Blar i SINTEF Open på forfatter "O'Sadnick, Megan"
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A Note on Remote Temperature Measurements with DS18B20 Digital Sensors
Petrich, Chris; Sæther, Irina Vasiljeva; Dang, Nga Phuong; Kleven, Øystein; O'Sadnick, Megan (Chapter, 2020)Digital temperature sensors provide an attractive means to conveniently record ice and water temperatures in remote locations. Unlike conventional analogue techniques, a digital sensor performs a physical measurement, ... -
Biotransformation of chemically dispersed diesel at sub-zero temperatures using artificial brines
Dang, Nga Phuong; Petrich, Chris; O'Sadnick, Megan; Toske, Lisa (Peer reviewed; Journal article, 2020)The biotransformation of hydrocarbon compounds in seawater at sub-zero temperature has gained research interest in recent years with the most focus placed on temperatures around 0°C. In this study, biotransformation of ... -
Crude oil migration in sea-ice: Laboratory studies of constraints on oil mobilization and seasonal evolution
Oggier, Marc; Eicken, Hajo; Wilkinson, Jeremy; Petrich, Chris; O'Sadnick, Megan (Journal article; Peer reviewed, 2019)Rising Arctic maritime activities and hydrocarbon development increase the risk of an oil spill in and under Arctic sea-ice. Oil spilled under growing sea ice would be encapsulated within the ice cover. During spring and ... -
Examination of ice reports from vessel traffic along the Norwegian coastline, 2014-2022
O'Sadnick, Megan; Petrich, Chris (Peer reviewed; Journal article, 2023)The Norwegian Coastal Administration provides information on ice conditions for vessels traveling in Norwegian waters primarily from the Swedish border to Kristiansand as well as Kirkenes, a port located in the far north ... -
Experimental and Micro-CT study on the Oil Distribution in laboratory grown Sea Ice
Salomon, Martina Lan; Arntsen, Martin; Dang, Nga Phuong; Maus, Sønke; O'Sadnick, Megan; Petrich, Christian; Schneebeli, Martin; Wiese, Mareike (Peer reviewed; Journal article, 2017)Increasing activities in Arctic waters bare a risk of oil spills under ice-covered conditions and afford sound understanding of the interplay between sea ice and oil. Towards better knowledge, this study focuses on X-ray- ... -
From above and standing atop- two views of Norwegian fjord ice
O'Sadnick, Megan; Petrich, Chris; Brekke, Camilla; Skardhamar, Jofrid (Lecture, 2020) -
Ice Conditions in Beisfjord, Norway from 2021–2023
O'Sadnick, Megan; Petrich, Chris (Peer reviewed; Journal article, 2023)Since 2017, observations of ice conditions have been made in the northern Norwegian fjord, Beisfjord, to better understand the mechanisms of ice formation and variability in ice thickness, crystallography, and properties ... -
Ice conditions in northern Norwegian fjords: Observations and measurements from three winter seasons, 2017–2020
O'Sadnick, Megan; Petrich, Chris; Brekke, Camilla; Skardhamar, Jofrid; Kleven, Øystein (Peer reviewed; Journal article, 2022)Freshwater provided by rivers beginning deep within the mountains, feeds into fjords along the coast of Norway, often forming a brackish surface layer that will change in its salinity, thickness, and extent throughout the ... -
Ice conditions in northern Norwegian fjords: Observations and measurements from three winter seasons, 2017–2020
O'Sadnick, Megan; Petrich, Chris; Brekke, Camilla; Skardhamar, Jofrid; Kleven, Øystein (Peer reviewed; Journal article, 2022)Freshwater provided by rivers beginning deep within the mountains, feeds into fjords along the coast of Norway, often forming a brackish surface layer that will change in its salinity, thickness, and extent throughout the ... -
Ice Formation in Norwegian Fjords – Findings from the 2018 - 2019 Field Season
O'Sadnick, Megan; Petrich, Chris; Kleven, Øystein; Skardhamar, Jofrid; Brekke, Camilla (Chapter, 2020)Understanding ice conditions in fjords is imperative to ensure safe operations and to protect the surrounding environment. Seven fjords in northern Norway were visited in March 2019, six with significant ice cover. In each ... -
In situ field measurements of the temporal evolution of low-frequency sea-ice dielectric properties in relation to temperature, salinity, and microstructure
O'Sadnick, Megan; Ingham, Malcolm; Eicken, Hajo; Pettit, Erin (Peer reviewed; Journal article, 2016)The seasonal evolution of sea-ice microstructure controls key ice properties, including those governing ocean– atmosphere heat and gas exchange, remote-sensing signatures, and the role of the ice cover as a habitat. ... -
Microbial Community Dynamics during Biodegradation of Crude Oil and Its Response to Biostimulation in Svalbard Seawater at Low Temperature
Hiie, Nõlvak; Dang, Nga Phuong; Truu, Marika; Peeb, Angela; Tiirik, Kertu; O'Sadnick, Megan; Truu, Jaak (Peer reviewed; Journal article, 2021)The development of oil exploration activities and an increase in shipping in Arctic areas have increased the risk of oil spills in this cold marine environment. The objective of this experimental study was to assess the ... -
Numerical analysis of ice loads on Taraldsvikfossen dam
Seger, Andreas; Sand, Bjørnar; Arntsen, Bård; Petrich, Chris; O'Sadnick, Megan (Chapter, 2020)Static ice loads (ice actions) are a key design parameter for dams in cold climates. Since 2012,ice stresses have been measured at Taraldsvikfossen reservoir located in Narvik, Norway. Similar to earlier observations in ... -
Static ice loads on a dam in a small Norwegian reservoir
Petrich, Chris; Sæther, Irina Vasiljeva; O'Sadnick, Megan; Arntsen, Bård (Chapter, 2020)Ice loads on a concrete dam have been calculated from stress measurements in Taraldsvikfossen Reservoir, a small reservoir in Narvik, Norway, during three winter seasons. Ice thickness was in the range of 0.5 to 1.0 m, and ... -
Tracking changes in the fjord environment over a winter season using ice bulk salinity and δ18O
O'Sadnick, Megan; Petrich, Chris; Skardhamar, Jofrid (Peer reviewed; Journal article, 2023)Ice that forms in the fjords of northern Norway often undergoes temperature fluctuations, rising above and below freezing, throughout winter and experiences variable conditions at the ice-ocean interface due to changes in ... -
Tracking changes in the fjord environment over a winter season using ice bulk salinity and δ<sup>18</sup>O
O'Sadnick, Megan; Petrich, Chris; Skardhamar, Jofrid (Peer reviewed; Journal article, 2023)