Geometric parameters of shoreface profiles of Laptev Sea erosion coast (Table 1) ...

• Main Authors: Are, Felix, Grigoriev, Mikhail N, Hubberten, Hans-Wolfgang, Rachold, Volker, Razumov, Sergey O, Schneider, Waldemar
• Format: Dataset
• Language: English
• Published: PANGAEA 2002
• Subjects: LATITUDE; LONGITUDE; Lithology/composition/facies; Area/locality; Inclination; Shoreface depth; Width; Visual description; Measured; Laptev Sea System LSS; laptev; Laptev Sea; lena river
• Online Access: https://dx.doi.org/10.1594/pangaea.425282; https://doi.pangaea.de/10.1594/PANGAEA.425282

Field investigations of the Laptev Sea shoreface morphology were carried out (1) off erosional shores composed of unconsolidated sediments, (2) off the modern delta shores of the Lena River, and (3) off rocky shores.It was found that profiles off erosional shores had a concave shape. This shape is not well described by commonly applied power functions, a feature, which is in disagreement with the generally accepted concept of the equilibrium shape of shoreface profiles. The position of the lower shoreface boundary is determined by the elevation of the coastal lowland inundated during the last transgression (at -5 to -10 m) and may easily be recognized by a sharp, an order of magnitude decrease in the mean inclination of the sea floor. The mean shoreface inclination depends on sediment grain-size and ranges from 0.0022 to 0.033. The concave shape of the shoreface did not change substantially during the last 20-30 years, which indicates that shoreline retreat did not slow down and hence suggests continued ... : Supplement to: Are, Felix; Grigoriev, Mikhail N; Hubberten, Hans-Wolfgang; Rachold, Volker; Razumov, Sergey O; Schneider, Waldemar (2002): Comparative shoreface evolution along the Laptev Sea coast. Polarforschung, 70, 135-150 ...