Blar i NTNU Open på forfatter "Værnes, Einar"

Viser treff 1-5 av 5

    • Ferskvannsbiologiske undersøkelser i Samsjøen, Holtsjøen, Samaelva og Søavassdraget, Sør-Trøndelag, i 2017 

      Davidsen, Jan Grimsrud; Sjursen, Aslak Darre; Davidsen, Anette Sophie Grimsrud; Kjærstad, Gaute; Rønning, Lars; Daverdin, Marc; Værnes, Einar; Hårsaker, Karstein; Arnekleiv, Jo Vegar (NTNU Vitenskapsmuseet naturhistorisk rapport;, Research report, 2018)

    • First 10Be measurements at Trondheim 1 MV AMS 

      Seiler, Martin; Anjar, Johanna; Værnes, Einar; Nadeau, Marie-Josée; Scognamiglio, Grazia (Journal article; Peer reviewed, 2018)
      The performance of the Trondheim 1 MV AMS system for 10Be measurements has been investigated. While the initial acceptance tests were done using the 1 + 1+ charge state, we concluded that the 2 + 2+ charge state offers ...

    • Radiocarbon calibration around AD 1900 from Scots pine (Pinus sylvestris) tree rings from northern Norway 

      Svarva, Helene Løvstrand; Grootes, Pieter Meiert; Seiler, Martin; Thun, Terje; Værnes, Einar; Nadeau, Marie-Josée (Journal article; Peer reviewed, 2019)
      To resolve an inconsistency around AD 1895 between radiocarbon (14C) measurements on oak from the British Isles and Douglas fir and Sitka spruce from the Pacific Northwest, USA, we measured the 14C content in single-year ...

    • Status Report of the Trondheim Radiocarbon Laboratory 

      Seiler, Martin; Grootes, Pieter Meiert; Haarsaker, John Øystein; Lelu, Sylvie; Rzadeczka-Juga, Izabela; Stene, Sølvi; Svarva, Helene Løvstrand; Thun, Terje; Værnes, Einar; Nadeau, Marie-Josée (Journal article; Peer reviewed, 2019)
      The Trondheim radiocarbon (14C) laboratory has evolved from a traditional radiocarbon decay counting laboratory to an accelerator mass spectrometry (AMS) facility primarily measuring 14C. This evolution required adjustments ...

    • The 1953-1965 rise in atmospheric bomb 14C in central Norway 

      Svarva, Helene Løvstrand; Grootes, Pieter Meiert; Seiler, Martin; Stene, Sølvi; Thun, Terje; Værnes, Einar; Nadeau, Marie-Josée (Journal article; Peer reviewed, 2019)
      Sub-annual measurements, eight increments per year, of cellulose in a Scots pine tree growing in central Norway are presented as a proxy for tropospheric 14CO2 at biweekly to monthly resolution. The results are validated ...