30
   

Quake activity along the San Andreas fault is picking up

 
 
farmerman
 
  2  
Reply Tue 12 May, 2015 06:51 pm
@Ragman,
make your day a bit happier, your Geological Survey collects locations of all sinkholes and puts em on a map that you can buy and fret over.
Lots of incipient sinkholes out there jut waiting for someone to fart wrong.
Up here in P, our sinkholes usually dont collapse ntil we have really long droughts. The soil paryicles just dry and crack and the soil cohesion just goes to **** and someones cow disappears.
We hve a very good sinkhole mapping system that the P Survey hd collected for every county that contins limestone rock.
Some of them are really neat.

You have that shitty cocquina rock thats as strong as a saltine, and as the soil begins to drop out beneath the sinkhole area,(in your case its mostly washed out by cave waters) Its amzaing how you lose whole parking lots.
Back in the Ice Age, Fla was a couple more hundred feet above water than today, so the caves contain animal fossils of elephants, dire wolves , huge bats. Then these caveopenings began to fill in by runnoff carrying silts
0 Replies
 
Butrflynet
 
  1  
Reply Tue 19 May, 2015 03:14 pm
M4.0 - CENTRAL CALIFORNIA

Preliminary Earthquake Report
Magnitude 4.0
Date-Time
19 May 2015 18:36:02 UTC
19 May 2015 11:36:03 near epicenter
19 May 2015 12:36:02 standard time in your timezone
Location 36.661N 120.901W
Depth 1 km
Distances
40 km (25 mi) SSW of South Dos Palos, California
44 km (27 mi) S of Los Banos, California
46 km (29 mi) NE of Soledad, California
47 km (29 mi) WSW of Mendota, California
219 km (136 mi) SSE of Sacramento, California
Butrflynet
 
  1  
Reply Tue 19 May, 2015 03:14 pm
@Butrflynet,
M6.5 - PACIFIC-ANTARCTIC RIDGE

Preliminary Earthquake Report
Magnitude 6.5
Date-Time
19 May 2015 15:25:21 UTC
19 May 2015 06:25:22 near epicenter
19 May 2015 09:25:21 standard time in your timezone
Location 54.301S 132.110W
Depth 12 km
Distances
2151 km (1334 mi) N of Siple, Mount, Antarctica
3891 km (2412 mi) WSW of Puerto Natales, Chile
3912 km (2425 mi) WSW of Punta Arenas, Chile
3983 km (2469 mi) WSW of Ushuaia, Argentina
3250 km (2015 mi) S of Adamstown, Pitcairn
0 Replies
 
Butrflynet
 
  1  
Reply Wed 20 May, 2015 06:47 pm
M6.9 - SANTA CRUZ ISLANDS REGION

Preliminary Earthquake Report
Magnitude 6.9
Date-Time
20 May 2015 22:48:54 UTC
21 May 2015 09:48:54 near epicenter
20 May 2015 16:48:54 standard time in your timezone
Location 10.877S 164.154E
Depth 19 km
Distances
184 km (114 mi) W of Lata, Solomon Islands
487 km (302 mi) ESE of Honiara, Solomon Islands
609 km (378 mi) NNW of Luganville, Vanuatu
881 km (546 mi) NNW of Port-Vila, Vanuatu
1079 km (669 mi) ESE of Arawa, Papua New Guinea
Butrflynet
 
  1  
Reply Fri 22 May, 2015 01:27 pm
Interesting series of quakes in the last 12 hours...

M4.2 - OFF THE COAST OF OREGON

Preliminary Earthquake Report
Magnitude 4.2
Date-Time
22 May 2015 07:40:46 UTC
21 May 2015 23:40:46 near epicenter
22 May 2015 01:40:46 standard time in your timezone
Location 43.470N 127.052W
Depth 10 km
Distances
217 km (135 mi) W of Bandon, Oregon
229 km (142 mi) W of Coos Bay, Oregon
302 km (187 mi) W of Roseburg, Oregon
324 km (201 mi) WNW of Grants Pass, Oregon
360 km (223 mi) WSW of Salem, Oregon


M5.4 - NEVADA

Preliminary Earthquake Report
Magnitude 5.4
Date-Time
22 May 2015 18:47:42 UTC
22 May 2015 11:47:42 near epicenter
22 May 2015 12:47:42 standard time in your timezone
Location 37.284N 114.650W
Depth 6 km
Distances
38 km (24 mi) SSW of Caliente, Nevada
74 km (46 mi) NW of Mesquite, Nevada
96 km (60 mi) WNW of Saint George, Utah
102 km (63 mi) W of Washington, Utah
453 km (281 mi) SSW of Salt Lake City, Utah



M4.1 - CENTRAL CALIFORNIA

Preliminary Earthquake Report
Magnitude 4.1
Date-Time
22 May 2015 18:48:14 UTC
22 May 2015 11:48:15 near epicenter
22 May 2015 12:48:14 standard time in your timezone
Location 36.132N 116.901W
Depth 44 km
Distances
60 km (37 mi) NE of Searles Valley, California
82 km (51 mi) W of Pahrump, Nevada
89 km (55 mi) NE of Ridgecrest, California
136 km (84 mi) W of Summerlin South, Nevada
420 km (260 mi) SE of Carson City, Nevada


M3.8 - NEVADA

Preliminary Earthquake Report
Magnitude 3.8
Date-Time
22 May 2015 19:05:23 UTC
22 May 2015 12:05:23 near epicenter
22 May 2015 13:05:23 standard time in your timezone
Location 37.284N 114.650W
Depth 9 km
Distances
38 km (24 mi) SSW of Caliente, Nevada
74 km (46 mi) NW of Mesquite, Nevada
96 km (60 mi) WNW of Saint George, Utah
102 km (63 mi) W of Washington, Utah
453 km (281 mi) SSW of Salt Lake City, Utah
Butrflynet
 
  1  
Reply Fri 22 May, 2015 04:54 pm
@Butrflynet,
This area is really getting hit hard with these large quakes.

M6.8 - SOLOMON ISLANDS

Preliminary Earthquake Report
Magnitude 6.8
Date-Time
22 May 2015 21:45:18 UTC
23 May 2015 08:45:19 near epicenter
22 May 2015 15:45:18 standard time in your timezone
Location 11.086S 163.685E
Depth 7 km
Distances
205 km (127 mi) ESE of Kirakira, Solomon Islands
448 km (278 mi) ESE of Honiara, Solomon Islands
619 km (384 mi) NW of Luganville, Vanuatu
889 km (551 mi) NW of Port-Vila, Vanuatu
1046 km (649 mi) ESE of Arawa, Papua New Guinea
0 Replies
 
Butrflynet
 
  1  
Reply Fri 22 May, 2015 04:56 pm
@Butrflynet,
the 5.4 quake was revised and downgraded to 4.8.

M4.8 - NEVADA

Preliminary Earthquake Report
Magnitude 4.8
Date-Time
22 May 2015 18:47:42 UTC
22 May 2015 11:47:43 near epicenter
22 May 2015 12:47:42 standard time in your timezone
Location 37.292N 114.655W
Depth 4 km
Distances
37 km (23 mi) SSW of Caliente, Nevada
75 km (47 mi) NW of Mesquite, Nevada
97 km (60 mi) WNW of Saint George, Utah
103 km (64 mi) W of Washington, Utah
453 km (281 mi) SSW of Salt Lake City, Utah



By CASSANDRA TALOMA
and KIMBER LAUX
LAS VEGAS REVIEW-JOURNAL
A 4.8-magnitude earthquake shook Las Vegas and surrounding areas Friday morning, and the state closed parts of the Spaghetti Bowl to inspect ramps for possible structural damage, backing up traffic for miles.

The quake, which hit at 11:47 a.m., was centered about 23 miles south-southwest of Caliente, the U.S. Geological Survey said. The magnitude was originally reported as 5.4, but the official number was lowered twice Friday afternoon.

The ramps from southbound U.S. Route 95 to both north- and southbound Interstate 15 were still closed late Friday afternoon, the Nevada Department of Transportation said. The damage had not been officially linked to the earthquake, and it was not clear how long the ramps would remain closed.

The Martin Luther King Boulevard on-ramp to southbound I-15 was also closed, NDOT wrote on its website.

NDOT said it was not doing a widespread inspection of the state’s bridges as a result of the earthquake because most bridges are designed and engineered to withstand small quakes.

“All of our bridge structures are designed to withstand rigorous wind and earthquake loading,” NDOT spokesman Tony Illia said. “Nevada lies within an active seismic zone, which is something that we take into account during the project design and engineering phase.”

Meanwhile, the Highway Patrol was checking for possible damage at other major freeway interchanges, Trooper Loy Hixson said.

Illia said Nevada has some of the best-rated bridges in the country, according to a recent report by the American Road and Transportation Builders Association. Only 1.8 percent of Nevada bridges are classified as structurally deficient, which is the lowest in the country. The national average is 6 percent.

Officials at McCarran International Airport said there were no disruptions in operations and planes were routinely taking off and landing after the quake.

The Las Vegas Monorail, the High Roller at the Linq and rides at Circus Circus’ Adventuredome were unaffected by the earthquake, employees at each company said Friday afternoon.

‘DID YOU FEEL IT?’

The Lincoln County Sheriff’s Office had no immediate reports of any damage in or around Caliente.

Though the temblor was felt across Southern Nevada and as far away as Irvine, Calif., and Salt Lake City, “we barely felt a thing here,” said Deputy Dathan Lewis at the sheriff’s office in Pioche, about 20 miles north of Caliente.

A couple of items fell off the shelves of a Caliente grocery store, but there was no serious damage to the old building, Great Basin Foods manager Alyson Hammond said.

At Priest Elementary School, near Craig Road and Simmons Street in North Las Vegas, former Review-Journal reporter Francis McCabe said the shaking seemed to go on for about 15-30 seconds and prompted a few people to venture outside the building.

The USGS reported four significant aftershocks, with magnitudes 3.8, 3.0, 3.4 and 2.5, between 12:05 and 12:58 p.m.

People across the Las Vegas area reported feeling the first earthquake, including in Henderson, North Las Vegas and Boulder City. People in three other states — Utah, Arizona and California — also reported it through the USGS website’s “Did You Feel It?” feature. A man who works in Boulder City reported that his office had “shifted/swayed.”

In downtown Las Vegas, District Judge David Barker was in the midst of a grand jury hearing on the 10th floor of the Regional Justice Center when the quake shook the valley. Barker, who has practiced law in Southern California, guessed that the earthquake measured about 5.5 on the Richter scale.

“You might want to check outside,” the judge said after the proceedings. “We may have had a gentle ride.”

A marshal on the top floor of the 17-story building at 200 Lewis Avenue reported a few nervous people, but picture frames remained on the walls.

A woman in southwest Mesquite said her husband was sitting in his reclining rocking chair, watching a movie, when the chair began to rock on its own. Betty Richer, 65, said the chair rocked for about 20 seconds after the start of the quake. The couch she was sitting on felt as if someone were moving it back and forth, she said.

Richer and her husband moved from Colorado to their home in Mesquite, near the CasaBlanca Resort golf course, about a year ago. The last experience she had with an earthquake was in the late 1990s when she felt tremors in Ridgway, Colorado, she said.

“But that was nothing like this,” Richer said. Lampshades were swaying and the home’s ceiling fans shook abnormally for about 30 seconds after the quake, she said, but the couple didn’t feel any aftershocks.

http://www.reviewjournal.com/news/las-vegas/48-magnitude-earthquake-shakes-las-vegas-spaghetti-bowl-ramp-closed
0 Replies
 
Butrflynet
 
  1  
Reply Fri 29 May, 2015 08:05 am

Preliminary Earthquake Report
Magnitude 5.1
Date-Time
29 May 2015 07:05:34 UTC
29 May 2015 00:05:35 near epicenter
29 May 2015 01:05:34 standard time in your timezone
Location 40.804N 122.770W
Depth 5 km
Distances
11 km (7 mi) NNE of Lewiston, California
36 km (22 mi) WNW of Shasta Lake, California
40 km (25 mi) NW of Redding, California
82 km (51 mi) NNW of Red Bluff, California
269 km (167 mi) NNW of Sacramento, California
0 Replies
 
Butrflynet
 
  1  
Reply Fri 29 May, 2015 08:06 am

Preliminary Earthquake Report
Magnitude 7.0
Date-Time
29 May 2015 07:00:08 UTC
28 May 2015 21:00:08 near epicenter
29 May 2015 01:00:08 standard time in your timezone
Location 56.689N 156.578W
Depth 51 km
Distances
113 km (70 mi) NNW of Chirikof Island, Alaska
633 km (392 mi) SW of Anchorage, Alaska
669 km (415 mi) SW of Knik-Fairview, Alaska
1025 km (636 mi) SSW of College, Alaska
1318 km (817 mi) W of Whitehorse, Canada
0 Replies
 
Butrflynet
 
  3  
Reply Fri 29 May, 2015 04:30 pm
http://www.hollywoodreporter.com/news/a-seismologist-reviews-san-andreas-798800

by Lucy Jones 5/29/2015 8:24am PDT
U.S. Geological Survey seismologist Dr. Lucy Jones breaks down the tumbling skyscrapers, tidal waves and more.

Documentaries educate, while movies entertain. Many documentaries explain facts, while most movies explore emotions. The new film San Andreas clearly is not a documentary. But it does capture some of the emotional realities of a disaster.

Nobody should confuse San Andreas with Seismology 101. Hollywood usually exaggerates for effect, and this movie is no exception; both the magnitude of the shaking and the damage displayed are exaggerated beyond reality. Magnitude 9 earthquakes only occur on “subduction zones,” places where tectonic plates collide, pushing one plate under another and deforming the sea floor to create tsunamis. It has been millions of years since there was an active subduction zone under Los Angeles or San Francisco. The modern day San Andreas Fault maxes out at about magnitude 8.3, and, being mostly on land, will never produce a big tsunami.

The level of destruction portrayed in the movie is over-the-top, collapsing high rises with heedless abandon. The gaping chasm we see rupturing the San Andreas in central California belongs to the realm of the completely impossible. If the fault could open up like that, there would be no friction — and without friction there would be no earthquake.

San Andreas makes a hero of the Caltech seismologist predicting the coming disaster. We seismologists sure wish we could do so, but we have yet to find any way to foresee the time of a particular earthquake. Magnetic and electric signals, strain meters and even animal behavior have been studied without success. The only time we know an earthquake becomes more likely is right after another one because of earthquake triggering, an important piece of seismology the movie gets right.

In San Andreas, a magnitude 7.1 in Nevada triggers a magnitude 9.1 in Los Angeles that triggers a magnitude 9.6 in San Francisco. If you adjust the magnitudes to what’s possible on the real San Andreas, the triggering pattern is actually plausible. In the day after the 1906 earthquake that devastated San Francisco, magnitude 5 to 6 earthquakes ruptured through Imperial Valley, Santa Monica Bay, Oregon and Nevada. At those distances, we call them “triggered earthquakes” instead of “aftershocks,” but they are common. The aftershocks that continue to rattle the characters in the movie are representative of what indeed could follow a real event.

The most plausible part of San Andreas is its portrayal of the emotions in a disaster. Loss of communication brings fear to families, while the knowledge of how to protect yourself and those around you reduces that fear and boosts the chances of survival. San Andreas nicely shows that knowing the fundamentals of first aid, how to “Drop, Cover, Hold On,” that tsunamis can be preceded by a draw-down of the ocean, that landlines work when cell phones are out and that having a “plan B” all can make life easier and safer after a big earthquake.

(Spoiler alert!) Even better, a young woman — Blake Gaines (played by Alexandra Daddario) — not only saves herself and those with her because of that knowledge and competence; she even wins the heart of the boy, because she is competent. That’s a message I can applaud.
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 07:31 am
M4.7 - NORTHERN CALIFORNIA

Preliminary Earthquake Report
Magnitude 4.7
Date-Time
30 May 2015 11:33:37 UTC
30 May 2015 04:33:38 near epicenter
30 May 2015 05:33:37 standard time in your timezone
Location 39.469N 123.526W
Depth 38 km
Distances
12 km (7 mi) WNW of Brooktrails, California
44 km (27 mi) NW of Ukiah, California
96 km (60 mi) NW of Clearlake, California
110 km (68 mi) NNW of Healdsburg, California
201 km (125 mi) WNW of Sacramento, California
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 07:32 am
M4.8 - CENTRAL CALIFORNIA

Preliminary Earthquake Report
Magnitude 4.8
Date-Time
30 May 2015 11:33:55 UTC
30 May 2015 04:33:55 near epicenter
30 May 2015 05:33:55 standard time in your timezone
Location 35.827N 121.252W
Depth 87 km
Distances
21 km (13 mi) NNW of San Simeon, California
44 km (27 mi) SSW of King City, California
54 km (33 mi) S of Greenfield, California
55 km (34 mi) WNW of Paso Robles, California
306 km (190 mi) S of Sacramento, California
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 07:33 am
M5.5 - NORTHERN CALIFORNIA

Preliminary Earthquake Report
Magnitude 5.5
Date-Time
30 May 2015 11:33:37 UTC
30 May 2015 04:33:38 near epicenter
30 May 2015 05:33:37 standard time in your timezone
Location 39.469N 123.526W
Depth 38 km
Distances
12 km (7 mi) WNW of Brooktrails, California
44 km (27 mi) NW of Ukiah, California
96 km (60 mi) NW of Clearlake, California
110 km (68 mi) NNW of Healdsburg, California
201 km (125 mi) WNW of Sacramento, California
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 07:34 am
M7.8 - BONIN ISLANDS, JAPAN REGION

Preliminary Earthquake Report
Magnitude 7.8
Date-Time
30 May 2015 11:23:02 UTC
30 May 2015 20:23:03 near epicenter
30 May 2015 05:23:02 standard time in your timezone
Location 27.831N 140.493E
Depth 677 km
Distances
189 km (117 mi) WNW of Chichi-shima, Japan
771 km (478 mi) SSE of Shimoda, Japan
781 km (484 mi) SSE of Oyama, Japan
783 km (485 mi) SE of Shingu, Japan
874 km (542 mi) S of Tokyo, Japan
Butrflynet
 
  1  
Reply Sat 30 May, 2015 07:36 am
@Butrflynet,
OKYO — A powerful but extremely deep earthquake struck off Japan's Ogasawara islands on Saturday, but officials say there is no danger of a tsunami.

Japan's Meteorological Agency says the offshore earthquake struck Saturday at 8:24 p.m. at a depth of 370 miles. The U.S. Geological Survey said the quake had a magnitude of 7.8 and a depth of 421 miles.

Public broadcaster NHK said there were no immediate reports of injuries or damage. The meteorological agency did not issue a tsunami warning because the quake struck so far beneath the earth's surface. The Ogasawara islands are about 620 miles south of Tokyo.
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 01:24 pm
== PRELIMINARY EARTHQUAKE REPORT ==



Region: CENTRAL CALIFORNIA
Geographic coordinates: 35.827N, 121.252W
Magnitude: 4.8
Depth: 87 km
Universal Time (UTC): 30 May 2015 11:33:55
Time near the Epicenter: 30 May 2015 04:33:55
Local standard time in your area: 30 May 2015 05:33:55

Location with respect to nearby cities:
21 km (13 mi) NNW of San Simeon, California
44 km (27 mi) SSW of King City, California
54 km (33 mi) S of Greenfield, California
55 km (34 mi) WNW of Paso Robles, California
306 km (190 mi) S of Sacramento, California
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 01:24 pm
== PRELIMINARY EARTHQUAKE REPORT ==

***This event has been revised.


Region: NORTHERN CALIFORNIA
Geographic coordinates: 39.469N, 123.526W
Magnitude: 5.5
Depth: 38 km
Universal Time (UTC): 30 May 2015 11:33:37
Time near the Epicenter: 30 May 2015 04:33:38
Local standard time in your area: 30 May 2015 05:33:37

Location with respect to nearby cities:
12 km (7 mi) WNW of Brooktrails, California
44 km (27 mi) NW of Ukiah, California
96 km (60 mi) NW of Clearlake, California
110 km (68 mi) NNW of Healdsburg, California
201 km (125 mi) WNW of Sacramento, California
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 01:25 pm
M6.4 - IZU ISLANDS, JAPAN REGION

Preliminary Earthquake Report
Magnitude 6.4
Date-Time
30 May 2015 18:49:07 UTC
31 May 2015 04:49:08 near epicenter
30 May 2015 12:49:07 standard time in your timezone
Location 30.768N 143.021E
Depth 13 km
Distances
398 km (247 mi) SE of Hachijo-jima, Japan
546 km (339 mi) SSE of Katsuura, Japan
552 km (342 mi) SSE of Tateyama, Japan
552 km (342 mi) SSE of Kawaguchi, Japan
627 km (389 mi) SSE of Tokyo, Japan
0 Replies
 
Butrflynet
 
  1  
Reply Sat 30 May, 2015 01:32 pm
@Butrflynet,
A magnitude-7.8 earthquake struck off the southern coast of Japan on Saturday, shaking buildings in Tokyo and interrupting subway service, but causing no major damage or injuries.

The epicenter was located 540 miles south of Tokyo in the Ogasawara Islands, according to the U.S. Geological Survey, which initially reported the quake as a magnitude-8.5.

The Japan Meteorological Agency reports that no tsunami warnings were issued.


The strong quake rattled buildings in the capital for about a minute, briefly shutting down subways, Japan Today reports.

NHK reports that train service between Tokyo and Osaka was halted due to a power outage.

Naoki Hirata, an earthquake expert at the University of Tokyo's Earthquake Research Centre, told NHK that while it was a "very big quake" and "shaking was felt over a broad areas," there was little danger of a tsunami because it it was centered 350 miles below the surface.
0 Replies
 
Butrflynet
 
  2  
Reply Sat 30 May, 2015 01:39 pm
Corrections galore. All these California quakes are reported in error. The USGS's automated reporting system is having trouble distinguishing the two large quakes in Japan today and mistakenly reporting them as also being quakes in California.


SAN FRANCISCO (CBS SF) — Two powerful earthquakes, measuring 4.8 and a 5.5 magnitudes did not hit San Simeon and Brooktrails early Saturday morning. The widespread reports of the quakes are the result of a glitch in the systems used to quickly spread the word about damaging tremors.

Automated earthquake sensors, and the text messaging, email alerts, and automated Twitter alerts associated with it again appeared to malfunction for the United States Geological Survey and the media outlets that have built automated systems to report them to readers.

RELATED ARTICLE: USGS ‘Quakebot’ Alert Mistakenly Reports Magnitude 5.1 Quake Near Redding

A real quake did hit, a massive magnitude 7.8 struck the open ocean hundreds of miles south of Tokyo at 4:23 a.m. Pacific time, over 400 miles beneath the earth’s crust, sending shockwaves of seismic energy around the globe.

About fifteen minutes later, the USGS sent out two alerts, one about a quake, later revised to a 5.5 near Brooktrails, California and another about a San Simeon earthquake. The automated services tweeted about it, also triggering two LA Times articles written by its Quakebot algorithm and read by a human editor before publishing.

The problem is these reported events never happened, and the alert for the actual quake off Japan occurred about five minutes after first two false alerts.

A USGS geophysicist explained that the Japan quake was so deep and strong that it sends ripples of energy around the globe, and the Northern California Seismic Network picked up those spikes from the initial waves and falsely reported them as additional quakes. The problem is likely to recur whenever a strong and deep quake happens.
0 Replies
 
 

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