scholarly journals Iberian Margin sea surface temperature during MIS 15 to 9 (580–300 ka): Glacial suborbital variability versus interglacial stability

2011 ◽  
Vol 26 (1) ◽  
Author(s):  
T. Rodrigues ◽  
A. H. L. Voelker ◽  
J. O. Grimalt ◽  
F. Abrantes ◽  
F. Naughton
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Sea Surface ◽  
Iberian Margin

Remote sensing of sea surface temperature and chlorophyll during Lagrangian experiments at the Iberian margin

2001 ◽  
Vol 51 (2-4) ◽  
pp. 269-281 ◽  
Author(s):  
Tim J. Smyth ◽  
Peter I. Miller ◽  
Steve B. Groom ◽  
Samantha J. Lavender
Keyword(s):  
Remote Sensing ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Sea Surface ◽  
Iberian Margin

The novel hydroxylated tetraether index RI-OH′ as a sea surface temperature proxy for the period 160–50 ka BP off the Iberian Margin

2020 ◽  
Author(s):  
Nina Davtian ◽  
Edouard Bard ◽  
Frauke Rostek ◽  
Guillemette Ménot ◽  
Sophie Darfeuil
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Phase Relationship ◽  
Western Mediterranean ◽  
Sea Surface ◽  
Spectrometric Method ◽  
Mass Spectrometric Method ◽  
The Novel ◽  
Temperature Records ◽  
Iberian Margin

<p>The stable oxygen isotope ratio (δ<sup>18</sup>O) of planktic foraminifers, the C<sub>37</sub> ketone unsaturation ratio (U<sup>K′</sup><sub>37</sub>) and the TetraEther indeX of tetraethers consisting of 86 carbon atoms (TEX<sub>86</sub>) are three well-known examples of paleothermometric proxies. These established proxies are in the realism phase of the Elderfield proxy curve (2002 <em>Geochim. Cosmochim. Acta</em> 66 Suppl. 1, 213, DOI: 10.1016/S0016-7037(02)01009-8), which means that their advantages and shortcomings are relatively well evidenced, though not fully understood. By contrast, the Ring Index of hydroxylated tetraethers (RI-OH′) is an example of novel paleothermometer. RI-OH′ is still in the optimism phase, so its potential in paleothermometry remains to be further explored.</p><p>Here, we present new high-resolution temperature records over the interval 160–50 ka BP using four organic proxies (RI-OH′, RI-OH, TEX<sub>86</sub> and U<sup>K′</sup><sub>37</sub>) from three deep-sea sediment cores located in a north-south transect along the Iberian Margin. RI-OH′, RI-OH and TEX<sub>86</sub> are based on LC-MS analyses of individual tetraethers with a two-column HPLC and improved mass spectrometric method. We analyzed all organic proxies in the same organic extracts to optimize proxy-proxy comparisons and phase relationship studies.</p><p>Our main results strengthen the optimism concerning the novel RI-OH′ proxy for five reasons. 1/, the only existing global core-top calibration to date allows to reconstruct realistic sea surface temperature (SST) from RI-OH′ in comparison to those derived from U<sup>K′</sup><sub>37</sub> and TEX<sub>86</sub>. 2/, RI-OH′ allows to establish plausible latitudinal temperature gradients, which are reasonably coherent with those based on U<sup>K′</sup><sub>37</sub> and TEX<sub>86</sub>. 3/, RI-OH′ records resemble those from established paleothermometers, especially U<sup>K′</sup><sub>37</sub> and δ<sup>18</sup>O of planktic foraminifers that better reflect SST than does TEX<sub>86</sub>. 4/, RI-OH′ responds to Dansgaard-Oeschger and Heinrich events as expected for North Atlantic SST proxies, which supports a direct relationship with Greenland temperature records. 5/, the outputs of a bipolar seesaw model forced with the RI-OH′ record are well correlated with Antarctic paleotemperatures as expected from theoretical considerations.</p><p>Overall, our main findings support a continued interest on the novel hydroxylated tetraether paleothermometer RI-OH′ so that it can progress along the Elderfield proxy curve. This work complements our first promising attempt based on a RI-OH record for a shallow core from the western Mediterranean Sea, located in a complex sedimentary setting much less favorable than the Iberian Margin (Davtian et al., 2019 <em>Paleoceanography and Paleoclimatology</em> 34, 616–634, DOI: 10.1029/2018PA003452).</p>

A 1-Ma record of sea surface temperature and extreme cooling events in the North Atlantic: A perspective from the Iberian Margin

2017 ◽  
Vol 172 ◽  
pp. 118-130 ◽  
Author(s):  
T. Rodrigues ◽  
M. Alonso-García ◽  
D.A. Hodell ◽  
M. Rufino ◽  
F. Naughton ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
North Atlantic ◽  
Sea Surface ◽  
The North ◽  
The North Atlantic ◽  
Iberian Margin

Holocene sea surface temperature variations recorded in corals from Kikai Island, Japan

2017 ◽  
Vol 51 (4) ◽  
pp. e9-e14 ◽  
Author(s):  
Hiroto Kajita ◽  
Atsuko Yamazaki ◽  
Takaaki Watanabe ◽  
Chung-Che Wu ◽  
Chuan-Chou Shen ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Sea Surface ◽  
Temperature Variations

PENENTUAN DAERAH POTENSIAL BUDIDAYA RUMPUT LAUT KAPPAPHYCUS ALVAREZII DI PROVINSI NUSA TENGGARA TIMUR

2019 ◽  
Vol 3 ◽  
pp. 929
Author(s):  
Marianus Filipe Logo ◽  
N M. R. R. Cahya Perbani ◽  
Bayu Priyono
Keyword(s):  
Dissolved Oxygen ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Kappaphycus Alvarezii ◽  
Sea Surface

Provinsi Nusa Tenggara Timur (NTT) merupakan penghasil rumput laut kappaphycus alvarezii kedua terbesar di Indonesia berdasarkan data Badan Pusat Statistik (2016). Oleh karena itu diperlukan zonasi daerah potensial budidaya rumput laut kappaphycus alvarezii untuk pengembangan lebih lanjut. Penelitian ini bertujuan untuk menentukan daerah yang potensial untuk budidaya rumput laut kappaphycus alvarezii di Provinsi NTT berdasarkan parameter sea surface temperature (SST), salinitas, kedalaman, arus, dissolved oxygen (DO), nitrat, fosfat, klorofil-a, dan muara sungai. Penentuan kesesuaian lokasi budidaya dilakukan dengan memberikan bobot dan skor bagi setiap parameter untuk budidaya rumput laut kappaphycus alvarezii menggunakan sistem informasi geografis melalui overlay peta tematik setiap parameter. Dari penelitian ini diperoleh bahwa kadar nitrat, arus, kedalaman, dan lokasi muara sungai menjadi parameter penentu utama. Jarak maksimum dari bibir pantai adalah sekitar 10 km. Potensial budidaya rumput laut kappaphycus alvarezii ditemukan di Pulau Flores bagian barat, kepulauan di Kabupaten Flores Timur dan Alor, selatan Pulau Sumba, Pulau Rote, dan Teluk Kupang.

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