Tsunami alarm New Zealand opgeheven

Anneke79

Anneke79

Member
WELLINGTON -

Na een krachtige aardbeving ter hoogte van de zuidelijke kusten van Nieuw-Zeeland is er tijdelijk een tsunami-alarm voor de Pacific afgekondigd, aldus het Amerikaanse Instituut voor Seismologische studies (USGS).
De beving deed zich voor om 11.22 uur Belgische tijd (21.22 uur plaatselijke tijd) en had volgens het USGS een kracht van 7,8 op de schaal van Richter. Nieuw-Zeelandse seismologen hielden het op 6,6.
De beving deed zich voor op 161 km ten westen van Invercargill (op het Zuidelijke Eiland), 33 kilometer onder de zeebodem. Er werd uit voorzorg een tsunami-alarm afgekondigd, maar dat is intussen weer ingetrokken.
De beving was zo sterk dat in enkele supermarkten in de toeristische stad Queenstown waren van het rek donderden. Er zijn ook berichten over scheuren in muren, maar zwaardere schade lijkt er niet te zijn veroorzaakt.

Bron: Het Nieuwsblad
 
Tsunami warning for east coast of Australia

A TSUNAMI warning which put Australia's east coast on red alert last night has passed, but there is still a threat of unpredictable currents at our beaches.
The Australian Bureau of Meteorology (BOM) said Tasmania, Victoria and NSW were under real danger of being swamped by powerful waves on Wednesday night following a major undersea earthquake off the New Zealand coast at 7.22pm (AEST) yesterday.
Coastguards, police and fire services were all put on red alert as the potential danger to low-lying and coastal areas was assessed.
The Joint Australian Tsunami Warning Centre put coastal areas of NSW, Tasmania and Victoria as well as Lord Howe and Norfolk islands on tsunami alert at 8.17pm (AEST).

However, the centre later said it did not expect any major inundation to land and issued the lesser "marine'' version, with people being urged to stay out of the water and away from low-lying areas.
The Hawaii-based Pacific Tsunami Warning Centre said a low-level tsunami was generated near the epicentre, but noted sea levels only reached about 20cm above normal.

The Australian Bureau of Meteorology said small tsunamis, followed by unusual current movements, were detected at Spring Bay in southern Tasmania at 10.05pm and Port Kembla, south of Sydney, at 10.06pm.
A bureau spokesman said it was likely there would be more waves or "unusual currents'' early today.
"Tsunami waves are more powerful than the same size beach waves, with the first wave not necessarily being the largest.''
On Lord Howe Island residents fled to higher ground and police helped locals move their cars
from the coast.
Geoscience Australia, which compiles data and issues warnings jointly with the Bureau of Meteorology, said it was pleased the early warning system had worked well.

Australia began issuing its own tsunami alerts in the wake of the devastating Boxing Day 2004 tsunami which killed more than 300,000 across Asia and destroyed millions of homes.
"All the systems were working very well tonight and we're very pleased about that," Geoscience Australia spokesman Chris Thompson said.
"There was a real scenario where parts of the coast could have been affected and this proves the warning system we have in place works well.
"After the Boxing Day tsunami, Australia began compiling its own data and producing its own warnings.
"We've had minor incidents since then but this is the first time we've had a major warning in Australia.
"It proves we are well protected."

A small tsunami was reported off New Zealand's South Island following the earthquake, which the US Geological Survey (USGS) assessed as 7.8 magnitude.
The USGS assessed an aftershock quake at 5.8, while New Zealand's Institute of Geological and Nuclear Sciences (GNS) put it at 6.1.
The epicentre of the undersea quake was located about 160km west of the city of Invercargill, on South Island, at a depth of about 35km, the US Geological Survey reported.
New Zealand civil defence officials said they had issued only a "potential tsunami" warning for the Southland area.
Radio New Zealand said residents hundreds of kilometres away from the epicentre reported items falling off shelves, but said there were no casualties or serious damage.
One resident of Invercargill told the New Zealand Press Association that the first tremor lasted at least a minute.

Bron: http://www.news.com.au/story/0,27574,25787792-421,00.html
 
What mij gisteren ineens door mijn hoofd schoot was... waar is het woord "vloedgolf" gebleven? Of is dit maar een vreemde kronkel...
 
[quote author=Kathren link=topic=10223.msg143251#msg143251 date=1247734265]
What mij gisteren ineens door mijn hoofd schoot was... waar is het woord "vloedgolf" gebleven? Of is dit maar een vreemde kronkel...
[/quote]

Nee.. niet echt  :grin:. Maar het woord 'tsunami' klinkt nu eenmaal 'specialer' dan een vloedgolf  :lol: Maar ja, blijft vreemd..
 
Ik dacht dat het verschil vooral technisch was - vloedgolf impliceert een golf als gevolg van een hogere vloed dan normaal, maar nog steeds puur als gevolg van het tij. Tsunami's zijn dan uitzonderlijk hoge golven met andere oorzaak dan het tij - zoals een zeebeving. 
 
In Broome wordt gesproken van storm surges, maar soms ook van tsunami's.

Fae
 
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