Dear Djamel, to illustrate Behnam's answer, see the attached paper, which shows clear relationship. Landslides can also occur in mountainous island humid environments, without earthquake triggering, but only by liquefaction of terrain above shallow quasi-planar (oblique) fault systems during typhoon or hurricane (ex: New Caledonia, japan islands, etc...). Regards, Anicet

There are many causes for a landslide to occur as indicated by Dr. Behnam and Dr. Anicet. Tectonic activities definitely enhance the possibility of occurrence of landslides in a given region. Places which have undergone intensive fracturing and faulting due to tectonic activities are also considered as main factors while delineating the landslide prone areas.

Landslide phenomenon depends on several factors such as dip, geology, rain, vegetation, earthquake etc. Moreover, it is as slide (transitional and rotational), flowing (debris flow, soil flow, mud flow, soil and mud flow etc.), rock fall types, which are more frequent in the flowing type area and rock falls in a landslide is higher than the other types.It is clear from many studies that landslide is a geological processes in which tectonics play an important role. Please see the attached studies , highlight the influence of tectonic fractures and earth surface factors on landslide occurrence.

https://www.researchgate.net/publication/229430711_Relationships_between_tectonics_slope_instability_and_climate_change_Cosmic_ray_exposure_dating_of_active_faults_landslides_and_glacial_surfaces_in_the_SW_Alps

https://file.scirp.org/pdf/OJG_2013071115401145.pdf

http://earthweb.ess.washington.edu/gomberg/Papers/GombergetalGeology95.pdf

Article Monitoring landslides and tectonic motions with the Permanen...

Yes, this exists in the Dead Sea environment, although the cases are complicated by the induced lowering of the Dead Sea Level, for more please see.

https://www.researchgate.net/profile/Damien_Closson/publication/227212506_Landslides_along_the_Jordanian_Dead_Sea_coast_triggered_by_the_lake_level_lowering/links/59228ab1a6fdcc4443f60d28/Landslides-along-the-Jordanian-Dead-Sea-coast-triggered-by-the-lake-level-lowering.pdf?_iepl%5BhomeFeedViewId%5D=odYSQ4fTtHB3CJrwydxoGdJT&_iepl%5Bcontexts%5D%5B0%5D=pcfhf&_iepl%5BinteractionType%5D=publicationDownload&origin=publication_detail&ev=pub_int_prw_xdl&msrp=32wiGbXouqcTEKG9BKuTz4JlXeAV6e5MoiHQB2MCjBFRnI6LbQo6EPj_c0bKe54iTmu0sgZyhMTuhQT33AhP-VJoS_hsU4h019z7fkUKsr2mHN2cl4kASZz9.vAItOTrakiklHfzuqNLPo8yWSmIuq7ampp8IMBg6JCLUhrlg33p5F7wtEnLUTzpHJ8RzDIKuoIj5dH7ugptMPrHIhOjZKtJmf8lZWg.NHtD69QIB1xq9hTo4GMH2Qb1cQCR4CRe-gTOWGt9uDi5hU2H7Ufny_6RiKCifxG3f0IywuXnTHqKyP9UjHkYQj3GeiZea3C8Hhs8QQ.EoK3xxbTORUBDyRXpTNFhm4NtNm2FesNyY1QY_NJ9ffL_JSZKJ54JLiXl9ZH5V6RRrxQqdxzTTbMbcithOsI4-Pm9v3v9zHERiDaog

Fig 16 in particular.

Dear Djamel,

You raise two important issues: the causes of slope instability and the causes of landslides. The former depends of the inherent configuration of permeable, impermeable, hard and soft rocks and sediments and the angle of slope. The latter results from external causes and triggers such as rainstorms, earthquake and fracking vibrations that can produce thixotropic deconsolidation of vulnerable clays and shales underlying better consolidated rocks, whose mass in consequence can overcome subjacent friction and slide downhill.

Dear Djamel,

There is increasing evidence that some landslides are controlled by faults. For example, when an earthquake strikes, the location and orientation of the seismogenic fault, as well as the relative motion between the two sides of the fault and the type of movement, can strongly control the distribution of the coseismic landslides and of the rock damage that can produce mass wasting in the subsequent years (or decades or centuries) triggered by hydrological conditions.

Furthermore, faults (even if not active anymore) along the slopes can constitute preferential paths of erosion or sliding, and can control the overall slope morphology.

More than 2000 landslide were triggered within less than a minute time due to shaking effect of October 8, 2005 Kashmir earthquake of Ms 7.6. Rocks of the area are already sheared and deformed by long-term tectonic deformation caused by India-Asia collision.