patrick05 Posted April 11, 2012 Share Posted April 11, 2012 from USGS Magnitude 8.7 - OFF THE WEST COAST OF NORTHERN SUMATRA 2012 April 11 08:38:38 UTC Earthquake Details This event has been reviewed by a seismologist. Magnitude 8.7 Date-Time Wednesday, April 11, 2012 at 08:38:38 UTC Wednesday, April 11, 2012 at 02:38:38 PM at epicenter Time of Earthquake in other Time Zones Location 2.348°N, 93.073°E Depth 33 km (20.5 miles) Region OFF THE WEST COAST OF NORTHERN SUMATRA Distances 434 km (269 miles) SW of Banda Aceh, Sumatra, Indonesia 550 km (341 miles) SW of Lhokseumawe, Sumatra, Indonesia 963 km (598 miles) W of KUALA LUMPUR, Malaysia 1797 km (1116 miles) WNW of JAKARTA, Java, Indonesia Location Uncertainty horizontal +/- 14 km (8.7 miles); depth +/- 2.8 km (1.7 miles) Parameters NST=243, Nph=243, Dmin=514.3 km, Rmss=1.67 sec, Gp= 36°, M-type=regional moment magnitude (Mw), Version=8 Source Magnitude: USGS NEIC (WDCS-D)Location: USGS NEIC (WDCS-D) Event ID usc000905e map Link to comment Share on other sites More sharing options...
patrick05 Posted April 11, 2012 Author Share Posted April 11, 2012 'destructive' tsunami have hit Aceh according to CNN Link to comment Share on other sites More sharing options...
MN Transplant Posted April 11, 2012 Share Posted April 11, 2012 Revised to 8.6 per USGS Link to comment Share on other sites More sharing options...
NJwinter23 Posted April 11, 2012 Share Posted April 11, 2012 'destructive' tsunami have hit Aceh according to CNN Not sure where you were getting this from, but here is the latest I've read off the CNN blog 6:18 a.m. ET:) According to Andaman Nicobar islands disaster-management commissioner Punya Salila Srivastava there’s NO report of any tsunami generation along the Indian archipelago so far. “There’s no update. Nothing to say more at the moment,” she said. She told CNN authorities have “downgraded the warning” to an “alert” in Car Nicobar, the northernmost of the Nicobar region. (6:24 a.m. ET:) Indonesia's president says there is no immediate threat of a tsunami from earthquake. He was speaking at a joint press conference in Jakarta with visiting UK Prime Minister David Cameron, ITN's Gary Gibbon tells CNN. (6:30 a.m. ET:) Australian seismologist Gary Gibson tells CNN it is less likely that a tsunami will be generated as the earthquake moved horizontally rather than vertically, as happened in 2004. Link to comment Share on other sites More sharing options...
patrick05 Posted April 11, 2012 Author Share Posted April 11, 2012 Probably false then?? Just posted it here as soon as i heard it on International CNN, hence the quotation marks.. Seems like conflicting reports out there though, a friend from Malaysia told me he heard 3-6m waves on their local TV, while someone from singapore say they've heard 50-80cm waves in Northern Indonesia.. No confirmation obviously... But no tsunami is great news of course Link to comment Share on other sites More sharing options...
ineedsnow Posted April 11, 2012 Share Posted April 11, 2012 just had an 8.2 Link to comment Share on other sites More sharing options...
WeatherX Posted April 11, 2012 Share Posted April 11, 2012 just had an 8.2 USGS Quake Page http://earthquake.us...00090da#summary Link to comment Share on other sites More sharing options...
patrick05 Posted April 11, 2012 Author Share Posted April 11, 2012 Tsunami Warning Center update http://ptwc.weather.gov/ptwc/text.php?id=indian.TSUIOX.2012.04.11.1014 Link to comment Share on other sites More sharing options...
SP Posted April 11, 2012 Share Posted April 11, 2012 I heard something on the news that the energy did not cause a major rise. Perhaps more horizontal than vertical? Either way that is still a big quake to be recorded. That region is hot. Link to comment Share on other sites More sharing options...
NJwinter23 Posted April 11, 2012 Share Posted April 11, 2012 I heard something on the news that the energy did not cause a major rise. Perhaps more horizontal than vertical? Either way that is still a big quake to be recorded. That region is hot. Not sure where you were getting this from, but here is the latest I've read off the CNN blog 6:18 a.m. ET:) According to Andaman Nicobar islands disaster-management commissioner Punya Salila Srivastava there’s NO report of any tsunami generation along the Indian archipelago so far. “There’s no update. Nothing to say more at the moment,” she said. She told CNN authorities have “downgraded the warning” to an “alert” in Car Nicobar, the northernmost of the Nicobar region. (6:24 a.m. ET:) Indonesia's president says there is no immediate threat of a tsunami from earthquake. He was speaking at a joint press conference in Jakarta with visiting UK Prime Minister David Cameron, ITN's Gary Gibbon tells CNN. (6:30 a.m. ET:) Australian seismologist Gary Gibson tells CNN it is less likely that a tsunami will be generated as the earthquake moved horizontally rather than vertically, as happened in 2004. Link to comment Share on other sites More sharing options...
SP Posted April 11, 2012 Share Posted April 11, 2012 That is what they must have been using as a talking point. thanks That after shock was a biggie too!! Link to comment Share on other sites More sharing options...
ChrisM Posted April 11, 2012 Share Posted April 11, 2012 Sounds like the quake was more of a lateral strike slip movement than an upward thrusting movement, so if that's true the tsunami threat should be very minimal. Can't displace much water vertically when you have lateral side to side movement. For those who don't know how tsunamis work, very basically put water is displaced vertically from the earthquake when thrusting occurs vertically (seafloor itself displaced upward) and when that water is pulled back down by gravity it spreads out from the center. The sheer volume and kinetic energy causes the huge speeds going outward. That's why when the earthquake is more side to side the threat is minimal. Link to comment Share on other sites More sharing options...
ChrisM Posted April 11, 2012 Share Posted April 11, 2012 warning lifted apparently, good news. makes sense. Link to comment Share on other sites More sharing options...
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