Seismic-reflection identification of Susquehanna River paleochannels on the Mid-Atlantic coastal plain
Alluvial channel ; Aminostratigraphy ; Chronostratigraphy ; Maryland ; Palaeogeography ; Palaeogeomorphology ; Quaternary ; Seismic reflection ; Stratigraphy ; United States of America
In this paper, the AA. demonstrate the use of land-based seismic-reflection profiling in the central Chesapeake Bay region and provide some limited geochronologic control on the seismically defined paleochannel units of the region.
Integration of continuous seismicprofiling in geotechnical investigations off the Belgian coast in Papers.
A comprehensive geotechnical survey for the offshore extention of Zeebrugge harbour illustrates some possibilities and limitations of seismicprofiling in Belgian offshore areas and proves a striking example of its successful integration
The seismic refraction reversed profiling technique has been used to investigate the topography of the last interglacial soil (paléosol S1) within the central Chinese Loess Plateau near Xifeng: variations in the depth. Discussion about the results
High-resolution seismic and ground penetrating radar - Geophysical profiling of a thermokarst lake in the western Lena Delta, northern Siberia
Asian part of Russia ; Delta ; Geophysics ; Lacustrine sediment ; Lake ; Periglacial features ; Permafrost ; Radar ; Seismic method ; Siberia ; Thermokarst
lake and its permafrost margins, while high-resolution seismic data were acquired from the lake during open-water conditions in summer using a Chirp profiler. The combined use of the 2 profiling systems allows stratigraphic profiling in both frozen
High-resolution seismic and ground-penetrating-radar (GPR) data have been acquired over Lake Nikolay in the western Lena Delta in order to study the uppermost basin fill and the bordering frozen margins. GPR measurements were completed on the frozen
of the active Mt. Pettino master extensional fault (hereafter PEF) which controls the tectono-sedimentary evolution of western L’Aquila Basin. The investigations were mainly based on a seismic reflection profile orthogonal to the fault strike in its hangingwall
. The seismicprofile was interpreted by comparison with the geological outcropping data and the stratigraphic analysis of numerous boreholes, several of which reached the pre-Quaternary substratum. The main goals were double : (i) to improve the integrated
Following the April 6 2009 L’Aquila earthquake, a great effort has been carried out for seismic microzonation purposes of urban areas in order to evaluate the seismic potential of the main active faults of the epicentral area. This is the case
geological-geophysical subsurface model for the evaluation of the local seismic amplification and (ii) to estimate the PEF seismic hazard through the study of the sedimentary infill evolution and the tectonic subsidence of the PEF hangingwall which were
strictly interrelated with the PEF seismic history. - (NF)
Profils Sparker mettant en évidence un contact escarpé entre le substratum basaltique et les formations sédimentaires de la plate-forme continentale. Des sédiments récents sont faillés. Le substrat a été localement érodé par les glaciers. (JCB).
Lake-level reconstructions and paleohydrology of Birch Lake, Central Alaska, based on seismic reflection profiles and core transects
Alaska ; C 14 dating ; Cold area ; Holocene ; Insolation ; Lake ; Lake level ; Palaeo-environment ; Palaeoclimate ; Palaeolimnology ; Palaeomagnetism ; Palynology ; Seismic reflection
Lake-level history during the late Pleistocene and Holocene for Birch Lake, Alaska, was reconstructed using seismicprofiles and multiproxy sedimentary analyses including sedimentology, geochemistry, magnetic susceptibility, and palynology
Here two commercially-acquired seismic reflection profiles are used to establish the structure and stratigraphic relationships between the frontal part of the orogenic belt, the foredeep and foreland regions in the offshore continuation
of the Apennine system in the northern Ionian sea. Given the proximity of this study area, the tectono-stratigraphic relationships imaged on these seismic lines are likely to provide good analogues for Neogene basins and depositional systems for much
High-resolution seismic reflection evidence for middle Holocene environmental change, Owasco Lake, New York
Atmospheric circulation ; Climatic variation ; Geophysics ; Holocene ; Lacustrine sediment ; New York State ; Palaeo-environment ; Quaternary ; Seismic reflection ; United States of America
This paper presents new results and interpretations of a recent (1998) decimeter-resolution seismic reflection profile survey of Owasco Lake, one of New York's Finger Lakes. These new data allow for further refinement of the seismic stratigraphy
California ; Marine quaternary ; Sea level ; Seismic method ; Stratigraphy ; Tectonics ; United States
Through analysis of high resolution seismic-reflection profiles, this paper addresses the middle to late Quaternary history of sedimentation of the Ventura shelf and associated glacioeustatic sea level fluctuations, and it constructs a chronology
Contribution to the paleolimnology of lake Valencia, Venezuela: seismic stratigraphy
Les profils de sismique réflexion révèlent une stratigraphie composée de trois unités bien séparées. L'analyse sédimentologique, palynologique et une datation d'une carotte de 7,43m indiquent que la première unité est un dépôt lacustre holocène peu
Stratigraphy of Georges Bank. Bassin: interpreted from seismic correlation to the Western Scotian Shelf
D'après les profils de sismique réflexion, la corrélation de cinq horizons réflecteurs majeurs a été établie entre le S.-W. de la plate-forme de la Scotia et le George Bank. (E. Bonnet).
Application of shallow seismic refraction techniques to coastal geomorphology: a coral reef example
Les techniques de sismique réfraction proches ont un avantage sur les systèmes de profils continus que le milieu marin ou littoral handicape. Leur utilisation est discutée à l'aide d'exemples pris dans la Grande Barrière australienne.
, seismic interpretations of 2 new seismic reflection profiles and borehole logs allow better consolidation of the geometry and evolution of the Tuscan Nappe boudins in this region.