首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Deep chlorophyll maximum distribution in the central Tyrrhenian Sea described by a towed undulating vehicle
Authors:M Marcelli  M Caburazzi  A Perilli  V Piermattei  E Fresi
Institution:1. University of Tuscia, DECOS , via S. Giovanni Decollato 1, 01100, Viterbo, Italy marcomarcell@tin.it;3. University of Roma ‘Tor Vergata’, Dipartimento di Biologia (LESA) , via di Passo Lombardo 430, 00133, Rome;4. CNR-IAMC Sez. Oristano, Loc. Sa Mardini , 09070, Torregrande-Oristano, Italy;5. University of Tuscia, DECOS , via S. Giovanni Decollato 1, 01100, Viterbo, Italy
Abstract:The towed undulating vehicle (TUV), named SARAGO, was used for two fine-scale surveys between the Italian and the Sardinian coasts during the Astraea 2 cruise (6–7 and 26–27 September 1995), studying the deep chlorophyll maximum distribution. SARAGO sections identify a sub-surface doming with higher chlorophyll a and primary production concentrations in the upwelling area of a cyclonic gyre region, detected by sea-surface temperature images. In the first section, the cyclone presents a double doming, in density and salinity, with shallower and concentrated patches of chlorophyll a for about 2 miles. Twenty days later, the second section shows that the gyre changes shape and extension, showing a single doming with higher primary production and chlorophyll a concentrations, distributed over a large area of about 40 nautical miles. SARAGO allows analysis of this high-variability phenomenon (cyclonic gyre) and allows concentrated patches (2 nm) to be identified, thus proving the importance of TUVs in the study of mesoscale processes.
Keywords:DCM  Primary production  SARAGO  Towed vehicle
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号