Earthquake Definition and 171 Threads

So either we can now predict earthquakes or this news site has lost the plot...https://www.dailystar.co.uk/news/latest-news/685618/earthquake-jakarta-tonight-indonesia-megathrust-2004-tsunami

Hi everyone A M 7.2 quake in southern Mexico today M 7.2 - 37km NE of Pinotepa de Don Luis, Mexico Time: 2018-02-16 23:39:42 (UTC) Location: 16.646°N 97.653°W Depth: 24.7 km from my system It also shows a M 5.8 aftershock in the tail of the main shock location map cheers Dave

A fluid situation at the moment, as the news rolls in - https://www.stuff.co.nz/world/asia/101213618/taiwan-earthquake-topples-buildings Significant damage. EDIT: added later https://www.stuff.co.nz/world/asia/101213618/taiwan-earthquake-topples-buildings One hotel partially collapsed with...

http://www.foxnews.com/us/2017/07/06/montana-earthquake-5-8-magnitude-earthquake-felt-in-region.html

Some Japanese scientists want to drill from the bottom of S. African mines into faults of recent earthquakes. Science news story here.

http://www.stuff.co.nz/the-press/news/christchurch-earthquake-2011/89668972/before-during-and-after-see-how-christchurch-has-changed Today we remember those who were lost. I was taking a nap at the time, but when I woke up and saw the headlines, I ran to the TV to watch the coverage...

How can you tell where a dispersed Rayleigh wave train ends...? Is there a way to identify the end of a Rayleigh wave train on the following teleseismic records? The first shows the full surface wave train, the second is zoomed in but cuts off the final part of the original including the last...

Hello PF Why are scientists still unable to predict earthquake? Will it be possible to predict earthquake? Are there any promising research going on? If only we could know when earthquake was going to hit, how many lives could have been saved!

Hello. I am doing a review sheet for my Pre-Calculus final and one of the questions has me stumped. I'm going through our notes and we never did a problem like this in class. Any help would be greatly appreciated. Thank you. Find the Richter scale magnitude of an earthquake that releases energy...

They set a tsunami warning. Seems to be several. http://geofon.gfz-potsdam.de/eqinfo/seismon/globmon.php http://earthquake.usgs.gov/earthquakes/eventpage/us20007z8m#region-info

Quite recent, so updates will follow. Over the radio in NZ, it is said a tsunami warning has been issued. Magnitude 7.3 at the moment, possibly be revised. http://www.stuff.co.nz/world/asia/86723022/big-earthquake-near-japan

I know we have members who watch earthquakes and especially in that region. http://www.bbc.com/news/world-asia-37967178 Potsdam and CNN even report 7.8 in 10 km depth. Tsunami warning set. Does anybody know more?

Oklahoma has been experiencing numerous small earthquakes (Mag 3-4 range) in recent years. A Mag 5.6 earthquake in Pawnee, Oklahoma happened this morning. http://earthquaketrack.com/us-ok-broken-arrow/recent 2016-09-03 12:02:44 UTC 36.429°N 96.923°W 6.6 km depth That's somewhat unusual...

M6.8 - 25km W of Chauk, Burma 2016-08-24 10:34:55 UTC 20.919°N 94.579°E 84.1 km depth http://earthquake.usgs.gov/earthquakes/eventpage/us10006gbf#executive Fairly deep though, but still pretty strong. @davenn, did you get a signature?

USGS reports a Mag 6.2 earthquake near Norcia, Italy. http://earthquake.usgs.gov/earthquakes/eventpage/us10006g7d#executive http://earthquake.usgs.gov/earthquakes/eventpage/us10006g7d#region-info https://www.yahoo.com/news/magnitude-6-4-quake-hits-italy-near-perugia-015222205.html There were a...

San Francisco and Southern California is south of the Cascade region. USGS has issued an Outlook for the region. https://pubs.er.usgs.gov/publication/fs20163020 It relates to the San Andreas Fault and related faults down through southern California into Baja California in Mexico...

Hello PF This seems to be the biggest threat for my country. http://m.phys.org/news/2016-07-giant-quake-lurk-bangladesh.html Could you please review and tell how much possibility is there for that earthquake to happpen?

Homework Statement Here is the seismogram in question: http://postimg.org/image/iu0dozetn/ There are many parts to this question, but I only need help with this one: Measure the S wave arrival time. Homework Equations NA 3. Attempts at a Solution I know that the P waves arrive at 40...

5.2-Magnitude Earthquake Rattles Southern California, Felt in Los Angeles, San Diego https://gma.yahoo.com/5-2-magnitude-earthquake-rattles-southern-california-felt-112449426--abc-news-topstories.html M5.2 - 20km NNW of Borrego Springs, CA...

Hi guys and gals The Australian doesn't get too may quakes M5 and up. On average one every approx. 4-5 years The latest occurred this morning, 04:14:02 EST, 21st May ( local time) recorded as a M 6.1 by Geoscience Australia ( GA is the Australian Govt. Institute for monitoring such activity...

Homework Statement The question is featured in the image below. I know the methods to calculate modal mass, stiffness etc, I'm just not too sure how to model both the distributed and lumped masses together. Homework Equations Modal Mass, M* = ∫m.φ^2(x) dx The Attempt at a Solution Say for...

http://www.stuff.co.nz/world/americas/79010630/73-quake-hits-near-ecuador

http://www.stuff.co.nz/world/asia/78950651/strong-quakes-hit-southern-japan-nuclear-plants-safe-dozens-injured

There is some discrepancy on the magnitude. USGS reports - M4.8 - 12km WNW of Masterton, New Zealand http://earthquake.usgs.gov/earthquakes/eventpage/us20005h22#general 2016-04-11 19:41:06 (UTC) Location: Lat 40.932°S, Long 175.514°E Depth: 27.1 km (16.9 mi) - shallow. Folks in the vicinity...

Earthquake strikes remote region of Alaska http://www.cnn.com/2016/04/02/americas/alaska-earthquake/index.html M6.2 - 100km NNE of Chignik Lake, Alaska (Near Jaw Mountain) http://earthquake.usgs.gov/earthquakes/eventpage/ak13226799#general_region A swarm is also associated with this event...

The matter of large tsunamis come up in another thread on thermonuclear explosions. Very large earthquakes Mag 8 and greater, produce energies well above the largest manmade thermonuclear detonation. They can also create large tsunamis. The 1964 earthquake produced large tsunamis in Alaska...

I am doing business with a Japanese partner to help japanese people to remain safe during earthquakes which require building a small metallic shelter in their homes, it should stand the destruction during an earthquake. My question, what metal is the right choice? :oldconfused: It must have...

http://www.stuff.co.nz/national/76868658/live-57-earthquake-hits-christchurch Not Christchurch again. :( http://www.geonet.org.nz/quakes/region/newzealand/2016p118944

http://news.yahoo.com/6-4-magnitude-earthquake-strikes-southern-taiwan-210602384.html Nearest major cities are Tainan and Kaohsiung. http://earthquake.usgs.gov/earthquakes/eventpage/us20004y6h#general_region Time: 2016-02-05 19:57:27 (UTC) Distance from major cities: 28km (17mi) NE of...

http://news.yahoo.com/federal-agency-magnitude-6-4-earthquake-hit-southern-110243052.html USGS reports 7.1 http://earthquake.usgs.gov/earthquakes/eventpage/us10004gqp#general_summary Time 2016-01-24 10:30:30 UTC Location 59.659°N 153.452°W Depth 127.8 km - fairly deep though

In my story about a planet called Kepler Bb(B flat like in music). It has 4 moons and orbits around a double binary star. In the 11th chapter I have an whole sequence of earthquakes in the same area that lasts for hours. Then after the earthquakes stop somebody checks the fault line and it is...

Strong 7.0-magnitude quake hits off Japan coast: USGS http://news.yahoo.com/strong-7-0-magnitude-quake-hits-off-japan-211816995.html USGS apparently reports 6.7 Mag http://earthquake.usgs.gov/earthquakes/eventpage/us10003y71#general_summary M6.7 - 144km WSW of Makurazaki, Japan 2015-11-13...

Can someone please solve this . I have been trying to solve this from last 2 days. 1. Question An earthquake with a magnitude of 5.4 is 39 times as intense as an aftershock that occurs five hours later. What is the magnitude of the aftershock? Round your answer to one decimal place. 2. Formula...

The New Yorker magazine of 20 July 2015 had an interesting article about the "Cascadia" subduction zone along the coast of N.Calif, Oregon, Washington, Br.Columbia http://www.newyorker.com/magazine/2015/07/20/the-really-big-one I looked up some background. Wikipedia seemed quite informative. A...

Can some name easy understanding book related to earthquakes, seismic analysis so that non civil engineer or geologist etc can understand can this topic and seismic analysis basics.

Barely 2 weeks after the 7.8 magnitude earthquake which killed nearly 8000 people and injured more than 17,800 ,Nepal was struck by another 7.3 magnitude earthquake on May 12 local time 12:35 pm. Once again in the middle of the day, people were rambling out on the streets of the nation's capital...

http://www.stuff.co.nz/world/south-pacific/68291285/75magnitude-earthquake-hits-papua-new-guinea

In the Earth forum, there is a thread about the Nepal earthquakes which started with a mag 7.8 earthquake. This thread is about the human impact. More than 2,200 confirmed dead in Nepal earthquake http://news.yahoo.com/aid-starts-coming-nepal-quake-kills-nearly-2-050207892.html International...

This is the latest update from the USGS and affiliated institutions for California, USA, for the next 30 years.. see more at ... http://www.usgs.gov/newsroom/article.asp?ID=4146&from=rss&utm_source=dlvr.it&utm_medium=facebook#.VRUfzU3EDxH cheers Dave

http://news.yahoo.com/strong-earthquake-shakes-southwestern-china-142617683.html http://earthquake.usgs.gov/earthquakes/eventpage/usb000sjim#summary

Hi, I found a great generator, Earthquake 800 watt inverter style that is quiet and runs 14 hours on a gallon. BUT the Bosch SDS drill kills the engine, even if you barely pull the trigger. https://www.amazon.com/dp/B00FL89I2W/?tag=pfamazon01-20 I have a 750 watt inverter I hook up to 12V...

I came across an interesting video on three massive earthquakes and the thrusts that caused tsunamis. Just because an earthquake is large, i.e., mag 7 or mag 8 or greater, and in the ocean doesn't mean it will produce a tsunami. It does depend on the depth and location as well, and how much...

They had one yesterday - 8.2 - http://www.bbc.co.uk/news/world-latin-america-26846984 And now another is reported: http://nz.news.yahoo.com/a/-/world/22350089/7-4-earthquake-strikes-chile/

http://www.nationalreview.com/corner/373516/watch-earthquake-drives-la-news-anchors-under-desk-tim-cavanaugh

I'm a total noob when it comes to geology, so sorry if this is a dumb question. I live on the Ring of Fire so earthquakes are never far from my thoughts. I go to the USGS earthquake page often just to check out how our Earth is doing. Lately I've notice a cluster of quakes just north of...

Scientists find near-definitive list for rare "earthquake lights" Scientists find records of rare 'earthquake lights' http://www.usatoday.com/story/news/nation/2014/01/02/earthquake-lights-rare-phenomenon/4255097/

Part 1 can be found here: https://www.physicsforums.com/showthread.php?t=480200 Magnitude-5.3 earthquake hits Japan's Fukushima http://www.usatoday.com/story/news/world/2013/09/19/japan-fukushima-nuclear-plant/2835493/

There's been an earthquake of about 4.7 on I don't know which scale less than 50 km away from where I live. I filled a questionnaire and there was the word askew in it, so I asked google what it means and... well try yourself. Put askew in google. :smile:

Here is your opportunity to weigh in on one of the Fukushima issues. First link is the study and second link discusses the comment process. http://pbadupws.nrc.gov/docs/ML1313/ML13133A132.pdf http://pbadupws.nrc.gov/docs/ML1317/ML13175A104.pdf

I don't know that this completely fits in the mech. eng. category but I figure this crowd would know as well as anyone. so I like to spend my free time thinking about these kinds of things. I am always trying to come up with innovative solutions to problems. here goes, I have seen the...