Browsing NTNU Open by Author "Grootes, Pieter Meiert"

Now showing items 1-7 of 7

    • 2500 years of anthropogenic and climatic landscape transformation in the Stymphalia polje, Greece 

      Seguin, Joana; Bintliff, John L; Grootes, Pieter Meiert; Bauersachs, Thorsten; Dörfler, Walter; Heymann, Christian; Manning, Sturt W.; Müller, Samuel; Nadeau, Marie-Josée; Nelle, Oliver; Steier, Peter; Weber, Jan; Wild, Eva-Maria; Zagana, Eleni; Unkel, Ingmar (Peer reviewed; Journal article, 2019)
      Lacustrine sediments generally record landscape development in the lake's catchment area controlled by palaeoclimatic and human induced changes. To improve our understanding on the anthropogenic and climatic influences on ...

    • Earthworms, Darwin and prehistoric agriculture-Chernozem genesis reconsidered 

      Dreibrodt, Stefan; Hofmann, Robert; Dal Corso, Marta; Bork, Hans-Rudolf; Duttmann, Rainer; Martini, Sarah J.; Saggau, Philipp; Schwark, Lorenz; Shatilo, Liudmyla; Videiko, Michail; Nadeau, Marie-Josée; Grootes, Pieter Meiert; Kirleis, Wiebke; Müller, Johannes (Peer reviewed; Journal article, 2021)
      Chernozems are among the most fertile agricultural soils on Earth and are important terrestrial carbon reservoirs. Since the Miocene-advent of grassland-ecosystems, they develop on fine-grained calcareous parent materials, ...

    • HESSEL de VRIES: RADIOCARBON PIONEER from GRONINGEN 

      Grootes, Pieter Meiert; Van Der Plicht, Hans (Journal article; Peer reviewed, 2021)
      Hessel de Vries contributed to radiocarbon (14C) dating for only one short decade. Yet, his development of proportional CO2 counting greatly facilitated 14C measurements, improved their reproducibility, and lowered both ...

    • 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 ...

    • RADIOCARBON STEP-COMBUSTION OXIDATION METHOD and FTIR ANALYSIS of TRONDHEIM CaCO<inf>3</inf>PRECIPITATES of ATMOSPHERIC CO<inf>2</inf>SAMPLES: FURTHER INVESTIGATIONS and INSIGHTS 

      Santos, Guaciara M.; Leong, Christopher A.; Grootes, Pieter Meiert; Seiler, Martin Thomas; Svarva, Helene Løvstrand; Nadeau, Marie-Josee (Journal article; Peer reviewed, 2023)
      Eight atmospheric carbon dioxide samples (as calcium carbonate—CaCO3—precipitates) from Lindesnes site (58ºN, 7ºE), belonging to 1963 and 1980 (four samples from each year) and stored at the National Laboratory for Age ...

    • 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 ...