Landslides

"The causes of landslides are not a mystery to mankind. Layers of rock and soil such that rain running along a clay or rock layer can create a slippery surface for the weight of the layers above it is a common cause. A rock jumble from previous mountain building, broken or fractured rock easily dislodged. We have stated that the earthquakes man experiences between the periodic passages of Planet X can be considered aftershocks from the last passage, and this is true of landslides also. Mountain building rumples the landscape, so the land is not flat but has steep ravines and hill sides. Older mountain ranges are recognized for their rounded or smoothed appearance, because of frequent landslides distributing the rubble.

"As we approach another passage, another Pole Shift, the pace of landslides has picked up. Why would this be? Plates under pressure will put pressure on regions that contain rumpled hillsides and deep ravines, as these give more readily than strictly flat land, thus act as a weak link. In addition, due to the wobble, the weather has gotten more extreme, with drought and deluge increasing in extremes. Dry ground, suddenly flooded with rainwater needing to seek its level as runoff, will create internal water slides between the rock and soil layers that constitute the rumpled hillsides. Is there an early warning system that mankind could use? The trembles that soil about to slide emits could be detected, yes. These are not earthquakes, and have their own frequency. "

ZetaTalk Chat Q&A: March 22, 2014

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Comment by Derrick Johnson on October 6, 2014 at 5:55am: Massive landslide blocks Guwahati-Shillong highway

A massive landslide that occurred today evening at Umling, about 43 kms from Guwahati on National Highway 40 that connects the Assam capital with Shillong, has brought traffic to a standstill, leaving hundreds of vehicles stranded on both sides for several kilometres.

Ri Bhoi district deputy SP (Traffic) Rymphang Pde said the landslide occurred at around 5:45 PM today, with passengers of several vehicles including a couple of small cars having a providential escape from the jaws of death. “It will hopefully take another three to four hours to clear the debris,” the dy SP said, indicating it will be not before midnight that the road would be cleared.

Hafl-a-dozen bulldozers have been pressed into service to clear the landslide on NH40, which is not only the only link between the capital cities of Assam and Meghalaya located 100 kms apart, but also vial lifeline for Tripura, Mizoram and the Barak Valley of southern Assam.

With earth-cutting taking place in a big way owing to widening of the original highway into a four-lane road in the last few years, the Guwahati-Shillong Road, as it is known, has experienced several smaller landslides in the past two weeks. Landslides had killed at least 18 people in Meghalaya in the past fortnight, eight of them including a pregnant woman in the heart of Shillong.

Source: http://indianexpress.com/article/india/india-others/massive-landsli...

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Comment by Andrey Eroshin on October 2, 2014 at 10:43am: 24.09.14. A total of 36 people were injured after a landslide in the sector Chimirol, Costa Rica

http://www.diarioextra.com/Dnew/noticiaDetalle/242072

http://translate.google.com/translate?hl=en&sl=auto&tl=en&a...

Comment by Derrick Johnson on September 26, 2014 at 7:34am: Landslide destroys Starrigavan restoration projects

by Robert Woolsey, KCAW
September 24, 2014 8:37 pm

The main area of the slide encompasses an area of roughly 100 acres. (USFS photo)

High rainfall this month is being blamed for a major landslide near Sitka. The US Forest Service reports that a 100-acre slide came down in the Starrigavan Valley, about ten miles from town. Although there was no structural damage in the event, hundreds of thousands of dollars of watershed restoration projects in the valley have been wiped out. The slide, and water damage to an ATV trail in the valley and other hiking trails elsewhere in Sitka — all add up to a tough month for the agency.

The scale of the Starrigavan slide has unfolded slowly. A Fish & Game biologist was in the area — apparently the morning after the slide — on Friday, September 19, and noticed that Starrigavan Creek had been diverted onto the old logging road that is now being used as an all-terrain vehicle trail.

Marty Becker is the watershed program coordinator for the Sitka Ranger District. He and other staff went to check on the problem Monday morning.

“It wasn’t until we actually climbed through the front of the slide that we saw the magnitude of it.”

Read the USFS Preliminary report on the Starrigavan Landslide here.

There was not one slide, but three. Two smaller slides across the both the north and south forks of Starrigavan Creek…

“And then one main slide that came down off the north-facing slope. Came down and ran about a third of a mile down the main channel, and ended up at the log stringer bridge, which hung up the main slide.”

Becker estimates the area of main slide to be in the neighborhood of 100 acres, starting in the old growth timber high on the valley slope and running down through the second growth to the valley floor.

Becker says the Sitka district hasn’t seen a cluster of slides like this since the mid-1990s, in Nakwasina Sound and the Katlian area, which he says are more dynamic systems. The Starrigavan slide, Becker says, is “pretty extraordinary.”

On the Herring Cove Trail

“Boy those freaky events keep us on our toes…”

Source: http://www.kcaw.org/2014/09/24/landslide-destroys-starrigavan-resto...

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Comment by Andrey Eroshin on September 23, 2014 at 2:43pm: 02.09.14. Landslide buried station in Daling, Zigui, Yichang, Hubei, China

http://www.hb.chinanews.com/photo/2014/0903/1268.html

http://translate.google.com/translate?hl=en&sl=auto&tl=en&a...

Comment by Andrey Eroshin on September 18, 2014 at 4:26pm: 12.09.14. Massive ground movement in El Salitre, Boyacá, Colombia

http://prensalibrecasanare.com/yopal/12897-en-evaluaciun-posible-am...

Comment by SongStar101 on September 13, 2014 at 8:55pm: North American bow stress, rock fracturing in Sierra Nevada Northern CA region compressing and 'peels' away...

http://geotripper.blogspot.com/2014/09/ongoing-exfoliation-event-at...

A big chunk of the Sierra Nevada caught fracturing on video

There is an ongoing geological drama going on the Sierra Nevada that may be unique (to the extent of my knowledge, which is admittedly limited in this area). Exfoliation, a process long recognized as the shaper of granitic domes and monoliths, is presently busting up the surface of a small dome at Twain Harte Lake a few miles east of the Mother Lode town of Sonora. The process has been captured on video, and is presently being monitored, due to the effects it is having on a reservoir abutment.

The event burst into the news in August when a possible dam failure warning was issued following a loud popping sound and the leakage of water from the edge of the reservoir. Once the site was investigated, a decision was reached to drain the lake until the full extent of the damage was clear. There have been at least three 'events', the last on August 3.

An employee of the lake association was very kind and allowed me to have a look at the dome and the new exfoliation shells. It was fascinating. The first thing to catch the eye was the lifeguard tower. It's tilted at an odd angle because the rock it is sitting on has been pushed upward into what is called an "A-tent" joint. My erudite and learned comment was "wow"!

Exfoliation is the breaking and fracturing of hard rocks like granite in slabs parallel to the surface of the rock. It removes corners and edges, resulting in the familiar domes found in regions like the Sierra Nevada where lots of granitic rock is exposed. It has traditionally been described as the result of 'unloading', whereby erosion strips off the overlying rock, releasing pressure and causing the rock to expand outwards, and fracturing in the process. There are some alternate explanations involving a certain amount of compression, which makes sense looking at the 'A tent' in the picture above.

There were freshly loosened slabs all over the surface of the rock, with lots of chipped edges. From the videos it is clear that the chips often snapped loose before the major slab event, like foreshocks to an earthquake (and given that earthquakes are also an example of stress release, the analogy is appropriate).

I admit I never gave it any thought, but it seems clear that the fractures are occurring in a swarm, as the stress regime changes with each break, placing new pressures in different sectors. Like a series of aftershocks following an earthquake, the rocks will continue to shatter for a period of time until a new stable regime or equilibrium is reached. I don't know any details of how or if this process has been witnessed in the past, so I couldn't even speculate on how long these rock 'pops' will continue. Maybe they are already done, but I wouldn't count on it.

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Another Article:

http://arstechnica.com/science/2014/09/a-big-chunk-of-the-sierra-ne...

Comment by Derrick Johnson on September 12, 2014 at 7:41am: J&K floods: Lakhs still stranded; landslides wreak havoc in Jammu, leave an entire village buried

Jammu/Srinagar: More than 1,10,000 people have been rescued from different parts of the flood-hit Jammu and Kashmir, but the death toll has crossed 200. Lakhs still remain stranded with many of them refusing to leave their homes. Rescuers want all people evacuated as there are concerns about the potential spread of water-borne diseases.

Over 20,000 Army personnel have been carrying out relief operations. 800 tonnes of relief material has been air dropped. The rain has now stopped and the water is receding in some areas. Where it has not receded, the Army is pumping water out to reach those trapped.

Restoring communication and connectivity is a priority. While communication lines have been restored to some extent, the Border Roads Organisation is working on restoring road links.

Meanwhile, the big fear in Jammu after the floods is that of landslides. More than 40 people lost their lives in a landslide in Sadal, a village near Udhampur. The village has been completely submerged by a landslide and has been buried under the debris. Rescue operations continue with the Army, National Disaster Response Force (NDRF) and State Disaster Response Force (SDRF) personnel deployed in the area.

The Sadal village was home to 53 families. The entire village slid down in a matter of minutes, burying all houses under tonnes of rock and mud. The villagers had no time to run to safety.

The Army rushed in 200 of its soliders to assist with rescue operations being carried out by the civil administration. The Army has been providing food to the villagers and arranging temporary shelter for them even as efforts are on to extract the bodies from the rubble. The site of the landslide is 4 km away from the nearest road, making it impossible to move heavy machinery to assist in the rescue operations.

For the families of the villagers who survived the landslide, it is a harrowing wait. Officers and men of the Udhampur Garrison say they will not vacate the area till the very last body has been pulled out. The Army stepped in after the civil administration said that a rescue operation of this scale was beyond their means. So much so the civil administration is now conspicuous in its absence and the rescue and relief operations are now being carried out single-handedly by the Army.

Source: http://ibnlive.in.com/news/jk-floods-lakhs-still-stranded-landslide...