Browsing Institutt for bygg- og miljøteknikk by Subject "Geodesy"
Now showing items 1-10 of 10
-
Correlation Analysis of Multipath Effects in GPS-Code and Carrier Phase Observations
(Peer reviewed; Journal article, 2010)Multipath error is a limiting factor for successful ambiguity resolution in precise real-time kinematic GPS positioning, both in the carrier phase and pseudorange measurements. Understanding the temporal characteristics ... -
Geoid-type surface determination using a gravimetric quasigeoid model and GNSS/leveling data- A case study in eastern Norway
(Peer reviewed; Journal article, 2013)Norway is about to realize a new vertical datum NN2000, which is supposed to replace the present datum NN1954. Norwegian Mapping Authority (NMA) is also realizing a new geodetic reference frame ITRF09, with focus mainly ... -
Greenland ice-melt spread into Northwest Coast revealed by GRACE (GRACE data viser at issmeltingen på Grønland sprer seg til nordvestkysten)
(Peer reviewed; Journal article, 2012)We examine the extent and magnitude of Greenland ice sheet surface melting between 2002 and 2010. We show that the well documented Greenland ice mass loss in the southern region spread to northwest Greenland in the period ... -
Mass balance and mass loss acceleration of the Greenland ice sheet (2002 – 2011) from GRACE gravity data
(Journal article; Peer reviewed, 2012)We examine the magnitude and acceleration of the Greenland ice sheet mass loss between 2002 and 2011. We use monthly observations of time-variable gravity from the Gravity Recovery and Climate Experiment (GRACE) satellite ... -
Mass loss of the Greenland ice sheet from GRACE time-variable gravity measurements
(Peer reviewed; Journal article, 2012)The Gravity Recovery and Climate Experiment (GRACE) satellite data is used to estimate the rate of ice mass variability over Greenland. To do this, monthly GRACE level 2 Release-04 (RL04) data from three different processing ... -
Mean Sea Surface and ocean circulation in North Atlantic and the Arctic Sea
(Journal article; Peer reviewed, 2011)High resolution Mean Sea Surface (MSS) model and its error estimation over the study region (56°N -
Ocean Wave Measurement Using GPS Buoys
(Journal article; Peer reviewed, 2013)The observation of ocean wave parameters is necessary to improve forecasts of ocean wave conditions. In this paper, we investigate the viability of using a single GPS receiver to measure ocean-surface waves, and present a ... -
Seasonal variation analysis of Greenland ice mass time-series
(Journal article; Peer reviewed, 2017)We derive the mass balance of Greenland ice sheet from the Gravity Recovery and Climate Experiment (GRACE) for the period January 2003–October 2014. We have found an ice mass loss with peak amplitude of −15 cm/yr in the ... -
Steric sea level changes from ENVISAT and GRACE in the Nordic Seas
(Peer reviewed; Journal article, 2013)Steric sea level changes are estimated over the Nordic Seas using ENVISAT (Environmental Satellite) altimetry and GRACE (Gravity Recovery and Climate Experiment) gravity data. We have used altimetry data from the ENVISAT ... -
Updated OCTAS geoid in the northern North Atlantic - OCTAS07
(Peer reviewed; Journal article, 2008)A new gravimetric geoid (OCTAS07v2) is generated using Stokes’ formula with gravity data as input. As local gravity data, a combination of land gravity data, new and old airborne gravity data, and adjusted marine gravity ...