Sökning: "MOHO"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet MOHO.

1. 1. Recovering Moho parameters using gravimetric and seismic data

   Författare :Majid Abrehdary; Lars E. Sjöberg; Mohammad Bagherbandi; Pavel Novák; KTH; []
   Nyckelord :crust; gravity; mantle; Moho depth; non-isostatic effect; residual isostatic topography; stripping; thermal state; Vening Meinesz-Moritz model; Geodesy and Geoinformatics; Geodesi och geoinformatik;

   Sammanfattning : Isostasy is a key concept in geoscience to interpret the state of mass balance between the Earth’s crust and mantle. There are four well-known isostatic models: the classical models of Airy/Heiskanen (A/H), Pratt/Hayford (P/H), and Vening Meinesz (VM) and the modern model of Vening Meinesz-Moritz (VMM). LÄS MER

3. 2. Seismic imaging of deep crustal reflectivity in Sweden and Iceland

   Författare :Niklas Juhojuntti; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geophysics; seismic; reflectivity; Moho; crust; signal; Geofysik; Geophysics; Geofysik; Geofysik med inriktning mot seismologi; Geophysics with specialization in Seismology;

   Sammanfattning : Seismic reflection profiling, originally developed by the petroleum industry, was adapted to systematic imaging of deep structures some 25 years ago. In continental areas, these measurements often show weakly reflective upper crust and strongly reflective lower crust. LÄS MER

4. 3. Analyses of Seismic Wave Conversion in the Crust and Upper Mantle beneath the Baltic Shield

   Författare :Sverker Olsson; Roland Roberts; Hans Thybo; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geophysics; converted waves; Moho; upper mantle; Baltic Shield; tomography; anisotropy; receiver function; Geofysik;

   Sammanfattning : Teleseismic data recorded by broad-band seismic stations in the Swedish National Seismic Network (SNSN) have been used in a suite of studies of seismic wave conversion in order to assess the structure of the crust and upper mantle beneath the Baltic Shield. Signals of seismic waves converted between P and S at seismic discontinuities within the Earth carry information on the velocity contrast at the converting interface, on the depth of conversion and on P and S velocities above this depth. LÄS MER

5. 4. Seismic structure of the central Svecofennian lithosphere

   Författare :Sebastian Buntin; Alireza Malehmir; Christopher Juhlin; Michał Malinowski; Raymond Durrheim; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wide-angle reflection refraction seismic; near-vertical incidence seismic; Moho; crust-mantle boundary; saucer-shaped sill; BABEL; FENNOLORA; UPPLAND; Fennoscandian Shield; Bergslagen; Uppland Batholith; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

   Sammanfattning : Lithospheric structures in the Fennoscandian Shield in Sweden have been studied by a number of large-scale wide-angle seismic reflection/refraction (WARR) and normal-incidence reflection profiles since the 1960s. Among these were the over 2000 km long Fennoscandian Long Range (FENNOLORA) project in 1979 and the Baltic and Bothnian Echoes from the Lithosphere (BABEL) in 1989, which provided valuable images of the subsurface down to over 60 km depth including the Moho. LÄS MER

7. 5. Development and Evaluation of Validity and Utility of the Instrument Assessment of Work Performance (AWP)

   Författare :Jan Sandqvist; Björn Gerdle; Jan Ekholm; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ability; measurement; MOHO; occupational therapy; rehabilitation; vocational; Occupational therapy; Arbetsterapi;

   Sammanfattning : The last decades have shown a great need for vocational rehabilitation due to high levels of absenteeism due to sickness and disability pension. An essential part of the vocational rehabilitation process is assessment of persons with reduced work functioning. LÄS MER