@article{PAR00012226,
  title = {{Q}uantitative assessment of in-situ salt karstification using shear wave velocity, {D}ead {S}ea},
  author = {{E}zersky, {M}. and {L}egchenko, {A}natoli},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {D}ead {S}ea ({DS}) coastal areas have been dramatically affected by sinkhole formation since around 1990. {S}uch sinkholes along both {I}sraeli and {J}ordanian shores are linked to karst cavities that form through slow salt dissolution. {A} quantitative estimate of such in-situ salt karstification would be an important indicator of sinkhole hazard. {O}ne of the indications of salt karstification is its increased hydraulic conductivity, caused by the development of dissolution cavities forming conducting channels within the salt layer. {W}e measured the hydraulic conductivity ({K}) versus shear-wave velocity ({V}s) of {DS} salt in situ for estimating the actual salt karstification in areas of sinkhole development. {T}hese parameters were measured with the {M}agnetic {R}esonance {S}ounding ({MRS}) and {M}ultichannel {A}nalysis of {S}urface {W}aves ({MASW}) methods, respectively. {U}nderstanding of the field relationships was augmented by similar inter-relations obtained in the laboratory on samples of {DS} salt. {I}n-situ salt velocities {V}s vary from 750 m/s to over 1650 m/s, while hydraulic conductivity ({K}) in the same zones varies between about 10(-4) m/s to slightly over 10(-8) m/s. {B}oth field and laboratory {K} and {V}s values fit the exponential function {I}n({K}) = -0.0045 * {V}-s - 5.416 with a determination coefficient ({R}-2) of 0.88.{A} classification based on {V}s and {K} was generated for salt conditions and the corresponding degrees of sinkhole hazard, which was verified in the {M}ineral {B}each sinkhole development area. {T}he mapping of sinkhole sites shows that they form within highly conductive zones with {K} >= 5.5.10(-5). {I}t is suggested that this methodology, with some modification, can be used for evaluating the conductive properties of karstified rock and associated sinkhole hazards.},
  keywords = {{D}ead {S}ea ; karst ; {MRS} ; {MASW} ; salt ; {V}s ; {ISRAEL} ; {JORDANIE}},
  booktitle = {},
  journal = {{G}eomorphology},
  volume = {221},
  numero = {},
  pages = {150--163},
  ISSN = {0169-555{X}},
  year = {2014},
  DOI = {10.1016/j.geomorph.2014.06.014},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00012226},
}