The spring phytoplankton bloom is a characteristic feature of mid-high latitudes in modern times, but can be challenging to identify in palaeo records. In the current study, we investigated the absolute and relative distributions of two diatom-derived tri-unsaturated highly branched isoprenoid (HBI) lipids, at least one of which has previously been suggested to be a possible proxy for the productive ...

Denne studien belyser krisehåndteringen i Troms politidistrikt underveis og i etterkant av den tragiske skredulykken 2. januar 2019 ved Blåbærtinden i Tamokdalen. Fire utenlandske skiturister omkom i snøskredet. Slike ulykker kan føre til kritikk mot myndighetene både underveis og i etterkant. For politiet var dette en krevende operasjon. De hadde ansvaret både for redningsaksjonen og krisekommunikasjonen ...

The world is changing. Some things get better while others get worse. We live in a vulnerable society and societal safety is something that both occupy most of us and is a safety factor in our everyday life. The authorities are responsible for societal safety, but it is also a responsibility for each of us to create common safety and an individual sense of security. The societal safety work is ...

Denne masteroppgaven har sin hensikt å belyse sentrale forhold i et samvirke som fremmer og hemmer delt situasjonsforståelse mellom innsatsledere. Ved større samvirkehendelser er nødetatene gjensidig avhengig av hverandre for å oppnå en god oppdragsløsning. Jeg har valgt å se nærmere på innsatsledere i nødetatene og forholdene knyttet til organisasjonsstruktur og kultur, innsatsledernes opplæring, ...

Norgeshistorien er full av større naturhendelser, ulykker og kriser, det være seg både samfunns- og menneskeskapte. Vi ser at fokuset på disse har økt i nyere tid, særlig etter terrorangrepene i regjeringskvartalet og på Utøya 22. Juli 2011. Forberedelsene for å unngå slike hendelser, håndtere de dersom de skulle inntreffe og gjenoppreise samfunnet i etterkant, er en oppgave som jobbes med både ...

For dengue fever and other seasonal epidemics we show how the stability of the preceding inter-outbreak period can predict subsequent total outbreak magnitude, and that a feasible stability metric can be computed from incidence data alone. As an observable of a dynamical system, incidence data contains information about the underlying mechanisms: climatic drivers, changing serotype pools, the ecology ...

Large national programs in the United States and several Asian countries have defined and characterised their marine methane hydrate occurrences in some detail, but European hydrate occurrence has received less attention. The European Union-funded project “Marine gas hydrate – an indigenous resource of natural gas for Europe” (MIGRATE) aimed to determine the European potential inventory of exploitable ...

Grain growth of quartz was investigated using two quartz samples (powder and novaculite) with water under pressure and temperature conditions of 1.0–2.5 GPa and 800–1100 ∘C. The compacted powder preserved a substantial porosity, which caused a slower grain growth than in the novaculite. We assumed a grain growth law of <i>dⁿ−dⁿ₀=k</i>₀<i>f^r<su ...

Methane (CH4) in marine sediments has the potential to contribute to changes in the ocean and climate system. Physical and biochemical processes that are difficult to quantify with current standard methods such as acoustic surveys and discrete sampling govern the distribution of dissolved CH4 in oceans and lakes. Detailed observations of aquatic CH4 concentrations are required for a better understanding ...

Distributed renewable generation and power flow control are promising tech- nologies for increasing power system efficiency. Renewable energy production close to consumption reduces need for transport of power to these locations. The benefits of reactive flow control are well documented, and in recent years the use of energy storage for active power control has increased in relevance. The power ...