• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

Temblors

Munjibunga ... knows all, sees all. We were having Easter dinner at my in-laws, and it shook for over 30 seconds. I immediately knew it was big (by the duration) and far away (by the lack of damage and the time separation between the first arrivals of the P and S waves). My first guess was M6.5 to M7.0.

Nice call! We were just sitting down to eat as well in SD. Happen right after the prayer! Hope I didn't say something to offend Him.
 
Yeah, the complete lack of violent shaking was a giveaway to the distance. They've since upgraded it to a 7.2! [Invalid or Expired Link Removed]

I was camped about 40-miles from the epicenter of the 1999 Hector Mine (7.1) earthquake. That was VIOLENT...and the rollers were everlasting!
 
Yeah, the complete lack of violent shaking was a giveaway to the distance. They've since upgraded it to a 7.2! [Invalid or Expired Link Removed]

I was camped about 40-miles from the epicenter of the 1999 Hector Mine (7.1) earthquake. That was VIOLENT...and the rollers were everlasting!

It's wild when you see them outdoors. I was 12 miles from the epicenter of the 1989 Loma Prieta earthquake, and saw ground waves going across the parking lot. That was violent ... I almost fell down.
 
What the hell is a "temblor" it sounds really lame.

Oh yeah sorry about today's earthquake, that was me turning up the metal too loud. :eek:

New one on me, too... but it makes sense...

Compact Oxford English Dictionary

temblor

• noun US - an earthquake. — ORIGIN - American Spanish.

Putting "temblor" into Google Translate from Spanish to English gets us...



Tremor!

BTW... "Too Loud" & "Metal" are mutually exclusive terms. :ninja:
 
I was in Ocotillo Wells until about 2. My friends that were still in the desert felt it a little stronger.

My wife and I were sitting under a mounted deer and some neon beer signs at the Hamburger Factory (Poway) and I wasn't in the mood to get skewered, so we and others moved out of the of shaking wall adornments. Much bigger second wave than the first. That was a long one.
 
I was in Ocotillo Wells until about 2. My friends that were still in the desert felt it a little stronger.

My wife and I were sitting under a mounted deer and some neon beer signs at the Hamburger Factory (Poway) and I wasn't in the mood to get skewered, so we and others moved out of the of shaking wall adornments. Much bigger second wave than the first. That was a long one.

Small world. I was at my brother's house in Poway this morning. We drove right down Midland and, as we passed the Hamburger Factory, my daughter said, "Oh! I want to go there again." They do have a decent chiliburger.

Also, the reason you felt two waves is that the first waves were the P-waves (primary, or compression waves) that travel faster than the S-waves (secondary, or shear waves). The P-waves are usually much less damaging than the S-waves. You can get an idea of the distance to the epicenter by the amount of time between the arrivals of the P-waves and S-waves. P-waves tend to go bump-bump-bump-bump, while S-waves have a more swaying mothion.

As a side note, every year I give a lecture about earthquakes and seismicity to all the 6th-grade classes at my daughter's school. This year, she's a 6th-grader, and was in one of the classes I taught. That was just last Tuesday and Thursday. None of the kids are old enough ever to have felt an earthquake, so this one was their first. I'd sure like to go back and follow up to see how they all reacted. In fact, I will see them again when I go back to help them with their Knex earthquake-resistant structure design. They all build structures out of Knex, and then take them to the shake table at UCSD to see how they hold up.
 
seismic_waves.png
 
In spanish we use "terremoto" for earthquacke and "temblor" for softer ones, how do you call those in english? tremors?

"Earthquake" is used whether it's big or small. The media uses "temblor" but they're basically the only ones. "Tremors" describe shaking of any kind, whether it affects the earth, the body, or Jello-brand gelatin. :)

Incidentally, the "Temblor Range" is a small mountain range in California which was formed primarily through tectonic activity. http://en.wikipedia.org/wiki/Temblor_Range
 
Munji, you make a good case for the southern San Andreas. In one of my lifetimes, I worked for SoCal Earthquake Preparedness Program (SCEPP) forecasting death and destruction through ground shaking modeling. We couldn't kill enough people to make our bosses happy until we finally isolated the LA basin by knocking out the I-5, I-10/15 and SR 101, created a firestorm (Santa Ana's) and for then had San Onofre go China Syndrome. Ah, the good old days....