Weather where you are

Denmark is getting warmer and the sun has a lot of power at the moment. The better days are 15 degrees C but there's still sub-zero temperatures some nights

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cliveh said:

With regards to bad weather, I often think of this wonderful shot by Robert Doisneau.

https://www.google.co.uk/search?q=R...01%2Fle-manege-de-monsieur-barre.html;326;400

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That's one of my favorites. I had a calendar of pictorialist images last year and that was in it.

Also dry here, too. We didn't get much snow either, so the drought continues. We're about to head into storm season, though. I'm not looking forward to big storms and tornado warnings.

No strong wind, no storm but a mild weather here. Sun is shining , 14 celcius degrees and Istanbul is so beatiful as usual.

We have some technology here :

http://www.ibb.gov.tr/en-US/Organization/MunicipalHistory/Pages/Live_City_View_in_Istanbul.aspx

webcameras

Sirius Glass said:

Northern Virgina Sunday 30 March It is snowing again.

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That was yesterday. Today bright, sunny upper 60's

Its Virginia, get over it.

Some rain fell at SeaTac (the regional airport that collects the official statistics for Seattle) this morning.

That officially puts us over the top as the single wettest March on record ever. We've had something like three times the normal rainfall. It has rained just about every day this month. One thing I don't worry much about is using water to wash film and prints.

All of those global warming heads-in-the-sand deniers? Better pull your heads out so you don't drown. The water table here is rising. Warmer air holds more water, and on average rainfall increases. Along with storm frequency and severity.

Although previous logging appears to be an aggravating factor, this month's non-stop rainfall was the triggering factor for this tragic event about 30 miles (48 km) north of me.

I've driven on Highway 530 around that very bend in the North Stillaguamish River many times. A family friend was born and raised in Oso, and still has relatives there. (I hope...)

Ken

Yeah

Here in the Windy City (Chicago) it's extremely windy and warm - 60's, but as usual, there's snow in the forcast.

Finally, So Cal is getting a bit of rain and, more importantly, the sierras are getting the snow we desperately need too. Not much, but we'll take what we can get.......

I read that a flurry of moderate earth quakes have been recorded in the Los Angeles area recently, a reminder of the notorious San Andreas fault. Has anyone been effected by these?

cliveh said:

I read that a flurry of moderate earth quakes have been recorded in the Los Angeles area recently, a reminder of the notorious San Andreas fault. Has anyone been effected by these?

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They've been on a different fault, but as you say, a reminder. Where I am, about 50 miles away, I felt the first one. It was a sharp jolt, then some shaking with a rolling sensation, 8 or 10 seconds total.

I read that a flurry of moderate earth quakes have been recorded in the Los Angeles area recently, a reminder of the notorious San Andreas fault. Has anyone been effected by these?

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I've been through MANY quakes in So Cal and Alaska through the years. The one in El Centro a few years back on Thanksgiving Day and now this recent one along the Puenta Hills fault line definitely got my attention. It is my understanding that the San Andreas is a slip fault, meaning two sides moving in opposite directions. Where as the PH Fault line is a thrust fault, meaning two sides going up or down. Where I live I'm stuck right between the two. I'll just say the thrust fault ones seem a bit more violent. Sure glad I missed the 9.2 in Alaska by about 2 years of living up there after that one hit.

Trail Images said:

It is my understanding that the San Andreas is a slip fault, meaning two sides moving in opposite directions. Where as the PH Fault line is a thrust fault, meaning two sides going up or down. Where I live I'm stuck right between the two. I'll just say the thrust fault ones seem a bit more violent.

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The San Andreas Fault is classified as a right-lateral (or dextral, left-lateral would be sinistral) strike-slip transform fault. Practically speaking, that means that which ever side you are standing on, the other side moves to your right. And lateral because the displacement is (mostly) horizontal.

In simple terms, the fault is moving Los Angeles northward relative to Barstow along a trend line through Palmdale. The fault is the connecting geologic structure between a spreading center further to the south in the Gulf of California, and a subduction zone further to the north off the Oregon and Washington coasts.

Plate boundary thrust faults generally exhibit less frequent, but higher energy, earthquakes. Strike-slip faults generally exhibit more frequent, but lower energy earthquakes. An aggravating factor, however, is that the strike-slip quake hypocenters (the point below the surface of the first rupture) are often shallower in depth, so that even though less energy overall is released, ground motion is more severe.

One of the worst earthquakes I've ever experienced was actually a very, very minor one here in Washington state. Hardly even made the news. But on a straight line down through the earth I was sitting in my house only about 8 miles away from the actual rupture point.

Geez, Louise. I thought the entire house had been ripped from its foundation and flipped over. It felt like it had been struck with a giant sledge hammer. It scared the crap out of me. And I grew up in Southern California.

That's also why I sat up and took notice when I saw that the USGS had a preliminary estimate for the hypocenter of the recent quake in Whittier at only 0.6 miles. Yikes. Hope that was a misprint. That'll wake your ass up real quick...

Ken

Are you guys finding fault with Southern California?

Did you say that it is all that it is cracked up to be?

When I lived there, I didn't have to find 'em. They found me. Often...

Ken

That'll wake your ass up real quick...

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TOTALLY agree with this statement, Ken. Between California and my days in Alaska I've been bounced out of bed numerous times. During the Sylmar quake I was in the shower and I broke the glass door.

Trail Images said:

TOTALLY agree with this statement, Ken. Between California and my days in Alaska I've been bounced out bed numerous times. During the Sylmar quake I was in the shower and I broke the glass door.

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During the Sylmar quake I got thrown out of bed and the bookshelves above me emptied on my head. The guy across the street had the water in his pool suddenly in his kitchen. But both of us were far luckier than those (was it 64 or 68?) staff and patients in the collapsed hospital wing. And the mashed cars under the failed freeway overpasses.

Remember this?

If that's not one of the scariest photographs ever, I don't know what is. Especially when only 12 seconds earlier everything had been just fine...



Ken

How bad a saint do you have to be to have an earthquake fault named after you?

Ken Nadvornick said:

During the Sylmar quake I got thrown out of bed and the bookshelves above me emptied on my head.

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I slept right through it and didn't know anything until I was at school and saw that some of the parquet flooring in the gymnasium had been popped up. I then was told about it by someone who could not believe that I had slept through it.

I was living in Santa Cruz when the Loma Prieta quake of '89 hit. That was some serious shakin'.

lxdude said:

How bad a saint do have to be to have an earthquake fault named after you?

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Santa Anna was a woman.
San Francisco was a man.

So does that mean that Santa Claus is a cross dresser? 'splain it to me.

YIKES......Ring Of Fire.......another quake in Chile just now at 8.0...........

8.0 is awfully strong!!!

Mike

Sirius Glass said:

Santa Anna was a woman.
San Francisco was a man.

So does that mean that Santa Claus is a cross dresser? 'splain it to me.

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No, he dresses Christmas trees.

As for Santa Anna, it depends on which one. Antonio Lopez de Santa Anna was not a woman.

Trail Images said:

YIKES......Ring Of Fire.......another quake in Chile just now at 8.0...........

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[Warning: Longish non-photographic post only for those who may be interested in a lesser known, but fascinating, way that anyone can actually predict significantly higher risk periods for major earthquakes anywhere in the world.]

There is also a strong correlation between the phases of the moon and strong earthquakes. And a cool urban legend story to go along with it.

As the legend goes, during that same Sylmar earthquake there was a McDonnell Douglas aeronautical engineer living in the San Fernando Valley near the epicenter. Like most everyone else that morning, he also got tossed out of bed at 6:00am.

As he was picking himself up off the floor he supposedly glanced out his bedroom window and noticed that the moon was full. Being a good engineer this observation stuck in his mind. After a few days of mentally chewing on it, he called up a friend who was a geologist and asked if there might be any correlation.

Now it's a well known geologic fact that the earth itself is not perfectly solid, but rather quite elastic. In fact, the planet also experiences tides, just like the oceans. Except that the tidal deformation is only on the order of a couple of centimeters maximum.

So the geologist decided to plot the worldwide frequency of major seismic events (6.0+ on the Richter scale) against the lunar cycles. The plots matched almost perfectly. As well, a significant majority of those events had occurred within plus or minus two hours of dawn or dusk local time.

What was happening was that (picture this mentally) with the sun and moon on opposite sides of the earth, or both on the same side, the planet itself would be stretched oblong by slightly stronger parallel gravitational attraction. That stretching, or pulling apart, would be maximized at the point where the earth's rotation placed any fault lines in opposition at either the top or the bottom of the planet, if the sun and moon were horizontally oriented on either side. And that particular geometric orientation always occurs at sunrise or sunset. Or within plus or minus two hours of it.

That orientation, and the gravitational anomaly associated with it, is apparently just enough to reduce the static friction preventing rupture in those faults that are already near the breaking point. When those faults are already at their threshold, all it takes is a new or full moon orientation at near sunrise or sunset to be the straw that breaks the camel's back.

In both of the following cases the earthquakes occurred within one day of either a new or full moon, and within two hours of sunrise or sunset.

The Sylmar earthquake occurred on February 9, 1971 at 6:00:41 AM in the morning. Sunrise was at 6:44 AM. Here's a chart of the phases of the moon for February, 1971. The full moon was on February 10th, one day later:





The recent near-Los Angeles (main) seismic event occurred on March 29, 2014 at 9:09:42 PM in the evening. Sunset was at 7:12 PM. Here's a chart of the phases of the moon for March, 2014. The new moon was on March 30th, one day later:





So just by keeping an eye on the monthly phases of the moon, it's possible to predict (and live in fear of) periods of significantly higher risk for major earthquakes. My wife has heard me ask so often for years now "Was it a full moon?" every time there's an earthquake that she now just automatically includes that info when she reads about one and tells me.

And that brand new major 8.2 earthquake today off the coast of Chile? Well, today is only 2 days after the new moon, and it happened at 8:46:46 PM local time, when sunset was at 7:38 PM.

There you go...

Ken

There is also a strong correlation between the phases of the moon and strong earthquakes. And a cool urban legend story to go along with it.

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I'd have to say there are probably a lot of additional ideas and theories on what might add to the events, Ken. This information seems as plausible as I've seen or heard.

Years ago in college I jokingly made a diagram on a black board of what my thoughts on causes of quakes using the state of California as the primary target point if you will. My thought was based more on geological with oil drilling, ground water consumption, overall weight of buildings, population, freeways, along the fault lines. As well as a variety of other factors including atomic bomb tests below ground level in Nevada, etc. etc. Of course today you could factor in fracking too. It was all done in jest back then, but one has to wonder if there are possible contributing factors........

As mainly an east-coaster, I don't know which plates are next to what are where fault lines are. But I saw a report that the mudslide in Oso was likely the result of a tremor a couple of weeks before. Is that along any of the same ones shaking now? And are these quakes just being mentioned because of the number or is this a cluster that's larger than usual?