NickDG 23 #1 March 16, 2010 Two good jolts here in California! Big enough it woke us up here (right outside LA) at 4:AM . . . Coffee's on! NickD Quote Share this post Link to post Share on other sites piisfish 140 #2 March 16, 2010 Quote Two good jolts here in California! Big enough it woke us up here (right outside LA) at 4:AM . . . Coffee's on! NickD well now you're up, go back to painting Nina Hope everything is OK and there are no big damages/hurt people with the quakes.scissors beat paper, paper beat rock, rock beat wingsuit - KarlM Quote Share this post Link to post Share on other sites NickDG 23 #3 March 16, 2010 Cal Tech is calling it a 4.4 and it hit at 4:04 AM on the Whittier Fault in Pico Rivera. Our house shook for a good 15 seconds (after I woke up) accompanied with a rumbling sound. No reports of damage yet. But News reports are saying it was felt all over Southern California. The Whittier fault (part of the Elsinore Fault) had a 5.9 earthquake back in 1987 that I still remember well . . . NickD Quote Share this post Link to post Share on other sites NickDG 23 #4 March 16, 2010 The 5 Freeway suffered some damage. Cal Trans says there's a pretty large gap that opened up on the roadway in Downy. A good reminder to be careful driving after an earthquake. NickD Quote Share this post Link to post Share on other sites skyrider 0 #5 March 16, 2010 San Diego was hit 2 days ago, a very slow rolling shaker, It felt like a wave going threw my house, we had enough time from hearing it, to look at each other an say, Is that an earthquake, then it hit the house..a 4.0 Quote Share this post Link to post Share on other sites skyrider 0 #6 March 16, 2010 http://quake.usgs.gov/recenteqs/Maps/118-34.html http://earthquake.usgs.gov/earthquakes/ Quote Share this post Link to post Share on other sites Jbag 0 #7 March 16, 2010 DAMMIT! i never get to feel them :(. last one i was in i was packing my canopy at elsinore and the ground shook, i thouht it was my hangover til i asked other people, i wanna feel one!IHYD Quote Share this post Link to post Share on other sites skyrider 0 #8 March 16, 2010 QuoteDAMMIT! i never get to feel them :(. last one i was in i was packing my canopy at elsinore and the ground shook, i thouht it was my hangover til i asked other people, i wanna feel one! Judging by all the activity lately...you will probably get your wish soon! Quote Share this post Link to post Share on other sites LisaH 0 #9 March 16, 2010 Felt it in Elsinore.Be yourself! MooOOooOoo Quote Share this post Link to post Share on other sites skyrider 0 #10 March 16, 2010 two little rockers in LA and san diego, may only be early warnings! Quote Share this post Link to post Share on other sites Brains 2 #11 March 16, 2010 Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. Never look down on someone, unless they are going down on you. Quote Share this post Link to post Share on other sites skyrider 0 #12 March 16, 2010 Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. San Diego's happened Sat abotu 9:20...This city is design pretty much for shakers, don't let it bother you , unless you are staying in a High rise... Quote Share this post Link to post Share on other sites Brains 2 #13 March 17, 2010 Quote Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. San Diego's happened Sat abotu 9:20...This city is design pretty much for shakers, don't let it bother you , unless you are staying in a High rise... only HERE Never look down on someone, unless they are going down on you. Quote Share this post Link to post Share on other sites champu 1 #14 March 17, 2010 I woke up just before 4 for no apparent reason so I was awake already. Down here in the beach cities it was a "bump... ...rumblerumblerumble" and that was it. At the time I thought it was about a 3.5 that was close by. Quote Share this post Link to post Share on other sites LisaH 0 #15 March 17, 2010 Yes, it was a bump. Shook the bunkhouse though. Thought someone slammed a door.Be yourself! MooOOooOoo Quote Share this post Link to post Share on other sites ltdiver 3 #16 March 17, 2010 Quote But News reports are saying it was felt all over Southern California. Didn't feel it at all here in San Bernardino. Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites Amazon 7 #17 March 17, 2010 Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. Uh Dahrlin..... it is not a linear scale 4.4 to 8.8....aint twice as strong. http://www.geology.wisc.edu/courses/g115/quake/richter.html Magnitude vs Intensity Richter Magnitude: Most people have heard of the Richter Scale for measuring the 'size' or 'strength' of an earthquake. This scale is quantitative and based on the amount of energy released by an earthquake. The inferred energy of a quake is a function of both the amplitude and the duration of a single wave. The seismogram below shows waves with a wide range of amplitude (up to +/- 350) and duration (the first big wave cycle - up, down, back to zero - started just after 8 minutes on the chart and ended nearly 40 seconds later; other waves lasted only seconds). So when you do all the math, here is what you get. One unit on the Richter Magnitude Scale corresponds to a tenfold increase or decrease in the amplitude of the wave on the seismogram - 350 in this example would become either 3500 or 35! This change, when summed over all the wavelengths and wave types, translates to a 30 times increase in energy. So a seismograph (the instrument) that recorded a 1 cm deflection on a seismogram (the tracing) for a magnitude 5 earthquake would show a 100 cm deflection for a magnitude 7 quake that released 30x30 = 900 times as much energy. You do the math for a magnitude 8 quake! To make these measurements you need to use a calibrated instrument that is located 100 km from the quake epicenter (or make corrections to data gathered at other distances). -------------------------------------------------------------------------------- Mercalli Intensity: The Modified Mercalli Intensity Scale is a qualitative assessment of the kinds of damage done by an earthquake. To avoid confusion with the Richter Magnitude scale, the Mercalli scale is reported using Roman Numerals on a scale from I to XII. For example: I: Not felt except by a very few people under very special circumstances. V: Felt by nearly everyone, people awakened, some windows and dishes broken, some tall objects disturbed. VIII: Damage slight in specially designed structures, considerable damage in normal buildings with partial collapse, heavy furniture overturned. XII: Total destruction of man-made structures, waves seen on the ground, objects thrown in the air. Quote Share this post Link to post Share on other sites ZigZagMarquis 9 #18 March 17, 2010 Quote Two good jolts here in California! Big enough it woke us up here (right outside LA) at 4:AM . . . Coffee's on! NickD Really!??? Didn't feel a thing up here in the desert. Was dead to the world at 0400 this morning... Quote Share this post Link to post Share on other sites skyrider 0 #19 March 17, 2010 Quote Quote Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. San Diego's happened Sat abotu 9:20...This city is design pretty much for shakers, don't let it bother you , unless you are staying in a High rise... only HERE Be afraid...be very afraid... Quote Share this post Link to post Share on other sites champu 1 #20 March 17, 2010 Interestingly... The Richter Scale is the only system I'm familiar with that actually uses bels as a system of logarithmic measurement (as opposed to decibels or dB used virtually everywhere else) Bottom line is that an increase of 0.3 on the Richter Scale translates to an earthquake of twice the energy. (note: this is not the same as saying twice the amplitude.) /edit: changed "Bels" to "bels" because units of measure aren't capitalized when spelled out, only when abbreviated and originating from a proper name. ...I'm a fucking blast at parties. Quote Share this post Link to post Share on other sites skyrider 0 #21 March 17, 2010 Quote Interestingly... The Richter Scale is the only system I'm familiar with that actually uses Bels as a system of logarithmic measurement (as opposed to decibels or dB used virtually everywhere else) Bottom line is that an increase of 0.3 on the Richter Scale translates to an earthquake of twice the energy. (note: this is not the same as saying twice the amplitude.) Fuck all that sciencey bullshit, I simply run out back to see how big the waves are in my pool! that 4.0 only made 8 inch waves... Quote Share this post Link to post Share on other sites Join the conversation You can post now and register later. If you have an account, sign in now to post with your account. Note: Your post will require moderator approval before it will be visible. Reply to this topic... × Pasted as rich text. Paste as plain text instead Only 75 emoji are allowed. × Your link has been automatically embedded. Display as a link instead × Your previous content has been restored. Clear editor × You cannot paste images directly. 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piisfish 140 #2 March 16, 2010 Quote Two good jolts here in California! Big enough it woke us up here (right outside LA) at 4:AM . . . Coffee's on! NickD well now you're up, go back to painting Nina Hope everything is OK and there are no big damages/hurt people with the quakes.scissors beat paper, paper beat rock, rock beat wingsuit - KarlM Quote Share this post Link to post Share on other sites
NickDG 23 #3 March 16, 2010 Cal Tech is calling it a 4.4 and it hit at 4:04 AM on the Whittier Fault in Pico Rivera. Our house shook for a good 15 seconds (after I woke up) accompanied with a rumbling sound. No reports of damage yet. But News reports are saying it was felt all over Southern California. The Whittier fault (part of the Elsinore Fault) had a 5.9 earthquake back in 1987 that I still remember well . . . NickD Quote Share this post Link to post Share on other sites
NickDG 23 #4 March 16, 2010 The 5 Freeway suffered some damage. Cal Trans says there's a pretty large gap that opened up on the roadway in Downy. A good reminder to be careful driving after an earthquake. NickD Quote Share this post Link to post Share on other sites
skyrider 0 #5 March 16, 2010 San Diego was hit 2 days ago, a very slow rolling shaker, It felt like a wave going threw my house, we had enough time from hearing it, to look at each other an say, Is that an earthquake, then it hit the house..a 4.0 Quote Share this post Link to post Share on other sites
skyrider 0 #6 March 16, 2010 http://quake.usgs.gov/recenteqs/Maps/118-34.html http://earthquake.usgs.gov/earthquakes/ Quote Share this post Link to post Share on other sites
Jbag 0 #7 March 16, 2010 DAMMIT! i never get to feel them :(. last one i was in i was packing my canopy at elsinore and the ground shook, i thouht it was my hangover til i asked other people, i wanna feel one!IHYD Quote Share this post Link to post Share on other sites
skyrider 0 #8 March 16, 2010 QuoteDAMMIT! i never get to feel them :(. last one i was in i was packing my canopy at elsinore and the ground shook, i thouht it was my hangover til i asked other people, i wanna feel one! Judging by all the activity lately...you will probably get your wish soon! Quote Share this post Link to post Share on other sites
LisaH 0 #9 March 16, 2010 Felt it in Elsinore.Be yourself! MooOOooOoo Quote Share this post Link to post Share on other sites
skyrider 0 #10 March 16, 2010 two little rockers in LA and san diego, may only be early warnings! Quote Share this post Link to post Share on other sites
Brains 2 #11 March 16, 2010 Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. Never look down on someone, unless they are going down on you. Quote Share this post Link to post Share on other sites
skyrider 0 #12 March 16, 2010 Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. San Diego's happened Sat abotu 9:20...This city is design pretty much for shakers, don't let it bother you , unless you are staying in a High rise... Quote Share this post Link to post Share on other sites
Brains 2 #13 March 17, 2010 Quote Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. San Diego's happened Sat abotu 9:20...This city is design pretty much for shakers, don't let it bother you , unless you are staying in a High rise... only HERE Never look down on someone, unless they are going down on you. Quote Share this post Link to post Share on other sites
champu 1 #14 March 17, 2010 I woke up just before 4 for no apparent reason so I was awake already. Down here in the beach cities it was a "bump... ...rumblerumblerumble" and that was it. At the time I thought it was about a 3.5 that was close by. Quote Share this post Link to post Share on other sites
LisaH 0 #15 March 17, 2010 Yes, it was a bump. Shook the bunkhouse though. Thought someone slammed a door.Be yourself! MooOOooOoo Quote Share this post Link to post Share on other sites
ltdiver 3 #16 March 17, 2010 Quote But News reports are saying it was felt all over Southern California. Didn't feel it at all here in San Bernardino. Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites
Amazon 7 #17 March 17, 2010 Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. Uh Dahrlin..... it is not a linear scale 4.4 to 8.8....aint twice as strong. http://www.geology.wisc.edu/courses/g115/quake/richter.html Magnitude vs Intensity Richter Magnitude: Most people have heard of the Richter Scale for measuring the 'size' or 'strength' of an earthquake. This scale is quantitative and based on the amount of energy released by an earthquake. The inferred energy of a quake is a function of both the amplitude and the duration of a single wave. The seismogram below shows waves with a wide range of amplitude (up to +/- 350) and duration (the first big wave cycle - up, down, back to zero - started just after 8 minutes on the chart and ended nearly 40 seconds later; other waves lasted only seconds). So when you do all the math, here is what you get. One unit on the Richter Magnitude Scale corresponds to a tenfold increase or decrease in the amplitude of the wave on the seismogram - 350 in this example would become either 3500 or 35! This change, when summed over all the wavelengths and wave types, translates to a 30 times increase in energy. So a seismograph (the instrument) that recorded a 1 cm deflection on a seismogram (the tracing) for a magnitude 5 earthquake would show a 100 cm deflection for a magnitude 7 quake that released 30x30 = 900 times as much energy. You do the math for a magnitude 8 quake! To make these measurements you need to use a calibrated instrument that is located 100 km from the quake epicenter (or make corrections to data gathered at other distances). -------------------------------------------------------------------------------- Mercalli Intensity: The Modified Mercalli Intensity Scale is a qualitative assessment of the kinds of damage done by an earthquake. To avoid confusion with the Richter Magnitude scale, the Mercalli scale is reported using Roman Numerals on a scale from I to XII. For example: I: Not felt except by a very few people under very special circumstances. V: Felt by nearly everyone, people awakened, some windows and dishes broken, some tall objects disturbed. VIII: Damage slight in specially designed structures, considerable damage in normal buildings with partial collapse, heavy furniture overturned. XII: Total destruction of man-made structures, waves seen on the ground, objects thrown in the air. Quote Share this post Link to post Share on other sites
ZigZagMarquis 9 #18 March 17, 2010 Quote Two good jolts here in California! Big enough it woke us up here (right outside LA) at 4:AM . . . Coffee's on! NickD Really!??? Didn't feel a thing up here in the desert. Was dead to the world at 0400 this morning... Quote Share this post Link to post Share on other sites
skyrider 0 #19 March 17, 2010 Quote Quote Quote Anybody feel anything down in San Diego? My father and I are supposed to head out there tomorrow and he is real nervous about it. I told him it was only half of the one he was in in Santiago last month He didn't laugh. San Diego's happened Sat abotu 9:20...This city is design pretty much for shakers, don't let it bother you , unless you are staying in a High rise... only HERE Be afraid...be very afraid... Quote Share this post Link to post Share on other sites
champu 1 #20 March 17, 2010 Interestingly... The Richter Scale is the only system I'm familiar with that actually uses bels as a system of logarithmic measurement (as opposed to decibels or dB used virtually everywhere else) Bottom line is that an increase of 0.3 on the Richter Scale translates to an earthquake of twice the energy. (note: this is not the same as saying twice the amplitude.) /edit: changed "Bels" to "bels" because units of measure aren't capitalized when spelled out, only when abbreviated and originating from a proper name. ...I'm a fucking blast at parties. Quote Share this post Link to post Share on other sites
skyrider 0 #21 March 17, 2010 Quote Interestingly... The Richter Scale is the only system I'm familiar with that actually uses Bels as a system of logarithmic measurement (as opposed to decibels or dB used virtually everywhere else) Bottom line is that an increase of 0.3 on the Richter Scale translates to an earthquake of twice the energy. (note: this is not the same as saying twice the amplitude.) Fuck all that sciencey bullshit, I simply run out back to see how big the waves are in my pool! that 4.0 only made 8 inch waves... Quote Share this post Link to post Share on other sites
