Results 21 to 30 of about 732,533 (207)

Radiocarbon in annual coral rings of Florida [PDF]

Geophysical Research Letters, 1978
Radiocarbon measurements on a 175‐year (A.D. 1800 to 1974) growth of the coral Montastrea annularis from The Rocks reef off the Florida Keys reveal the rate of local uptake of fossil fuel CO2 and bomb 14C by surface ocean waters of the Gulf Stream. In the nineteenth century, the pre‐bomb, pre‐industrial Δ14C value of surface ocean waters as seen in ...
Druffel, Ellen M, Linick, Timothy W
openaire   +3 more sources

Vertical variability of selected macrostructural properties of juvenile wood organization in trunks of Scots pine (Pinus sylvestris L.) trees

Acta Societatis Botanicorum Poloniae, 2011
The study makes an attempt to analyse the width of annual rings, the width of the latewood zone and the proportion of the latewood within juvenile wood along trunks of Scots pine (Pinus sylvestris L.) trees and to verify the hypothesis about the ...
Arkadiusz Tomczak, Witold Pozdrowski, Tomasz Jelonek, Ireneusz Stypuła   +3 more
doaj   +1 more source

Physics of Ultra-Peripheral Nuclear Collisions [PDF]

, 2005
Moving highly-charged ions carry strong electromagnetic fields that act as a field of photons. In collisions at large impact parameters, hadronic interactions are not possible, and the ions interact through photon-ion and photon-photon collisions known ...
Baur G, Bertulani CA, Bertulani CA, Carlos A. Bertulani, Clayton DD, Crittenden JA, Eggert K, Eichler J, Glauber RJ, Grammer G, Ivanov DY, Schiller A, Jackson JD, Joakim Nystrand, Landau LD, Nemenov LL, Nishina Y, Rolfs C, S. Eidelman, Sapirstein J, Spencer R. Klein, Steinwedel H   +20 more
core   +2 more sources

Directional variance analysis of annual rings

Journal of Physics: Conference Series, 2010
The wood quality measurement methods are of increasing importance in the wood industry. The goal is to produce more high quality products with higher marketing value than is produced today. One of the key factors for increasing the market value is to provide better measurements for increased information to support the decisions made later in the ...
P Kumpulainen, K Marjanen
openaire   +1 more source

The climate sensitivity of Norway spruce [Picea abies (L.) Karst.] in the southeastern European Alps [PDF]

, 2009
Tree ring chronologies were developed from trees growing at two sites in Slovenia which differed in their ecological and climatological characteristics.
B Schmidt, C Sander, D Eckstein, D Frank, D McCarroll, D McCarroll, D McCarroll, D McCarroll, Danny McCarroll, EK Wolter, ER Cook, ER Cook, ER Cook, ER Cook, ER Wahl, F Lindner, FH Schweingruber, FH Schweingruber, FH Schweingruber, H Mäkinen, H Mäkinen, H Salminen, HC Fritts, HD Grissino-Mayer, I Robertson, Iain Robertson, J Gričar, J Jakša, Jožica Gričar, K Čufar, KR Briffa, KT Rinne, M Gagen, M Gagen, M Gagen, M Reichstein, M Stanovnik, Mary Gagen, MGL Baillie, National Research Council, Neil J. Loader, NJ Loader, NJ Loader, P Pichler, Primož Oven, R Jalkanen, R Jalkanen, Risto Jalkanen, RL Holmes, S Rossi, T Kurkela, TML Wigley, Tom Levanič, W Gindl   +53 more
core   +1 more source

Arctic tree rings as recorders of variations in light availability [PDF]

, 2014
Annual growth ring variations in Arctic trees are often used to reconstruct surface temperature. In general, however, the growth of Arctic vegetation is limited both by temperature and light availability, suggesting that variations in atmospheric ...
Huybers, P., Stine, A. R.
core   +1 more source

Monthly paleostreamflow reconstruction from annual tree-ring chronologies

Journal of Hydrology, 2018
Abstract Paleoclimate reconstructions are increasingly used to characterize annual climate variability prior to the instrumental record, to improve estimates of climate extremes, and to provide a baseline for climate-change projections. To date, paleoclimate records have seen limited engineering use to estimate hydrologic risks because water systems ...
Stagge, James H., Rosenberg, David E., DeRose, R. J., Rittenour, Tammy M.   +3 more
openaire   +4 more sources

Dendroecology of Macrolobium acaciifolium (Fabaceae) in Central Amazonian floodplain forests [PDF]

Acta Amazonica, 2018
The forest dynamics in the Amazonian floodplains is strongly triggered by the flood pulse. Trees respond to unfavorable growth conditions during the flood period by cambial dormancy, which results in the formation of annual growth rings.
Eliane Silva BATISTA, Jochen SCHÖNGART
doaj   +1 more source

Local variance of atmospheric 14C concentrations around Fukushima Dai-ichi Nuclear Power Plant from 2010 to 2012 [PDF]

, 2017
Radiocarbon (14C) has been measured in single tree ring samples collected from the southwest of the Fukushima Dai-ichi Nuclear Power Plant. Our data indicate south-westwards dispersion of radiocarbon and the highest 14C activity observed so far in the ...
Chen, Biying, Cook, Gordon T., Freeman, Stewart P.H.T., Hou, Xiaolin, Liu, Cong-Qiang, Naysmith, Philip, Xu, Sheng, Yamaguchi, Katsuhiko   +7 more
core   +2 more sources

The use of X-ray method to study annual growth variation of Pinus eldarica [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2013
Using non-destructive methods to study forest productivity and wood quality as well as annual growth variations deserve special importance. In this regard annual growth changes of Pinus eldarica include width of the spring and summer rings and percentage
Saeid Mehrabi
doaj   +1 more source