Equipped To Survive Equipped To Survive® Presents
The Survival Forum
Where do you want to go on ETS?

Page 2 of 3 < 1 2 3 >
Topic Options
#292704 - 07/06/19 04:04 PM Re: Earthquake on the Fourth of July! [Re: hikermor]
Russ Online   content
Geezer

Registered: 06/02/06
Posts: 5208
Loc: SOCAL
A few more details on the recent EQ is available at:
California earthquake: Will the Big One erupt along the San Andreas fault line?
Expect more of the Mag.7 EQ’s, the “Big One” is not expected any time soon.
Quote:
... the USGS believes there is only a two percent chance such an earthquake could occur in the next 30 years.

And the real threat to the San Francisco Bay region in the coming decades comes not from a 1906-type Big One, but from smaller (approximately magnitude 7) earthquakes occurring on segments of the San Andreas fault, called the Hayward fault or Rodgers Creek fault. ...


BTW that USGS website can be configured to extend the time and filter for EQ size. Viewing it at 7 days and Mag 4.5+ clears out all the smaller Mag 2-4 EQ’s and shows you just the recent larger quakes. The Ring of Fire is active.

Top
#292705 - 07/06/19 06:27 PM Re: Earthquake on the Fourth of July! [Re: Russ]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6996
Loc: southern Cal
Fundamentally, EQs are not predictable, although efforts are underway to enhance predictability. If you live in an EQ zone, consider measures that enhance your safety if an EQ occurs, and remember that fires, triggered by EQs often occur in the aftermath.

Basically, the preps that work for an EQ are useful in a good many other emergency situations.
_________________________
Geezer in Chief

Top
#292712 - 07/07/19 06:31 PM Re: Earthquake on the Fourth of July! [Re: hikermor]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6996
Loc: southern Cal
https://enewspaper.latimes.com/desktop/l...0c-236bf740270e

Paper this morning was full of articles discussing "earthquake kits" and measures to take to be ready for the next jolt.

This leaves me in wonderment. If you live in Cali, or are moving here, how is that you don't already know that this locale is known for shaking ground now and then? It is a very good idea to learn of the EQ potential in your area and make preps accordingly.

Most of the advice is quite good and bears repeating.. I especially like the line 'Prepare for at least 72 hours, but two weeks is even better."
_________________________
Geezer in Chief

Top
#292714 - 07/07/19 06:53 PM Re: Earthquake on the Fourth of July! [Re: hikermor]
Russ Online   content
Geezer

Registered: 06/02/06
Posts: 5208
Loc: SOCAL
The Aftermath Of California's Massive Ba... Big One'"

The “Big One” as it’s referred, will be on the San Andreas fault and will supposedly be a Magnitude 9 EQ — 100 times stronger that the Mag.7 in Ridgecrest. From a personal view, that means it will be much stronger and possibly much closer to where I live. It runs from SF down to the Salton Sea, so a lot of California residents will be at risk.

Top
#292715 - 07/07/19 10:10 PM Re: Earthquake on the Fourth of July! [Re: hikermor]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6996
Loc: southern Cal
The article seems really concerned about burglaries during the event, all of two.

Begs the question, how many burglaries would have occurred during a non=EQ Saturday night in Ridgecrest? and so on?

What is theft anyway, vs. scavenging, in a dire emergency? Would one really object if someone took a tourniquet, for instance, without asking, and used it properly, or water, for someone desperately in need? It would be nice to ask first, but that is not always possible....
_________________________
Geezer in Chief

Top
#292719 - 07/08/19 06:15 PM Re: Earthquake on the Fourth of July! [Re: Russ]
Roarmeister Offline
Old Hand

Registered: 09/12/01
Posts: 916
Loc: Saskatchewan, Canada
The hundreds of earthquakes along a fault line are related to what was thought to be from the dormant Coso volcano field north of Ridgecrest. It last erupted 39,000 yrs ago. The shallowness of the earthquakes means there is movement in the magma pool below the surface. It does not mean an eruption is eminent but one is definitely possible. Some people have speculated that it is related to the 4 geothermal plants located nearby.

Apparently, there have been swarms of earthquakes before in this area but this is the first to have 6 and 7 magnitude quakes. The quakes are not generally thought to relate to anything on the San Andrea's fault line but it may trigger other movements in the area. If it is the volcano waking up, Las Vegas would be directly downwind of any ash fallout. Something to keep an eye on but don't lose any sleep over it.

Top
#292721 - 07/08/19 07:16 PM Re: Earthquake on the Fourth of July! [Re: Roarmeister]
Russ Online   content
Geezer

Registered: 06/02/06
Posts: 5208
Loc: SOCAL
Thanks, hadn’t considered volcanic activity; but it is the ring of fire. Regardless of my not feeling Ridgecrest’s Mag 7.1 EQ, the Coso Volcano cooking off will be noticed. The LA basin would not be a good place.

Top
#292728 - 07/09/19 12:23 PM Re: Earthquake on the Fourth of July! [Re: Russ]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6996
Loc: southern Cal
I believe that concern about the Coso volcanic field is not prominent among most seismologists working on this event. Any references?

Movement along the fault is mostly lateral - slip strike.
_________________________
Geezer in Chief

Top
#292729 - 07/09/19 02:54 PM Re: Earthquake on the Fourth of July! [Re: hikermor]
Russ Online   content
Geezer

Registered: 06/02/06
Posts: 5208
Loc: SOCAL
Wikipedia (not the most reliable source) indicates the Coso Volcanic Field was last active 30,000 to 40,000 years ago. It becoming active again would be a big deal outside the desert SW, let alone in SOCAL.

Top
#292731 - 07/09/19 07:37 PM Re: Earthquake on the Fourth of July! [Re: Russ]
AKSAR Offline
Old Hand

Registered: 08/31/11
Posts: 1137
Loc: Alaska
Originally Posted By: Russ
Wikipedia (not the most reliable source) indicates the Coso Volcanic Field was last active 30,000 to 40,000 years ago. It becoming active again would be a big deal outside the desert SW, let alone in SOCAL.
Actually probably not such a big deal, except for the Navy, the geothermal plant, and the other very few people in the immediate area. Any future eruption is likely to produce features similar to those already there: cinder cones, and lava flows extending a few kilometers. If a future eruption includes more silicic lava, a plume of volcanic ash may extend a few tens of kilometers downwind. For more info on the geology, history, and hazards at Coso, see the USGS at: Coso Vocanic Field.

Regarding the relationship between Coso and the recent big earthquake, it is not that unusual for a big quake to trigger small aftershocks at a nearby dormant volcano. This is a very seismicly active area, and no doubt Coso has been jostled numerous times in the 40,000 years since its last well dated eruption. According to the USGS Coso hazards page there is no indication that an eruption is imminent, at the present time.

There is a nice very detailed discussion on Facebook posted at https://www.facebook.com/andy.frassetto/posts/10108643920765392?hc_location=ufi, by someone who actually knows something about Coso and it's geologic context.


Edited by AKSAR (07/09/19 07:50 PM)
_________________________
"Toto, I've a feeling we're not in Kansas any more."
-Dorothy, in The Wizard of Oz

Top
Page 2 of 3 < 1 2 3 >



Moderator:  Alan_Romania, Blast, cliff, Hikin_Jim 
October
Su M Tu W Th F Sa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
Who's Online
5 registered (SRMC, Russ, Alan_Romania, haertig, Janysboy), 52 Guests and 2 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
AppalachianGirl, BereniceStanaway, aakanksha, 9Line, SkiSoloII
5295 Registered Users
Newest Posts
Recon Medical Tourniquets
by chaosmagnet
NYC Knife laws and risks for non-US citizens
by haertig
03:03 AM
Improvise! The need for a Plan B
by Phaedrus
08:42 PM
AM Radio (antennas)
by Russ
04:36 PM
Triangle shaped mat tutorial
by TonyE
04:34 AM
celox and other blood clotting
by Robert_McCall
10/15/19 03:13 AM
Power outages in the Bay Area
by Russ
10/14/19 03:44 PM
Equipped.org Fox 40 Micro Whistles Available
by pforeman
10/14/19 03:05 PM
Newest Images
Tiny knife / wrench
Handmade knives
2"x2" Glass Signal Mirror, Retroreflective Mesh
Trade School Tool Kit
My Pocket Kit
Glossary
Test

WARNING & DISCLAIMER: SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please review the full WARNING & DISCLAIMER about information on this site.