Recursos de colección

PANGAEA - Publishing Network for Geoscientific & Environmental Data (840.638 recursos)

The information system PANGAEA is operated as an Open Access library aimed at archiving, publishing and distributing georeferenced data from earth system research. The system guarantees long-term availability of its content through a commitment of the operating institutions.

Datasets of project "Red Sea Program on marine sciences"

Mostrando recursos 1 - 20 de 120

  1. Stable carbon isotope record of Porites corals from the Gulf of Aqaba

    Al-Rousan, Saber; Felis, Thomas
    To study long-term variations in surface ocean d13C, we investigated coral skeletal d13C records of 20 colonies of the shallow-water coral Porites spp. from the northern Gulf of Aqaba and the northern Red Sea. The coral colonies represent different water depths, a wide range of different periods (Last Interglacial, Holocene, the last centuries, the last decades), and various growth rates. Records from modern and fossil corals show irregular seasonal cycles, attributed mainly to the seasonal cycle of light. No attenuation in the amplitude of the seasonal skeletal d13C cycle with depth is evident, and no significant correlation between mean annual...

  2. Stable carbon isotope record of Porites corals from the Gulf of Aqaba

    Al-Rousan, Saber; Felis, Thomas
    To study long-term variations in surface ocean d13C, we investigated coral skeletal d13C records of 20 colonies of the shallow-water coral Porites spp. from the northern Gulf of Aqaba and the northern Red Sea. The coral colonies represent different water depths, a wide range of different periods (Last Interglacial, Holocene, the last centuries, the last decades), and various growth rates. Records from modern and fossil corals show irregular seasonal cycles, attributed mainly to the seasonal cycle of light. No attenuation in the amplitude of the seasonal skeletal d13C cycle with depth is evident, and no significant correlation between mean annual...

  3. Coral d13C record from the Northern Gulf of Aqaba, sample AQB-Ph

    Al-Rousan, Saber; Felis, Thomas

  4. Coral d13C record from the Northern Gulf of Aqaba, sample AQB-Ph

    Al-Rousan, Saber; Felis, Thomas

  5. Coral d13C record from the Northern Gulf of Aqaba, sample El-15a

    Al-Rousan, Saber; Felis, Thomas

  6. Coral d13C record from the Northern Gulf of Aqaba, sample El-15a

    Al-Rousan, Saber; Felis, Thomas

  7. Coral d13C record from the Northern Gulf of Aqaba, sample AQB-Big

    Al-Rousan, Saber; Felis, Thomas

  8. Coral d13C record from the Northern Gulf of Aqaba, sample AQB-Big

    Al-Rousan, Saber; Felis, Thomas

  9. Coral d13C record from the Northern Gulf of Aqaba, sample AQB-18H

    Al-Rousan, Saber; Felis, Thomas

  10. Coral d13C record from the Northern Gulf of Aqaba, sample AQB-18H

    Al-Rousan, Saber; Felis, Thomas

  11. Coral d13C record from the Northern Gulf of Aqaba, sample Aq-19A

    Al-Rousan, Saber; Felis, Thomas

  12. Coral d13C record from the Northern Gulf of Aqaba, sample Aq-19A

    Al-Rousan, Saber; Felis, Thomas

  13. Stable oxygen isotope record of corales from the Red Sea

    Al-Rousan, Saber; Al-Moghrabi, Salim M; Pätzold, Jürgen; Wefer, Gerold
    In order to assess the ability of Porites corals to accurately record environmental variations, high-resolution (weekly/biweekly) coral delta18O records were obtained from four coral colonies from the northern Gulf of Aqaba, which grew at depths of 7, 19, 29, and 42 m along one transect. Adjacent to each colony, hourly temperatures, biweekly salinities, and monthly delta18O of seawater were continuously recorded over a period of 14 months (April 1999 to June 2000). Contrary to water temperature, which shows a regular and strong seasonal variation and change with depth, seawater delta18O exhibits a weak seasonality and little change with depth. Positive...

  14. Stable oxygen isotope record of corales from the Red Sea

    Al-Rousan, Saber; Al-Moghrabi, Salim M; Pätzold, Jürgen; Wefer, Gerold
    In order to assess the ability of Porites corals to accurately record environmental variations, high-resolution (weekly/biweekly) coral delta18O records were obtained from four coral colonies from the northern Gulf of Aqaba, which grew at depths of 7, 19, 29, and 42 m along one transect. Adjacent to each colony, hourly temperatures, biweekly salinities, and monthly delta18O of seawater were continuously recorded over a period of 14 months (April 1999 to June 2000). Contrary to water temperature, which shows a regular and strong seasonal variation and change with depth, seawater delta18O exhibits a weak seasonality and little change with depth. Positive...

  15. Growth rates and stable carbon and oxygen isotope record of corals from the Red Sea

    Al-Rousan, Saber; Al-Moghrabi, Salim M; Pätzold, Jürgen; Wefer, Gerold
    Monthly delta18O records of 2 coral colonies (Porites cf. lutea and P. cf. nodifera) from different localities (Aqaba and Eilat) from the northern Gulf of Aqaba, Red Sea, were calibrated with recorded sea surface temperatures (SST) between 1988 and 2000. The results show high correlation coefficients between SST and delta18O. Seasonal variations of coral delta18O in both locations could explain 91% of the recorded SST. Different delta18O/SST relations from both colonies and from the same colonies were obtained, indicating that delta18O from coral skeletons were subject to an extension rate effect. Significant delta18O depletions are associated with high extension rates...

  16. Growth rates and stable carbon and oxygen isotope record of corals from the Red Sea

    Al-Rousan, Saber; Al-Moghrabi, Salim M; Pätzold, Jürgen; Wefer, Gerold
    Monthly delta18O records of 2 coral colonies (Porites cf. lutea and P. cf. nodifera) from different localities (Aqaba and Eilat) from the northern Gulf of Aqaba, Red Sea, were calibrated with recorded sea surface temperatures (SST) between 1988 and 2000. The results show high correlation coefficients between SST and delta18O. Seasonal variations of coral delta18O in both locations could explain 91% of the recorded SST. Different delta18O/SST relations from both colonies and from the same colonies were obtained, indicating that delta18O from coral skeletons were subject to an extension rate effect. Significant delta18O depletions are associated with high extension rates...

  17. Stable isotope records of corals from the northern Red Sea

    Moustafa, Yaser Ahmed; Pätzold, Jürgen; Loya, Yossi; Wefer, Gerold
    We present a study based on X-ray chronologies and the stable isotopic composition of fossil Porites spp. corals from the northern Gulf of Aqaba (Red Sea) covering the mid-Holocene period from 5750 to 4450 14C years BP (before present). The stable oxygen and carbon isotopic compositions of five specimens reveal regular annual periodicities. Compared with modern Porites spp. from the same environment, the average seasonal delta18O amplitude of the fossil corals is higher (by ca. 0.35-0.60?), whereas annual growth rates are lower (by ca. 3.5 to 2 mm/year). This suggests stronger seasonality of sea surface temperatures and increased variability of...

  18. Stable isotope records of corals from the northern Red Sea

    Moustafa, Yaser Ahmed; Pätzold, Jürgen; Loya, Yossi; Wefer, Gerold
    We present a study based on X-ray chronologies and the stable isotopic composition of fossil Porites spp. corals from the northern Gulf of Aqaba (Red Sea) covering the mid-Holocene period from 5750 to 4450 14C years BP (before present). The stable oxygen and carbon isotopic compositions of five specimens reveal regular annual periodicities. Compared with modern Porites spp. from the same environment, the average seasonal delta18O amplitude of the fossil corals is higher (by ca. 0.35-0.60 per mil ), whereas annual growth rates are lower (by ca. 3.5 to 2 mm/year). This suggests stronger seasonality of sea surface temperatures and...

  19. Stable carbon isotope record of planktonic foraminifera and organic matter from sediment cores in the Gulf of Aqaba

    Al-Rousan, Saber; Pätzold, Jürgen; Al-Moghrabi, Salim M; Wefer, Gerold
    The stable carbon isotopic composition of the planktonic foraminifera Globigerinoides sacculifer and G. ruber (white) and sedimentary organic matter from the northern Gulf of Aqaba have been investigated to estimate changes in delta13CDIC in surface waters during the last 1,000 years. The high sedimentation rates at the core sites (about 54 cm/Kyear) provide high temporal resolution (~10 years). Recent sediments at the top of the cores reflect conditions younger than 1950. The delta13C records of the planktonic foraminifera from three multicores display similar trends, showing a uniform and consistent pattern before the 1750s, and a gradual decrease of approximately 0.63?...

  20. Stable carbon isotope record of planktonic foraminifera and organic matter from sediment cores in the Gulf of Aqaba

    Al-Rousan, Saber; Pätzold, Jürgen; Al-Moghrabi, Salim M; Wefer, Gerold
    The stable carbon isotopic composition of the planktonic foraminifera Globigerinoides sacculifer and G. ruber (white) and sedimentary organic matter from the northern Gulf of Aqaba have been investigated to estimate changes in delta13CDIC in surface waters during the last 1,000 years. The high sedimentation rates at the core sites (about 54 cm/Kyear) provide high temporal resolution (~10 years). Recent sediments at the top of the cores reflect conditions younger than 1950. The delta13C records of the planktonic foraminifera from three multicores display similar trends, showing a uniform and consistent pattern before the 1750s, and a gradual decrease of approximately 0.63...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.