Boaz Luz

McMaster University

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Eugeni Barkan

Hebrew University of Jerusalem

Yehoshua Kolodny

Hebrew University of Jerusalem

Amaëlle Landais

Laboratoire des Sciences du Climat et de l'Environnement

Aaron Kaplan

Hebrew University of Jerusalem

Alon Angert

Hebrew University of Jerusalem

Ahuva Almogi‐Labin

Geological Survey of Israel

Dan Tchernov

University of Haifa

Israela Musan

Hebrew University of Jerusalem

Leonora Reinhold

Hebrew University of Jerusalem

Alexey Ekaykin

Arctic and Antarctic Research Institute

Cooperative Institutions

Hebrew University of Jerusalem

Centre National de la Recherche Scientifique

Weizmann Institute of Science

Columbia University

Lamont-Doherty Earth Observatory

Xi'an Jiaotong University

Université de Versailles Saint-Quentin-en-Yvelines

Laboratoire des Sciences du Climat et de l'Environnement

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Geological Survey of Israel

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Fractionation of oxygen isotopes by root respiration: Implications for the isotopic composition of atmospheric O2

Geochimica et Cosmochimica Acta (2001)

Alon Angert Boaz Luz

δ18O

Oxygen-18

10.1016/s0016-7037(01)00567-1

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Citations (45)

Palaeo-oceanography of the post-glacial Eastern Mediterranean

Nature (1979)

Boaz Luz

Sapropel

Mesopelagic zone

Oxygen minimum zone

Circumpolar deep water

δ18O

10.1038/278847a0

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Citations (38)

The Significance of Diffusion Limitation for Oxygen Isotope Fractionation in Soil Respiration

AGU Spring Meeting Abstracts (2001)

Alon Angert Boaz Luz

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Stable oxygen isotopes in hydrology

Geochimica et Cosmochimica Acta Supplement (2009)

Boaz Luz

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Isotopic and Mineralogical Records from Late Pleistocene Sediments of the North Red Sea

Routledge eBooks (2022)

Boaz Luz

The ẟ18O records of cores from the Northernmost Red Sea and the Gulf of Aqaba display large fluctuations in the order of 5‰. The records are very similar and correlate well with those obtained from open ocean cores. The amplitude in the Red Sea is larger and is attributed to sea level effect on the rate of water exchange in Bab El Mandeb Straits. The ẟ18O record from the Gulf of Aqaba shows much detail and it seems that it reflects even relatively small sea level fluctuations of the last 100 000 years.

10.1201/9780203744512-6

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Isotope signatures in phosphate deposits: Formation and diagenetic history

Springer eBooks (2005)

Yehoshua Kolodny Boaz Luz

10.1007/bfb0009862

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Diffusivity fractionations of HO/HO and HO/HO in air and their implications for isotope hydrology

Rapid Communications in Mass Spectrometry (2007)

Eugeni Barkan Boaz Luz

We have determined the isotope effects of (17)O and (18)O substitution of (16)O in H(2)O on molecular diffusivities of water vapor in air by the use of evaporation experiments. The derived diffusion fractionation coefficients (17)alpha(diff) and (18)alpha(diff) are 1.0146 +/- 0.0002 and 1.0283 +/- 0.0003, respectively. We also determined, for the first time, the ratio ln((17)alpha(diff))/ln((18)alpha(diff)) as 0.5185 +/- 0.0002. This ratio, which is in excellent agreement with the theoretical value of 0.5184, is significantly smaller than the ratio in vapor-liquid equilibrium (0.529). We show how this new experimental information gives rise to (17)O excess in meteoric water, and how it can be applied in isotope hydrology.

Kinetic isotope effect

10.1002/rcm.3180

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Citations (242)

The reconstruction of sea surface temperatures in the Pacific Ocean of 18,000 B.P.

Marine Micropaleontology (1980)

Theodore C. Moore Lloyd H. Burckle Kurt R. Geitzenauer Boaz Luz Adolfo Molina‐Cruz

Subarctic climate

Seasonality

10.1016/0377-8398(80)90012-2

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Citations (158)

Oxygen isotope fractionation in the ocean surface and¹⁸O/¹⁶O of atmospheric O₂

Global Biogeochemical Cycles (2011)

Boaz Luz Eugeni Barkan

[1] We have recently published a new evaluation of Earth's Dole effect, which was based, in part, on measurements of δO2/Ar, δ17O and δ18O of dissolved argon and oxygen in the ocean surface. In calculations of the oxygen isotope effect due to photosynthesis and respiration (ɛup), gross O2 production (G) was an important factor. However, our estimates of G were based on an approximate equation, and in a recent publication it has been suggested that G obtained with this equation could be underestimated by about 33%. If true, such underestimation of G might lead to different ɛup values. To test this possibility, we have used a new rigorous equation with relevant information on isotopic composition of photosynthetic O2 and recalculated ɛup. Given the uncertainties, the new values do not differ from the previous ones, and therefore, the implications of the strong fractionation in the upper ocean (∼25‰) to the global Dole effect remain as in our original publication.

Oxygen-18

Oxygen-16

Oxygen-17

Isotopes of beryllium

10.1029/2011gb004178

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Variations of oxygen and hydrogen isotope ratios in deer bones and their potential in paleoclimatology

Geol. Soc. Am., Abstr. Programs; (United States) (1985)

Boaz Luz Henry P. Schwarcz A.B. Cormie

Variations of deltaO-18 of bone phosphate (deltap) and deltaD of bone collagen of white tailed deer, were studied in samples with wide geographic distribution in North America. There is a linear relationship between deltaO-18 of local precipitation (deltaw) and deltap (deltap=0.54deltaw+21.53; r=0.81). Scatter about the regression line is related to estimation errors of deltaw and to changes in relative humidity. Low relative humidity results in highly O-18 enriched leaf water, which may lead to similar enrichment in bones of deer, that depend on leaves as a major source of food. Linear correlation between deltaD and deltap is high (r=0.93), suggesting that both variables depend on variations in isotopic composition of local environmental water. Samples from arid regions are highly enriched in O-18 and deviate from the regression line. This raises the possibility of estimating past changes in relative humidity by simultaneous analysis of deltap and deltaD in fossil bones.

Paleoclimatology

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