Re: 1933 presentation
Posted by Canie on May 19, 2009 at 17:36:10:

It's all in a powerpoint presentation - lots of pictures - I don't have a map with the quake pinpointed, but probably could do that now with google earth.. here's the data on it:
March 10, 1933
5:54 PM, PST
Magnitude 6.4Mw
LOCATION: 33° 37' N, 117° 58' W
5 km (3 miles) south of present-day Huntington Beach

Focal mechanism: Right lateral Strike Slip
Depth: 13km
No evidence of surface faulting
Rupture distance 13-16km
Average slip: 85-120 cm
Elevation change: 12-18cm

Damages:
120 Deaths - greatest death toll of any historical southern California earthquake
$50 million damage (1933 figures)
Schools damaged most

Building codes changed due to this quake: Statewide seismic design and construction requirements were mandated for public schools

What is kinda the more interesting part of the presentation is what would happen now if it were to have a repeat..

Damage estimates if there is a repeat of the 1933 quake (a 6.5-7.4):
Buildings $75,000,000,000
Casualties: 20,000-27,000 deaths and injuries
Damage from fire: $2.5 Billion
Hospital functionality one day after quake: 35%
Fire Station functionality: 30%
School functionality: 29%
Displaced households: 137,515
Damaging aftershocks for about 1 month
405, PCH and other Long Beach roads damaged from liquefaction.
110 Freeway possible emergency access route.
130 miles of high traffic roads damaged
350 bridges damaged
Airports out of service – liquefaction, towers down, no access, fuel tank damage
Harbors and ports facilities damaged, seiches
Numerous fires in streets and houses
Fires rage for several days at the refineries in Carson-Wilmington area
Emergency phone service: 25% day 1, 75% day 3, normal use significantly lower.
Power plants shut down for at least 3 days. San Onofre has no damage
Water lines broken – repaired within a week for most areas.
Waste treatment plants at 50% capacity
Main waste water line into Carson treatment plant from Long Beach heavily damaged.
Lack of fresh water and electricity cause sewage spills into soils and streets contaminating groundwater and the coastline.
Thousands of damaged natural gas mains, valves and service connections
Many fuel lines rupture. Fuel lines to power plants rupture.
Fuel spills and toxic emissions.
Worse quake than the Big One on the San Andreas Fault...

Maybe that's why I'm just a bit nrevous - one cat was finally getting back to normal and now he's hiding in a corner of his house..

Canie


Follow Ups:
     ● Re: 1933 presentation - heartland chris  08:42:22 - 5/20/2009  (75318)  (1)
        ● Re: 1933 presentation - Canie  10:03:45 - 5/20/2009  (75319)  (0)
     ● Re: 1933 presentation - Cathryn   21:06:56 - 5/19/2009  (75315)  (1)
        ● Re: 1933 presentation - Canie  23:50:45 - 5/19/2009  (75316)  (0)