High-resolution controlled-source seismic tomography across the Middle Aterno basin in the epicentral area of the 2009, Mw 6.3, L’Aquila earthquake (central Apennines, Italy)
Seismic data have been collected along 4 dense wide-aperture profiles, that run SW-NE for a total length of ~6 km in the hangingwall of the Paganica-S. Demetrio Fault, source of the 6th April 2009 L’Aquila normal-faulting earthquake. Seismic
. In the Paganica area, Vp images unravel large steps in the substratum related to 2 unreported SW-dipping buried strands, synthetic to the Paganica Fault, with ~250 m associated total vertical throw. This finding has important implications on the long-term history
of the Paganica- S. Demetrio Fault system, whose total vertical displacement has been previously underestimated. An additional ~250 m vertical offset along this complex Quaternary extensional structure should therefore be considered. - (NF)
Vertikale Profile des Windvektors und des Turbulenzkoeffizienten in einer (quasistationären) planetarischen Grenzschicht mit freier Inversion. (Verticalprofiles of the wind vector and the turbulence coefficient in a (quasi-stationary) planetary
Atmosphère ; Coefficient de turbulence ; Couche limite ; Dynamique de l'atmosphère ; Géographie physique ; Profilvertical ; Stabilité verticale ; Turbulence ; Vecteur du vent ; Vent
Verticalprofiles of the wind vector and the turbulent coefficient (eddy viscosity) are discussed. Further empirically determined (observed) verticalprofiles (especially of the turbulent coefficient) are compared with corresponding vertical
Three-dimensionality, longitudinal profile setting, and paleo-discharge capacity of incised valleys in recent stratigraphy of the Sunda Shelf, Indonesia
Indonésie ; Lit fluvial ; Mouvement vertical ; Niveau marin ; Paléogéographie ; Paléohydrologie ; Paléovallée ; Plate-forme continentale ; Profil longitudinal ; Selat Sunda ; Sismique ; Stratigraphie
Continental shelf ; Indonesia ; Longitudinal section ; Palaeogeography ; Palaeohydrology ; Palaeovalley ; River bed ; Sea level ; Seismic method ; Stratigraphy ; Vertical movement
Cauce ; Estratigrafía ; Indonesia ; Movimiento vertical ; Nivel del mar ; Paleogeografía ; Paleohidrología ; Paleovalle ; Perfil longitudinal ; Plataforma continental ; Sísmica
The Sunda Shelf of Indonesia is a key physiographic link between the South China Sea and the Indian Ocean. The goals of this paper are to : 1) demonstrate methodologies for calculating hydrologic parameters from seismically interpreted channelforms
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
Verticalprofiles of the horizontal mass flux of blown sand are investigated experimentally using a passive vertical array in a wind tunnel. This investigation is complemented by the measurements of the longitudinal profiles of mass flux using
a horizontal sand trap. The experiments were conducted with 2 test sands and 5 different stream velocities. A simple equation applicable for both the vertical and the longitudinal sand mass flux variations is introduced and the parameters are estimated from
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
Geomorphological evolution of longitudinal river profiles in the Carpathians
Carpates ; Concavité ; Cours d'eau ; Géométrie hydraulique ; Modèle mathématique ; Montagne ; Mouvement vertical ; Profil longitudinal ; Roumanie ; Réseau de drainage ; Tectonique
Carpathian Mountains ; Channel geometry ; Drainage network ; Longitudinal section ; Mathematical model ; Mountain ; Romania ; Stream ; Tectonics ; Vertical movement
In this paper, attention is focused on the concavity of the stream profile. On this basis, the AA. tried to determine the evolution of some Eastern Carpathian rivers of Romania and thus estimate their long-term evolutionary tendencies
. They demonstrate that age has no influence on the form of the longitudinal profiles for the rivers on the exterior side of the Carpathians. This is because tectonic uplift was important, and this phenomenon is still present today.
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