Results 101 to 110 of about 6,413 (228)

Analyses and comparisons of 7Be, 210Pb and activity ratio 7Be/210Pb with ozone observations at two GAW stations from high mountains

, 2007
Simultaneous measurements of 7Be and 210Pb and the analyses of activity ratio, i.e., 7Be/210Pb, offer another useful analytical tool for improving our understanding of ozone changes occurring at high altitude because they can provide diagnostic ...
X. Zheng, TOSITTI, LAURA, P. Bonasoni, H. N. Lee   +3 more
core   +1 more source

210Pb and 230Th in settling particles in the western Northwest Pacific Ocean: Particle flux and scavenging

, 2007
A mooring of three conical time-series sediment traps was deployed at two sites in the western Northwest Pacific Ocean for nine months. Total mass fluxes and activities of 210Pb and 230Th were determined for the settling particles to elucidate their ...
山田 正俊, 446109, 鄭 建, 446110, 446111, Zheng, Jian, Yamada, Masatoshi, 446112   +7 more
core   +1 more source

High-resolution decadal-scale eruption age dating of young oceanic basalts at an active hydrothermal vent site

Frontiers in Geochemistry
Here we report (210Pb/226Ra), (226Ra/230Th), (230Th/238U) and (234U/238U) disequilibria for eleven lavas from the ABE vent site in the Lau Basin. Most ABE lavas have (210Pb/226Ra) > 1 and (226Ra/230Th) > 3. These results indicate that most of these
Kenneth W. W. Sims, Lisa B. Kant, Gregory J. Stark, Mark K. Reagan, Jeff J. Standish, Charles H. Langmuir   +5 more
doaj   +1 more source

One-dimensional mass budget of 210Pb in the western Northwest Pacific Ocean

, 2007
210Pb is a naturally occurring radionuclide with a half-life of 22.3 years; its significant sources for seawaters are atmospheric input and in situ production by decay of 226Ra.
675911, 675910, 675913, 675912, 山田 正俊, 鄭 建, Zheng, Jian, Yamada, Masatoshi   +7 more
core  

Badanie rozkładu stężeń 210Po i 210Pb w mchach i porostach. [PDF]

, 2015
W ramach badań dokonano analizy rozkładu stężeń dwóch radionuklidów 210Pb i 210Po w wybranych biomarkerach: mchach Pleurozium schreberi, Polytrichum commune i porostach z gatunku Hypogymnia physodes.
Długosz-Lisiecka, Magdalena, Wróbel, Justyna   +1 more
core  

Deep-Ocean Water Disequilibrium 210po-210pb-226ra: A Global Review Of Research Over Six Decades

, 2022
Disequilibria between long-lived parents and short-lived particle-reactive daughters has been extensively used over the past six decades as tracers and chronometers in aquatic system.
Planaj, Denada
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Analysis of 210Pb in water samples with plastic scintillation resins

, 2016
210Pb is a radioactive lead isotope present in the environment as member of the 238U decay chain. Since it is a relatively long-lived radionuclide (T1/2 = 22.2 years), its analysis is of interest in radiation protection and the geochronology of sediments
Lluch, E., García, J. F.,, Bagan Navarro, Hector,, García, J. F., Tarancón, A., Lluch, E.,, Lund University., Bagan Navarro, Hector, Barrera, J.,, Barrera, J., Tarancón, A.,   +10 more
core   +1 more source

210Pb based age model of sediment core CM_MC

, 2017
210Pb based age model of sediment core ...
Johnson, Thomas C, Sergei Katsev (641173), Hecky, Robert E, Katsev, Sergei, Reavie, Euan D, Robert E Hecky (8018966), Thomas C Johnson (8018969), Molly D O'Beirne (8018963), O'Beirne, Molly D, Euan D Reavie (6958112), Josef P Werne (6967337), Werne, Josef P   +11 more
core   +1 more source

Modelling mass accumulation rates and 210Pb rain rates in the Skagerrak: lateral sediment transport dominates the sediment input

Frontiers in Marine Science
Sediment fluxes to the seafloor govern the fate of elements and compounds in the ocean and serve as a prerequisite for research on elemental cycling, benthic processes and sediment management strategies.
Timo Spiegel, Markus Diesing, Andrew W. Dale, Nina Lenz, Mark Schmidt, Stefan Sommer, Christoph Böttner, Michael Fuhr, Habeeb Thanveer Kalapurakkal, Cosima-S. Schulze, Klaus Wallmann   +10 more
doaj   +1 more source

Transfer analysis of 210Po and 210Pb in the terrestrial environment [PDF]

, 2013
The transfer of 210Po and 210Pb between various compartments in the terrestrial environment has been analysed by using various published data. The average activity concentration of 210Po in soil is 61 ± 14 Bq.kg-1 d.w.
Persson, Bertil R
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