Now showing items 1-10 of 111
Cenozoic Erosion of the Barents Sea Shelf, Norwegian Arctic: A Review
(Conference object; Konferansebidrag, 2018-12)
The circum North Atlantic-Arctic continental margin and adjacent land areas have experienced several episodes of uplift and erosion during the Cenozoic. A series of efforts quantifying this erosion for the Barents Sea shelf, where the Arctic shelf is at its widest and deepest have been done since the early 90’s using different methods. As the seismic and well database have expanded considerably, ...
Multi-frequency polarimetric SAR signatures of lead sea ice and oil spills
(Journal article; Tidsskriftartikkel; Peer reviewed; Conference object; Konferansebidrag, 2017-12-04)
Synthetic aperture radar is used to identify and monitor oil spills. Separation from oil spill look-alikes is an important part of a fully automatic oil spill detection scheme. Here we investigate the polarimetric signatures for oil spills and newly formed sea ice (a well-known look-alike) in fully polarimetric Radarsat-2 satellite scenes. Using the fully polarimetric scenes we calculate four different ...
MOSIDEO/CIRFA Tank Experiments on Behavior and Detection of Oil in Ice
(Journal article; Tidsskriftartikkel; Peer reviewed; Conference object; Konferansebidrag, 2019-06)
In the Arctic, presence of sea ice presents a challenge to safe and sustainable operations. To optimize planning and minimize impact of inadvertent oil spills, oil-in-ice experiments were performed at the HSVA Arctic Environmental Test Basin (AETB) from 14 March to 4 April 2017. Following an under-ice spill and simulated springtime warming, the microscopic movement and distribution of oil in the sea ...
Stochastic modeling of scrape-off layer fluctuations
(Conference object; Konferansebidrag, 2017-08-24)
1. Stochastic model of data time series <br> 2. Comparison to experimental measurements
Time Series Investigation of Land Subsidence Using a Weighted Least Squares Adjustment Based on Image Mode Interferometric Data
(Conference object; Konferansebidrag, 2010)
This study presents the weighted least squares method based on Interferometric Synthetic Aperture Radar (InSAR) images to retrieve spatial-temporal evolution of land subsidence in Mashhad Valley, northeast Iran. Using the analysis of a few interferograms covering the 2003-2005 period, Motagh et al (GJI 2006) presented a preliminary analysis of the subsidence in this area. Here we extend this study ...
Infrared Detection for Anti-Icing Systems in Ship Operations
(Conference object; Konferansebidrag, 2014)
Studies of DC biasing of internal ring on plasma rotation and transport in a toroidal geometry
(Conference object; Konferansebidrag, 2004-10)
We report results from experiments performed to study how a DC bias with respect to the plasma potential is affecting the plasma states in the toroidal geometry of the Blaamann device in Tromso. In the experiments discussed here, a ring with smaller diameter than the limiter was centered inside the bulk of the plasma and its bias varied with respect to the plasma potential. In the electron ...
An Advanced Non-Gaussian Feature Space Method for POL-SAR Image Segmentation
(Conference object; Konferansebidrag, 2013)
This work extends upon our simple feature-based multichannel SAR segmentation method to incorporate highly desirable statistical properties into a computationally simple approach. The desirable properties include Markov random field contextual smoothing and goodness-of-fit testing to automatically obtain the significant number of classes. To achieve this we need to find an explicit class model to ...
USE OF EISCAT 3D FOR OBSERVATIONS OF SPACE DEBRIS
(Peer reviewed; Conference object; Konferansebidrag, 2017-06)
We investigate the capabilities of the next generation ionospheric research radar EISCAT 3D (E3D) for observations of space objects. The radar is multi-static, and is therefore capable of observing instantaneous threedimensional vector velocity and position by observing round-trip delay and Doppler shift between the transmitter and three receiver sites. The radar is to be located in Northern ...
Temperature and thermal emission of cosmic dust in the vicinity of the Sun, Vega and Fomalhaut.
(Conference object; Konferansebidrag, 2018)