:28 PM
Uncertain Shakib picked in Bangladesh squad for New Zealand Tests Sat, Dec 04, 2021, 10:27 PM
Very illustrious group to be a part of, special that it came in Mumbai, says Ajaz on historic 10-wicket haul Sat, Dec 04, 2021, 10:25 PM
I know from now on the expectations will only go up: Kumble to Ajaz Sat, Dec 04, 2021, 10:24 PM
'Perfect 10': Ajaz Patel enters history books alongside Laker, Kumble Sat, Dec 04, 2021, 10:22 PM
Pune Open Golf: Chadha cruises to six-shot win, rookie Kartik posts career-best 2nd place Sat, Dec 04, 2021, 10:21 PM
IND vs NZ, 2nd Test: India tighten noose around Kiwis, lead by 332 runs Sat, Dec 04, 2021, 10:19 PM
Taking probiotics may improve nausea, vomiting in pregnancy Sat, Dec 04, 2021, 09:40 PM
England's Eileen Ash, world's oldest living Test cricketer, dies at 110 Sat, Dec 04, 2021, 09:38 PM
Scientists developing chewing gum that could reduce SARS-CoV-2 transmission Sat, Dec 04, 2021, 09:38 PM