FILE PHOTO: A plume rises over Tonga when the underwater volcano Hunga Tonga-Hunga Ha'apai erupted in this satellite image taken by Himawari-8, a Japanese weather satellite operated by Japan Meteorological Agency, on January 15, 2022 and released by National Institute of Information and Communications Technology (NICT) and obtained by Reuters on January 16, 2022. National Institute of Information and Communications Technology (NICT)/Handout via REUTERS
SINGAPORE (Reuters) - Scientists are struggling to monitor an active volcano that erupted off the South Pacific island of Tonga at the weekend, after the explosion destroyed its sea-level crater and drowned its mass, obscuring it from satellites.
The eruption of Hunga-Tonga-Hunga-Ha'apai volcano, which sits on the seismically active Pacific Ring of Fire, sent tsunami waves across the Pacific Ocean and was heard some 2,300 kms (1,430 miles) away in New Zealand.
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