Earthquake
Earthquake
(OP)
== PRELIMINARY EARTHQUAKE REPORT ==
***This event has been revised.
Region: OFFSHORE MAULE, CHILE
Geographic coordinates: 35.846S, 72.718W
Magnitude: 8.8 Mw
Depth: 35 km
Universal Time (UTC): 27 Feb 2010 06:34:14
Time near the Epicenter: 27 Feb 2010 03:34:14
Local standard time in your area: 27 Feb 2010 06:34:14
Location with respect to nearby cities:
104 km (65 miles) WSW (246 degrees) of Talca, Chile
114 km (71 miles) NNE (15 degrees) of Concepcion, Chile
321 km (200 miles) SW (215 degrees) of SANTIAGO, Chile
ADDITIONAL EARTHQUAKE PARAMETERS
________________________________
event ID : US 2010tfan
This event has been reviewed by a seismologist at NEIC
For subsequent updates, maps, and technical information, see:
http://ea rthquake.u sgs.gov/eq center/rec enteqsww/Q uakes/us20 10tfan.php
or
http://earthquake.usgs.gov/
National Earthquake Information Center
U.S. Geological Survey
http://neic.usgs.gov/
***This event has been revised.
Region: OFFSHORE MAULE, CHILE
Geographic coordinates: 35.846S, 72.718W
Magnitude: 8.8 Mw
Depth: 35 km
Universal Time (UTC): 27 Feb 2010 06:34:14
Time near the Epicenter: 27 Feb 2010 03:34:14
Local standard time in your area: 27 Feb 2010 06:34:14
Location with respect to nearby cities:
104 km (65 miles) WSW (246 degrees) of Talca, Chile
114 km (71 miles) NNE (15 degrees) of Concepcion, Chile
321 km (200 miles) SW (215 degrees) of SANTIAGO, Chile
ADDITIONAL EARTHQUAKE PARAMETERS
________________________________
event ID : US 2010tfan
This event has been reviewed by a seismologist at NEIC
For subsequent updates, maps, and technical information, see:
http://ea
or
http://earthquake.usgs.gov/
National Earthquake Information Center
U.S. Geological Survey
http://neic.usgs.gov/






RE: Earthquake
http://news.yahoo.com/s/ap/lt_chile_earthquake
8.8 - that is quite large I believe. very large.
RE: Earthquake
Dik
RE: Earthquake
Preliminary news footage shows various signs of liquefaction. Various buildings seemed to just have tilted on their side or floated to the surface. Entire sections of road have just lifted 3 to 4 feet in the footage I saw. Other damage includes roadway opverpasses and bridges with only the main supports standing.
RE: Earthquake
http://
RE: Earthquake
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Earthquake
I'm not as well versed in the Middle Eastern and or Asian continent countries so I can't say anything about those areas, but India strikes me as a location for huge quakes too.
Here in the central US, there is potential and history but not the same fault characteristics which makes this area a bit of a anomaly.
At any rate, there is a limit to which you can engineer facilities to withstand such monterous earthquakes. That even engineered facilities failed in this quake is likely proof of that statement. Once you combine strength and ductility with good construction practice and details. And once you have a population that is educated on such hazards and post earhquake response what do you do?
I hope the death toll will stay low.
Regards,
![[pipe] pipe](https://www.tipmaster.com/images/pipe.gif)
Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Earthquake
India is relatively low on the probability and strength of seismic activity except for the narrow strip adjacent to the the mountains of Nepal and the far NW corner near Pakistan.
They define the activity categories (details not known) in 5 categories ranging from 1 (least active) and 5 (most active). Most of the country is in a category 1 or 2 with a portion a few category areas and a smattering of category 3. Category 4 areas are small and isolated and the very narrow strip along the northern mountains.
Dick
Engineer and international traveler interested in construction techniques, problems and proper design.
RE: Earthquake
Dik
RE: Earthquake
http:
And I will say it once more:
The width of available support for precast or bridge beams needs be bigger.
RE: Earthquake
Overaqll, no comparison to the construcdtion in Haiti, but with a larger quake, the damage result was the samd, but the loss of live reduced.
Kinda emphasizes our humanitarian and social responsibilities we have as structural engineers. Very sobering.
I, for one, except for the tsunami, expect the same thing in Seattle, and very soon.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Earthquake
RE: Earthquake
Why wouldn't you have the same type tsunami in Seattle?
RE: Earthquake
It may be 30 feet on the coast, but where I am, substantially less - 5 feet or so at best I think. Just my analysis based on living her 61 years ande having seen three other area quakes of 6 or higher.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Earthquake
The background of the news shot was newer 15 story apartment building on the ground. In another shot there were 2 tower cranes still standing over new construction.
It was also stated that very few of the earthquake resistant bridges stood up.
Lets hope some civil people and do a little evaluation as it appears the reconstruction is well underway in some areas.
PS; The day is 1.2 milliseconds shorter due to the quake.
RE: Earthquake
RE: Earthquake
Regards,
![[pipe] pipe](https://www.tipmaster.com/images/pipe.gif)
Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Earthquake
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Earthquake
One note, is that the bridge in picture 18 in the link in Ishvaaag's post (the one in Concepcion)that collapsed has been closed for several years (at least 6). The new bridge (where the picture was taken) seems to have held up fairly well.
"Kinda emphasizes our humanitarian and social responsibilities we have as structural engineers. Very sobering." Mike McCann --- Very well put.
Patrick
RE: Earthquake
Regards,
![[pipe] pipe](https://www.tipmaster.com/images/pipe.gif)
Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Earthquake
http://www.degenkolb.com/blog/page/2/