A rare volcano-triggered tsunami sparked by the eruption of Hunga Tonga-Hunga Ha’apai in Tonga could have been caused by shock waves or shifting underwater land, experts said
The phenomenon confused weather agency officials, as tide level changes were only a few dozen centimeters at some observation points and they changed too quickly for a tsunami.
Shock waves, landslides may have caused rare volcano tsunami-experts jamaicaobserver.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from jamaicaobserver.com Daily Mail and Mail on Sunday newspapers.
A rare volcano-triggered tsunami sparked by the eruption of Hunga Tonga-Hunga Ha'apai in Tonga could have been caused by shock waves or shifting underwater land, experts said Monday.
Explosive Eruption at La Soufrière Volcano, St. Vincent - Situation report No. 16 as of 8:00 pm on 17 April, 2021
Format
Situation Overview
The following was reported in the NEMO, St Vincent and the Grenadines, La Soufriere Bulletin #66, April 17, 2021 at 11:00am:
• The swarm of long-period and hybrid earthquakes continued at La Soufrière Volcano.
• The rate of occurrence of these earthquakes dropped significantly at about 8 pm on 16 April and has remained
near-constant since.
• No episodes of tremor have been recorded in the last 12 hours.
• The new crater, measures approximately 900 m N to S and at least 750 m E to W. The crater is thought to be at least