Comparison of the altimetric signal with in situ measurements in the tropical Atlantic Ocean
Identifieur interne : 002383 ( Main/Exploration ); précédent : 002382; suivant : 002384Comparison of the altimetric signal with in situ measurements in the tropical Atlantic Ocean
Auteurs : Sabine Arnault [France] ; Lionel Gourdeau [France] ; Yves Menard [France]Source :
- Deep Sea Research Part A, Oceanographic Research Papers [ 0198-0149 ] ; 1992.
Abstract
An intensive survey of XBT and surface salinity sampling was carried out during September/October 1988 to compare surface dynamic height anomalies and altimetric anomalies along a line close to a GEOSAT satellite track in the Tropical Atlantic Ocean, 15°N–18°S. Hydrography and altimetry agree within 4 cm rms, except in the southern part of the section (south of 5°S). In the northern hemisphere, the correlation between the two data sets is about 0.80 and the two power spectra present the same energy level, with a k−1−k−2 dependence. The hydrographic data show an unusual tongue of fresh water around 7°N that results in positive dynamic height anomalies of about 10 dyn cm. The GEOSAT data analysed during the same period also show these anomalies with a similar scale.
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DOI: 10.1016/0198-0149(92)90084-7
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Hydrography and altimetry agree within 4 cm rms, except in the southern part of the section (south of 5°S). In the northern hemisphere, the correlation between the two data sets is about 0.80 and the two power spectra present the same energy level, with a k−1−k−2 dependence. The hydrographic data show an unusual tongue of fresh water around 7°N that results in positive dynamic height anomalies of about 10 dyn cm. The GEOSAT data analysed during the same period also show these anomalies with a similar scale.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li><li>Île-de-France</li></region><settlement><li>Paris</li><li>Toulouse</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Arnault, Sabine" sort="Arnault, Sabine" uniqKey="Arnault S" first="Sabine" last="Arnault">Sabine Arnault</name></region><name sortKey="Gourdeau, Lionel" sort="Gourdeau, Lionel" uniqKey="Gourdeau L" first="Lionel" last="Gourdeau">Lionel Gourdeau</name><name sortKey="Menard, Yves" sort="Menard, Yves" uniqKey="Menard Y" first="Yves" last="Menard">Yves Menard</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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