Sunday, February 28, 2010

NERVS update

Hi All,

The last NERVS update was accurate, with a 4.0 quake occurring in
Central California within the right time frame and magnitude. Two
additional large quakes have happened as well: a 7.0 in the Ryukyu
islands (Japan) and the 8.8 in Chile. These areas are both within well-
established NERVS vectors, and their magnitude alone yields this next
update. However, quakes in Crete and Hindu Kush (Afghanistan) are also
vectors, and quakes there may give additional likelihood to a
California quake, which yields the following NERVS update:

4.5 or greater magnitude quake in next ten days:
- Primary vector: Central California, Northern California, Southern
California, Oregon, Aleutian Islands, central Australia, offshore
central Japan, Kazakhstan
- Secondary vector: central China, Washington state, Canada, Alaska,
New Britain, PNG
- Also possible: based on 8.8 magnitude quake, another large quake is
possible anywhere worldwide

At a later time (when I'm not typing on my iPhone) I'll also resend
the 7.0+ quake timeline, which shows the high incidence of large
magnitude quakes over the last few months. As you may recall, another
9.0 or greater seemed feasible in the near term. While the 8.8 is
close, more analysis is needed to suggest whether the Chile quake is
the resolution of that possibility, or whether another significant
event is likely in the near term.

Thank you for participating in this experiment.

Sent from my iPhone

Sunday, February 21, 2010

NERVS update

Hi All, 

Quakes in Tonga, Myanmar and Iran yield the following NERVS update:

4.0 or greater magnitude quake in next 10 days:
- Primary vector: Oregon, Northern California, Southern California (including Baja), Central California
- Secondary vector: Washington, Nevada, Turkey, Afghanistan
- Also possible: Iceland, New Zealand, Costa Rica

-----

NERVS Accuracy Check

...will be completed at a later time


-----

For those new to the list, NERVS stands for:
Numerical (or "non-scientific")
Earthquake
Risk
Vector
System
...and is based on prior California quakes being preceded by similar patterns of quakes in other areas. 

-----


Thank you for participating in this experiment. Please reply by email to let me know if you'd like to add persons or be removed from this list.

Nate


----
Nate Myers
nmyers@apple.com    408-974-9207    Apple Inc.




Monday, February 8, 2010

NERVS update

Hi All, 

The previous NERVS update was somewhat close, with two California quakes occurring within ten days of the expiration date. So while it's possible that the latest activity is actually a post-California pattern, there's enough of a setup to warrant another update. Thus, quakes in Tonga, Fiji, Taiwan and Oaxaca, Mexico yield the following NERVS update:

4.5 or greater magnitude quake in next 10 days:
- Primary vector: Oregon, Northern California, Southern California (including Baja), Central California, Alaska
- Secondary vector: Washington, Nevada, Myanmar, Turkey, Hindu Kush (Afghanistan)
- Also possible: Iceland, India, China

-----

NERVS Accuracy Check

...will be completed at a later time


-----

For those new to the list, NERVS stands for:
Numerical (or "non-scientific")
Earthquake
Risk
Vector
System
...and is based on prior California quakes being preceded by similar patterns of quakes in other areas. 

-----

Haiti Damage Shows Importance of a Plan and Preparation
This still unfolding disaster clearly illustrates the need for proactive steps. CNN/Time has an interactive chart showing the largest and deadliest quakes in the last 100 years. See it here:

-----

Obtaining Drinking Water from your Water Heater 
Damaged or broken supply pipes, compromised treatment facilities or loss of pressure could make obtaining clean water a top priority after a major quake. Don't forget about your water heater—it's a great resource for gallons of usable water. Keeping the water inside is one reason to brace it. 

A spigot or other outflow device should be present on the bottom of your gas or electric water heater.  Examine the top as well—you may have faucet handles or other shut-off valves to limit inflow of contaminated water. Remember that multiple strong aftershocks can continue after the initial quake, so make sure the gas is off before spending much time in front of your water heater, and avoid any ignition source until you're sure residual gas has had time to clear. More: http://www.earthquakecountry.info/daretoprepare/stuff/waterheater.html


-----

Your fault? 
If buying a home in the Bay Area, you may also be buying increased risk. Your disclosure packet should contain an assessment of earthquake risk based on your home's proximity to known faults. The Association of Bay Area Governments (ABAG) uses the Modified Mercalli Intensity scale to rate estimated quake damage. See a description here: http://www.abag.ca.gov/bayarea/eqmaps/doc/mmi.html

-----

What California emergency services are available before and after a large event? See the California Emergency Management Agency's plan. http://www.oes.ca.gov/WebPage/oeswebsite.nsf/Content/A1F2F25F0947AF848825741F006015EF?OpenDocument

-----

An SF earthquakes service is available on Twitter. Thanks to NERVS member Dan for the resource. http://twitter.com/sfearthquakes

And if Google is more your style, here's a new way to search for quakes. Thanks to NERVS member Mark for the resource. http://googleblog.blogspot.com/2009/03/shaking-up-earthquake-searches.html

-----

If you live in the Bay Area, don't miss the USGS simulation of a 6.8, 7.0 or 7.2 quake on the Hayward and Rodgers Creek faults. 
When you get to the page, click on the images to yield the animated versions. Also available in HD.

Get an earthquake education from UC Berkeley for free! Available from iTunes U, "Earthquakes In Your Backyard" covers many interesting physical and social aspects of geologic science. Check out iTunes for more:

For preparedness and response information, see:

Earthquakes in the Bay Area may cause dam or soil failure. Are you at risk in a flood or liquefaction zone? Check and see:
Note: When you see the map, choose the Zoom In tool. Then just click and drag to magnify your area of interest.

What could happen in a typical office during a quake? See the simulation:

What would happen to homes if a 6.7 temblor occurred in the Bay Area? The Structural Engineering and Earthquake Simulation Laboratory (SEESL) provides these room-by-room videos in this simulation:
Archived Test Videos

When is an uplifting experience a bad thing? When it's caused by bulging magma in the United States' largest volcano. If your travel plans are taking you to Yellowstone in the near future, first check the Yellowstone Volcano Observatory alerts and updates: 

Just how large is the Yellowstone caldera? View the Google map provided by NERVS list member Caleb Tonn:




Thank you for participating in this experiment. Please reply by email to let me know if you'd like to add persons or be removed from this list.

Nate