Given that the region is so seismically active, Niwa is in a unique position to investigate Hunga Tonga’s dramatic impact. Their vessel, the RV Tangaroa, surveyed thousands of square kilometers of the seafloor and collected video images and physical samples, which are now being studied back on land. In April 2022, New Zealand’s National Institute of Water and Atmospheric Research (Niwa) launched an ocean voyage to the site Tonga’s dramatic eruption.
But Hunga Tonga’s eruption has galvanised the scientific community and underscored the need for further exploration of this uncharted realm. Volcanos in the deep sea are much more difficult to locate than those at ground level indeed, we know more about the surface of the Moon than we do about the ocean floor. Who are the people trying to find where the next underwater volcano is hiding? And where do they look next? With increasingly sophisticated methods of detection, volcanologists hope to improve early warning systems, determine environmental impact, mitigate hazards posed by eruptions, and aid in ecosystem recovery. The dive to find the world’s deepest shipwreck.Now, the hunt is on to find these underwater seamounts in order to protect land and ocean alike. It prompted scientists to rethink their ideas on the hazards posed by the many submarine volcanoes lurking beneath the oceans. The Hunga Tonga eruption remains a humanitarian disaster for the nearly 100,000 people who live in Tonga – and an unfolding tale of mystery and caution for the world. A column of ash rose to never before seen heights, lingering in the outer reaches of the planet’s atmosphere. Remote sensors recorded powerful shock waves reverberating across the globe for days. The South Pacific nation was all but cut off from the rest of the world after an undersea communications cable was severed by the explosion, but satellites captured hundreds of lightning discharges issuing forth from the volcano’s ash clouds. Volcanologists were able to document the underwater mountain’s violent release in real time, and what they found confounded their expectations. The Hunga Tonga-Hunga Ha’apai eruption and resulting tsunami were different, however. Nearly a century and a half later, on 15 January 2022, another underwater giant awoke from its slumber, this time off the shores of Tonga. Krakatoa remains one of the most deadly underwater eruptions in history. The eruption killed tens of thousands of people. Then, on 26 August, an underwater volcano ejected approximately 25 km3 (six cubic miles) of debris, hurtling pumice ash and boiling lava flows across nearby settlements. During the summer of 1883, a caldera in the Sunda Strait, located between the islands of Java and Sumatra, became increasingly turbulent, releasing huge plumes of ash and steam into the sky.
0 kommentar(er)
