The Lisan peninsula is about 15 by 25 km . Two well-contrasted zones are distinguished: a triangu... more The Lisan peninsula is about 15 by 25 km . Two well-contrasted zones are distinguished: a triangularshape tableland corresponding to a former “peninsula”, at the time when the Dead Sea was composed of two sub-basins connected by the shallow Lynch strait and a wave-cut platform that emerged from the 1970s. Since the 1980s, the Dead Sea is only constituted by the northern deeper sub-basin.
Second International Conference on Engineering Geophysics, 2013
ABSTRACT Some areas of the United Arab Emirates suffered from subsidence, cavities and related pr... more ABSTRACT Some areas of the United Arab Emirates suffered from subsidence, cavities and related problems,[0]. Subsidence and, in general, surface land deformations and displacement phenomena, typically involve large regions in the geographical meaning. For such regions, in principle, the terrain displacements should be monitored with an accuracy that is in the orders of magnitude smaller than the spatial resolution: one measurement every several meters should bring an accuracy of few centimetres or even millimetres. Not many technologies can nowadays provide such a combination. One of the few is Synthetic Aperture Radar Interferometry, and all related developments, that can, generally, be identified as Advanced Interferometric or Interferometric Stacking techniques. This paper presents one case study in Al-Ain region (UAE) by exploiting Interferometric Stacking techniques to monitor land displacements in the order of few millimetres per year.
This work deals with the creation of a sinkholes database for the Jordanian coast of the Dead Sea... more This work deals with the creation of a sinkholes database for the Jordanian coast of the Dead Sea, Ghor Al Haditha area. Ground collapses inventories were carried out between 1991 and 2012. The lineament is replaced and analyzed in its structural setting at regional and local scales. Its direction (N 24 E) is sub-parallel to the ones displayed by most published focal mechanisms in that zone especially the one associated to the 23rd April 1979 earthquake (Mb = 5.1; N 20 E - 5 deg, Arieh et al 1982), which is representative of all focal mechanisms calculated on a fault plane compatible with the general direction of the Jordan - Dead Sea Transform fault system for the east coast of the Dead Sea area. The alignment of sinkholes is constituted by thirteen minor linear segments separated by as many empty spaces. Their organization suggests the existence of a rotational effect caused by stress between two parallel strike-slip faults. Four minor linear units present an en-echelon arrangement from which one can deduce the presence of a local extensional stress field. In this context, sinkholes locations provide information of subsurface discontinuities interpreted as hidden fractures.
ABSTRACT For several decades, surface water and groundwater located in the closed Dead Sea basin ... more ABSTRACT For several decades, surface water and groundwater located in the closed Dead Sea basin experience excessive exploitation. In fifty years, the level of the terminal lake has fallen by about 30 meters and its surface shrunk by one third. The coastal zone is the one that best shows the stigma of the general environmental degradation. Among these are the sinkholes, landslides and subsidence. For years, these phenomena are relatively well documented, particularly sinkholes and subsidence. Over the past five years, field observations combined with ground deformations measurements by radar interferometric stacking techniques have shown that the intensity (size, frequency) of the collapses is increasing in the most affected part of the southern Dead Sea area. The zones of the dried up Lynch Strait, the Lisan peninsula and Ghor Al Haditha in Jordan seem the most affected. Very high resolution (0.5 to 2 m) GeoEye satellite images have shown that many sinkholes also formed below the level of the Dead Sea. The water transparency allows observations up to several meters deep. These data contribute to the validation of the models developed in connection with the deformation of the fresh/saline water interface due to an imbalance always more pronounced between the levels of the surrounding groundwaters and of the terminal lake.
The Lisan peninsula is about 15 by 25 km . Two well-contrasted zones are distinguished: a triangu... more The Lisan peninsula is about 15 by 25 km . Two well-contrasted zones are distinguished: a triangularshape tableland corresponding to a former “peninsula”, at the time when the Dead Sea was composed of two sub-basins connected by the shallow Lynch strait and a wave-cut platform that emerged from the 1970s. Since the 1980s, the Dead Sea is only constituted by the northern deeper sub-basin.
Second International Conference on Engineering Geophysics, 2013
ABSTRACT Some areas of the United Arab Emirates suffered from subsidence, cavities and related pr... more ABSTRACT Some areas of the United Arab Emirates suffered from subsidence, cavities and related problems,[0]. Subsidence and, in general, surface land deformations and displacement phenomena, typically involve large regions in the geographical meaning. For such regions, in principle, the terrain displacements should be monitored with an accuracy that is in the orders of magnitude smaller than the spatial resolution: one measurement every several meters should bring an accuracy of few centimetres or even millimetres. Not many technologies can nowadays provide such a combination. One of the few is Synthetic Aperture Radar Interferometry, and all related developments, that can, generally, be identified as Advanced Interferometric or Interferometric Stacking techniques. This paper presents one case study in Al-Ain region (UAE) by exploiting Interferometric Stacking techniques to monitor land displacements in the order of few millimetres per year.
This work deals with the creation of a sinkholes database for the Jordanian coast of the Dead Sea... more This work deals with the creation of a sinkholes database for the Jordanian coast of the Dead Sea, Ghor Al Haditha area. Ground collapses inventories were carried out between 1991 and 2012. The lineament is replaced and analyzed in its structural setting at regional and local scales. Its direction (N 24 E) is sub-parallel to the ones displayed by most published focal mechanisms in that zone especially the one associated to the 23rd April 1979 earthquake (Mb = 5.1; N 20 E - 5 deg, Arieh et al 1982), which is representative of all focal mechanisms calculated on a fault plane compatible with the general direction of the Jordan - Dead Sea Transform fault system for the east coast of the Dead Sea area. The alignment of sinkholes is constituted by thirteen minor linear segments separated by as many empty spaces. Their organization suggests the existence of a rotational effect caused by stress between two parallel strike-slip faults. Four minor linear units present an en-echelon arrangement from which one can deduce the presence of a local extensional stress field. In this context, sinkholes locations provide information of subsurface discontinuities interpreted as hidden fractures.
ABSTRACT For several decades, surface water and groundwater located in the closed Dead Sea basin ... more ABSTRACT For several decades, surface water and groundwater located in the closed Dead Sea basin experience excessive exploitation. In fifty years, the level of the terminal lake has fallen by about 30 meters and its surface shrunk by one third. The coastal zone is the one that best shows the stigma of the general environmental degradation. Among these are the sinkholes, landslides and subsidence. For years, these phenomena are relatively well documented, particularly sinkholes and subsidence. Over the past five years, field observations combined with ground deformations measurements by radar interferometric stacking techniques have shown that the intensity (size, frequency) of the collapses is increasing in the most affected part of the southern Dead Sea area. The zones of the dried up Lynch Strait, the Lisan peninsula and Ghor Al Haditha in Jordan seem the most affected. Very high resolution (0.5 to 2 m) GeoEye satellite images have shown that many sinkholes also formed below the level of the Dead Sea. The water transparency allows observations up to several meters deep. These data contribute to the validation of the models developed in connection with the deformation of the fresh/saline water interface due to an imbalance always more pronounced between the levels of the surrounding groundwaters and of the terminal lake.
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