Impact craters are a common geological feature found on a variety of planetary bodies throughout the Solar System and can reveal information about the history of the Solar System and its planets. Specifically, crater ...

Potential field analysis is known to suffer from the problem of "non-uniqueness" in solutions. Gravity data interpretation is a prime example. Anomalous bodies can be detected from the gravity field, but information regarding ...

The principles of signals from vibrators have been investigated over half a century, however such sources are rarely applied in a marine environment. The objective of this thesis is to study the modeling of the pressure ...

Several studies have been conducted since last 50 years to understand the crustal architecture of the passive margins. The conjugate passive margins along Indian Ocean are very less surveyed and studied due to geographical ...

In this this study, receiver function analysis of the crust underneath TROLL seismic station in Queen Maud Land, Antarctica was performed. An analysis of the neighboring seismic station SNAA was carried out as well to ...

This study is a small part of ongoing research for CO2 sequestration at Longyearbyen CO2 Storage Lab, Svalbard, Norway. The primary aim of this study is to determine geomechanical properties of two important caprock units ...

The glacier calving process is poorly documented but closely related to glacier dynamics. Glaciers respond to many factors, such as air temperature or precipitation and can affect calving activity. Accessing calving rate ...

This master thesis in Geophysics is about detecting and attenuating seismic interference noise. The thesis is written in collaboration with the Marine R&D Department at CGG and Department of Geosciences at the University ...

The aim of this work was to compare various dip estimation methods and apply the best of them to identify the dip of seismic interference noise (SI) in the shot domain. Four dip estimation methods were considered: correlation ...

The Eggvin Bank is a shallow area located on the northern segment of Kolbeinsey Ridge. Its crustal structure was investigated along a 301 km long transect from the Greenland Basin to the Iceland Plateau, crossing over the ...

The purpose of this study is to improve the basic understanding of the propagating mechanisms behind seismic interference noise. A Matlab code of the normal mode solution in Pekeris waveguide model was developed and numerical ...

Two wide angle 3-Compnent Ocean Bottom Seismometer (OBS) profiles along with associated Land-Stations acquired during 2003 under the EUROMARGINS Program were analyzed during this M.Sc. Thesis. These profiles are named as ...

Marine Seismic Interference (SI) occurs when several seismic vessels operate in close proximity, and the interfering energy from one vessel is recorded as interfering noise by another. Generally, SI is removed by various ...

In this thesis a new approach, called THEAMTM, is presented. The THEAMTM methodology is a non-invasive tunnel health monitoring method using active seismic. The method incorporates geophysical seismic analysis methods and ...

Shooting in an overlapping fashion is called blended or simultaneous acquisition. This can make acquisition efficient and economical. However, deblending (i.e. the process of separating the blended data) of data can be ...

Scandinavian Mountain Range is located at the continental margin of the Eurasian plate. This area is part of the Baltic shield so topography is expected to be generally low. But this is not the case here. In South western ...

The impact of earthquakes, due to ground shaking, which affects the whole tunnel length from ovaling of the tunnel cross section, is investigated in this thesis. The influence of rock mass quality Q and the tunnel dimension ...

This thesis investigates the application of the Empirical Mode Decomposition (EMD) and Ensemble Empirical Mode Decomposition (EEMD) techniques in de-noising of marine seismic data. EMD decomposes the seismic dataset into ...

Abstract Seismic time migration is a cost and time effective process for imaging of the subsurface. However, the approach is traditionally limited to velocity models with mildly varying lateral variations. The objective ...

I denne oppgaven undersøker vi variasjoner i temperatur og tetthet i litosfæren i Sør Norge og diskuterer de mulige tektoniske betydningene av disse. I den første delen videreutvikles en metode som beregner temperatur og ...

In a 3D marine survey, often large areas of poor coverage (‘coverage holes’) exist caused by feathering during the actual acquisition. Infill management is introduced to fill those ‘coverage holes’, but a high percentage ...

In this thesis we present a three-dimensional (3-D) seismic SV-wave speed model for the upper mantle beneath Northern Europe derived from the analysis of fundamental mode Rayleigh waveforms. Selecting recordings with ...

The aim of this thesis is to investigate and gain better understanding of a new modeling technique called modeling by demigration. Demigration itself can be defined as the inverse of true amplitude migration. This involves ...

Marin seismic acquisition results in signals that are affected by both random and coherent noise. For successful imaging it is important that as much as possible of this noise is attenuated in an early stage of processing. ...

Sea surface profile and reflection coefficient estimates are vital input parameters to various seismic data processing applications. The common assumption of a flat sea surface when processing seismic data can lead to ...