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1. MEASUREMENT OF W+/- AND Z0 PROPERTIES AT THE CERN PBARP COLLIDER

Author

Appel, J, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Borer, K, Borghini, M, Carboni, G, Cavasinni, V, Cenci, P, Chollet, J, Clark, A, Codino, A, Conta, C, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Engelmann, R, Fayard, L, Fraternali, M, Froidevaux, D, and Gaillard, J

Published
2016

2. DIRECT PHOTON PRODUCTION IN PBARP COLLISIONS AT SQUARE-ROOT-S=630 GEV

Author

Ansari, R, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Booth, C, Borer, K, Borghini, M, Carboni, G, Cavasinni, V, Cenci, P, Chollet, J, Clark, A, Conta, C, Corona, C, Costantini, F, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Hansen, J, Einsweiler, K, Fayard, L, Ferrari, R, and Fraternali, M

Published
2016
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4. A STUDY OF 3-JET EVENTS AT THE CERN PP COLLIDER

Author

Appel, J, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Borer, K, Borghini, M, Burger, J, Carboni, G, Cavasinni, V, Cenci, P, Chollet, J, Clark, A, Codino, A, Conta, C, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Engelmann, R, Fayard, L, Fraternali, M, and Froidevaux, D

Published
2016

5. Abrupt climate shift in the Western Mediterranean Sea

Author

Schroeder, K., Chiggiato, J., Bryden, H. L., Borghini, M., and Ben Ismail, S.

Subjects
0106 biological sciences, Mediterranean climate, Water mass, Multidisciplinary, warming, 010504 meteorology & atmospheric sciences, 010604 marine biology & hydrobiology, North Atlantic Deep Water, Temperature salinity diagrams, Stratification (water), Biology, 01 natural sciences, Article, climate change, Mediterranean sea, Oceanography, Circumpolar deep water, Thermohaline circulation, mediterranean Sea, deep water, 0105 earth and related environmental sciences
Abstract

One century of oceanographic measurements has evidenced gradual increases in temperature and salinity of western Mediterranean water masses, even though the vertical stratification has basically remained unchanged. Starting in 2005, the basic structure of the intermediate and deep layers abruptly changed. We report here evidence of reinforced thermohaline variability in the deep western basin with significant dense water formation events producing large amounts of warmer, saltier and denser water masses than ever before. We provide a detailed chronological order to these changes, giving an overview of the new water masses and following their route from the central basin interior to the east (toward the Tyrrhenian) and toward the Atlantic Ocean. As a consequence of this climate shift, new deep waters outflowing through Gibraltar will impact the North Atlantic in terms of salt and heat input. In addition, modifications in the Mediterranean abyssal ecosystems and biogeochemical cycles are to be expected.

Published
2016
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8. Biogeochemical tracers and fluxes in the Western Mediterranean Sea, spring 2005

Author

Schroeder K. (a), Gasparini G.P. (a), Borghini M. (a), Cerrati G. (b), and Delfanti R. (b)

Subjects
Western Mediterranean, biogeochemical fluxes, nutrients, new production, biogeochemical tracers
Abstract

Only few studies about biogeochemical properties' distributions in wide areas of the Mediterranean Sea are available. We present a new biogeochemical dataset for the Western Mediterranean, collected in spring 2005. The paper presents a general description of the vertical and horizontal variability of dissolved inorganic nutrients and of the anomalous stoichiometric ratios. Nutrients are subsequently used as water mass tracers, comparing non-conservative with conservative tracers. The biogeochemical footprint of waters of different origin and ages has been revealed by the conservative parameters NO and PO, which combine oxygen and nutrients to cancel the alteration of both due to respiration. Using mass transports estimated with an inverse box model, the biogeochemical fluxes between different regions are computed. Our results confirm previous findings, i.e. that the eastern basin is a nutrient source for the western one. In addition we provide quantitative estimates of cross-basin biogeochemical fluxes. In the vertical, generally the surface layers act as a nutrient sink, to which corresponds a deep source. Finally, the biogeochemical fluxes were used to estimate the export production. A comparison with an independent measurement, confirms that this method is a valuable tool to obtain information about the CO2 removal and the functioning of pelagic ecosystems.

Published
2010

11. Multiparametric mixing analysis of the deep waters in the Western Mediterranean Sea

Author

Schroeder K., Borghini M., Cerrati M., Difesa V., Del fanti R., and Santinelli C.

Subjects
Western Mediterranean, nutrients, deep water spreading, Multiparametric analysis
Abstract

The winters 2004/2005 and 2005/2006 were characterised by the formation in the north-western Mediterranean Sea of dense waters, which were significantly warmer and saltier than previously. The temperature-salinity diagrams show the presence of three different deep water types, a resident one and two newly formed ones. In order to quantitatively evaluate the filling of the deep Western Mediterranean Sea with these three different water masses from their formation region, an extended optimum multiparametric analysis (eOMP) has been performed, which permitted the estimation of the mixing fractions of the deep water masses in the area. The paper presents a comparison between the distributions of the three deep water types in 2005 and in 2006, in order to assess the spreading of the newly formed waters from their formation region.

Published
2008

12. The Sicily Channel Regional Model forecasting system: initial boundary conditions sensitivity and case study evaluation

Author

Gabersek S., R. Sorgente, S. Natale, A. Ribotti, A. Olita, M. Astraldi, M. Borghini Gabersek S(1)(2), Sorgente R(3), Natale S(1), Ribotti A(3), Olita A(1), Astraldi M(4), and Borghini M(4)

Subjects
forecasting system, Sicily Channel Regional Model, Mediterranean
Abstract

The Sicily Channel Regional Model forecasting system was tested using an optimization package for the initial and lateral boundary conditions. Spurious high frequency oscillations during the spin-up time were successfully reduced both in duration and magnitude by optimizing the time tendency of the free surface elevation using the Variational Initialization and Forcing Platform method developed in the framework of the Mediterranean Forecasting System Towards the Environmental Prediction project. The effect of optimization was most profound for the free surface elevation, where all oscillations with periods shorter than 4 h were suppressed. The overall forecast skill was assessed on a 5 day case study starting on 6 April 2005, characterized by a fast passage of a deepening atmospheric low-pressure field with strong winds and marked wind direction change. We compared the predicted variables with in-situ and remotely sensed data. The forecasts of temperature, including the sea surface temperature, and salinity were quite successful, while the forecasted currents, especially within the surface layer, were not in good agreement with the measurements.

Published
2007

23. MEASUREMENT OF W+/- AND Z0 PROPERTIES AT THE CERN PBARP COLLIDER

Author

APPEL, J, BAGNAIA, P, BANNER, M, BATTISTON, R, BERNLOHR, K, BORER, K, BORGHINI, M, CARBONI, G, CAVASINNI, V, CENCI, P, CHOLLET, J, CLARK, A, CODINO, A, CONTA, C, DARRIULAT, P, DELOTTO, B, DELPRETE, T, DILELLA, L, DINESHANSEN, J, EINSWEILER, K, ENGELMANN, R, FAYARD, L, FRATERNALI, M, FROIDEVAUX, D, GAILLARD, J, GILDEMEISTER, O, GOGGI, V, GOSSLING, C, HAHN, B, HANNI, H, HANSEN, J, HANSEN, P, Harnew, N, HIMEL, T, ICONOMIDOUFAYARD, L, JAKOBS, K, JENNI, P, KLUGE, E, KOFOEDHANSEN, O, LANCON, E, LIVAN, M, LOUCATOS, S, MADSEN, B, MANI, P, MANSOULIE, B, MANTOVANI, G, MAPELLI, L, MEIER, K, MERKEL, B, MOLLERUD, R, MONIEZ, M, MONING, R, MORGANTI, M, NILSSON, B, ONIONS, C, PARKER, M, PARROUR, G, PASTORE, F, PEPE, M, PLOTHOWBESCH, H, POLVEREL, M, PUTZER, A, REPELLIN, J, ROTHENBERG, A, ROUSSARIE, A, RUHLMANN, V, SAUVAGE, G, SCHACHER, J, SCHLOTELBURG, M, STOCKER, F, SWARTZ, M, TEIGER, J, TITTEL, K, TOVEY, S, TSANG, W, VALDATANAPPI, M, VERCESI, V, WEIDBERG, A, WUNSCH, M, and ZACCONE, H

Published
1986

24. EXPERIMENTAL-STUDY OF THE EMERGENCE OF 2-JET DOMINANCE IN PBARP COLLISIONS AT SQUARE-ROOT-S = 630 GEV

Author

Appel, Ja, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Borer, K, Borghini, M, Carboni, G, Cavasinni, Vincenzo, Cenci, P, Chollet, Jc, Clark, Ag, Conta, C, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Engelmann, R, Fayard, L, Fraternali, M, Froidevaux, D, Gaillard, Jm, Gildemeister, O, Goggi, Vg, Gossling, C, Hahn, B, Hanni, H, Hansen, Jr, Hansen, P, Harnew, N, Himel, T, Iconomidoufayard, L, Jenni, P, Kluge, Ee, Kofoedhansen, O, Lancon, E, Livan, M, Loucatos, S, Madsen, B, Mani, P, Mansoulie, B, Mantovani, Gc, Mapelli, L, Meier, K, Merkel, B, Mollerud, R, Moniez, M, Moning, R, Morganti, M, Onions, C, Parker, Ma, Parrour, G, Pastore, F, Pepe, M, Plothowbesch, H, Polverel, M, Repellin, Jp, Rimoldi, A, Rothenberg, Af, Roussarie, A, Ruhlmann, V, Sauvage, G, Schacher, J, Schlotelburg, M, Stocker, F, Swartz, M, Teiger, J, Tovey, Sn, Tsang, Wy, Valdatanappi, M, Vercesi, V, Weidberg, Ar, Wunsch, M, and Zaccone, H.

Subjects
Nuclear Experiment
Abstract

A heuristic model is used to describe data collected by the UA2 experiment at √s = 630 GeV. Distributions of the energy sharing between the leading clusters and the rest of the event are examined. The main features of these distributions can be described by a two-component model with soft, collective interactions dominating at low transverse energy and hard, constituent interactions dominating at high transverse energy. This model provides a simple picture of the emergence of two-jet dominance at SPS pp Collider energies. © 1985.

Published
1985

25. A STUDY OF 3-JET EVENTS AT THE CERN PP COLLIDER

Author

Appel, Ja, Bagnaia, Paolo, Banner, M, Battiston, R, Bernlohr, K, Borer, K, Borghini, M, Burger, J, Carboni, G, Cavasinni, V, Cenci, P, Chollet, Jc, Clark, Ag, Codino, A, Conta, C, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Engelmann, R, Fayard, L, Fraternali, M, Froidevaux, D, Gaillard, Jm, Gildemeister, O, Goggi, Vg, Gossling, C, Hahn, B, Hanni, H, Hansen, Jr, Hansen, P, Harnew, N, Himel, T, Iconomidoufayard, L, Jakobs, K, Jenni, P, Kluge, Ee, Kofoedhansen, O, Lancon, E, Livan, M, Loucatos, S, Madsen, B, Mani, P, Mansoulie, B, Mantovani, Gc, Mapelli, L, Meier, K, Merkel, B, Mollerud, R, Moniez, M, Moning, R, Morganti, M, Onions, C, Parker, Ma, Parrour, G, Pastore, F, Pepe, M, Plothowbesch, H, Polverel, M, Repellin, Jp, Rimoldi, A, Rothenberg, Af, Roussarie, A, Ruhlmann, V, Sauvage, G, Schacher, J, Schlotelburg, M, Stocker, F, Swartz, M, Teiger, J, Tovey, Sn, Tsang, Wy, Valdatanappi, M, Vercesi, V, Weidberg, Ar, Wunsch, M, and Zaccone, H.

Published
1986

26. OBSERVATION OF ELECTRONS PRODUCED IN ASSOCIATION WITH HARD JETS AND LARGE MISSING TRANSVERSE-MOMENTUM IN PPBAR-COLLISIONS AT SQUARE-ROOT S = 540-GEV

Author

BAGNAIA, P, BANNER, M, BATTISTON, R, BLOCH, P, BORER, K, BORGHINI, M, BURGER, J, CHOLLET, J, CLARK, A, CONTA, C, DARRIULAT, P, DILELLA, L, DINESHANSEN, J, ENGELMANN, R, FAYARD, L, FRATERNALI, M, FROIDEVAUX, D, GAILLARD, J, GILDEMEISTER, O, GOGGI, V, GOSSLING, C, HAHN, B, HANNI, H, HANSEN, J, HANSEN, P, HIMEL, T, JENNI, P, KOFOEDHANSEN, O, LANCON, E, LIVAN, M, LOUCATOS, S, MADSEN, B, MANI, P, MANSOULIE, B, MANTOVANI, G, MAPELLI, L, MERKEL, B, MOLLERUD, R, ONIONS, C, PARROUR, G, PASTORE, F, PLOTHOWBESCH, H, POLVEREL, M, REPELLIN, J, RIMOLDI, A, ROTHENBERG, A, ROUSSARIE, A, SAUVAGE, G, SCHACHER, J, SIEGRIST, J, STIMPFL, G, STOCKER, F, SWARTZ, M, TEIGER, J, VERCESI, V, WEIDBERG, A, ZACCONE, H, ZAKRZEWSKI, J, and ZELLER, W

Published
1984

27. MEASUREMENT OF W-PRODUCTION AND Z-PRODUCTION PROPERTIES AT THE CERN PBARP COLLIDER

Author

Ansari, R, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Booth, C, Borer, K, Borghini, M, Carboni, G, Cavasinni, Vincenzo, Cenci, P, Chollet, Jc, Clark, Ag, Conta, C, Costantini, Flavio, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Fayard, L, Ferrari, R, Fraternali, M, Froidevaux, D, Gaillard, Jm, Gildemeister, O, Goggi, Vg, Gossling, C, Hahn, B, Hanni, H, Hansen, Jr, Hansen, P, Hara, K, Harnew, N, Hugentobler, E, Iacopini, E, Iconomidoufayard, L, Jakobs, K, Jenni, P, Kluge, Ee, Kofoedhansen, O, Lancon, E, Lariccia, P, Livan, M, Loucatos, S, Madsen, B, Mansoulie, B, Mantovani, Gc, Mapelli, L, Meier, K, Merkel, B, Mollerud, R, Moniez, M, Moning, R, Morganti, M, Onions, C, Pal, T, Parker, Ma, Parrour, G, Pastore, F, Pepe, M, Petridou, C, Plothowbesch, H, Polverel, M, Rasmussen, L, Repellin, Jp, Roussarie, A, Ruhlmann, V, Sauvage, G, Schacher, J, Stocker, F, Swartz, M, Teiger, J, Tittel, K, Tovey, Sn, Tsang, Wy, Valdatanappi, M, Vercesi, V, Weidberg, Ar, Wunsch, M, and Zaccone, H.

Subjects
High Energy Physics::Experiment
Abstract

A study has been made of the production characteristics of W and Z bosons produced at the CERN pp Collider. The event sample consists of 251 W→ev decays, and 39 Z→e+e- decays, identified by the UA2 detector, and corresponds to an integrated luminosity of 142 nb-1 at √s = 546 GeV, and 768 nb-1 at √s = 630 GeV. Measurements of W and Z production cross sections, of longitudinal and transverse momentum distributions, and of associated jet production, are presented. These measurements are compared with theoretical expectations, which include higher order QCD effects. © 1987.

Published
1987

30. Progress from 1989 to 1992 in understanding the circulation of the Western Mediterranean Sea

Author

Lehucher, P. M., Beautier, L., Chartier, M., Martel, F., Mortier, L., Brehmer, P., Millot, C., Alberola, C., Benzhora, M., Taupierletage, I., Chabert D Hieres, G., Didelle, H., Gleizon, P., Obaton, D., Crepon, M., Herbaut, C., Madec, G., Speich, S., Nihoul, J., Jean-Marie Beckers, Brasseur, P., Deleersnijder, E., Djenidi, S., Font, J., Castellon, A., Garcialadona, E., Lopez-Garcia, M. J., Manriquez, M., Maso, M., Salat, J., Tintore, J., Alonso, S., Gomis, D., Viudez, A., Astraldi, M., Bacciola, D., Borghini, M., Amico, F., Galli, C., Lazzoni, E., Gasparini, G. P., Sparnocchia, S., Harzallah, A., Laboratoire d'océanographie dynamique et de climatologie (LODYC), and Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Circulation, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], [SDE.MCG]Environmental Sciences/Global Changes, MED, Mediterranean, [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]
Abstract

The present paper describes the major results obtained from 1989 to 1992 by the EUROMODEL group in studying the circulation in the Western Mediterranean Sea. Particular emphasis has been given to the physical processes responsible for seasonal and mesoscale variabilities. Observations (in situ and satellite), together with theoretical, physical and numerical models, have been widely used in the course of these studies. Attention has been focused on the dynamics of the northern basin (deep water formation, dynamics of the Northern Mediterranean Current, circulation and shelf/slope interaction in the Balearic Sea) and of the southern basin (Alboran Sea circulation, instabilities of the Algerian Current). The straits dynamics have been studied with particular reference to the Corsica channel. Preliminary runs of a basin-scale circulation model of the Western Mediterranean Sea forced by the straits are also presented. They are shown to be capable of generating a cyclonic circulation in the western basin.

31. The Italian Fixed-point Observatory Network for marine environmental monitoring – IFON

Author

Ravaioli, M., Bergami, C., Riminucci, F., Aracri, S., Aliani, S., Bastianini, M., Bergamasco, A., Bommarito, C., Borghini, M., Bozzano, R., Brunetti, F., Cantoni, C., Caterini, E., Cardin, V., Cesarini, C., Colucci, R. R., Crisafi, E., Crise, A., D’adamo, R., Di Sarra, A. G., Fanara, C., Giorgetti, A., Federica Grilli, Langone, L., Lipizer, M., Marini, M., Menegon, S., Minuzzo, T., Miserocchi, S., Partescano, E., Paschini, E., Pavesi, F., Penna, P., Pensieri, S., Pugnetti, A., Raicich, F., Sarretta, A., Schroeder, K., Scirocco, T., Specchiulli, A., Stanghellini, G., and Vetrano, A.

32. KM3NeT. Conceptual Design Report for a Deep-Sea Research Infrastructure Incorporating a Very Large Volume Neutrino Telescope in the Mediterranean Sea

Author

Km, The Net Consortium, Bagley, P., Holford, A., Jamieson, A., Priede, M., Ageron, M., Aubert, J., Bertin, V., Beurthey, S., Billault, M., Brown, A., Brunner, J., Busto, J., Caillat, L., Calzas, A., Carr, J., Cosquer, A., Coyle, P., Icurtil, C., Dornic, D., Escoffier, S., Gensolen, F., Gojak, C., Hallewell, G., Keller, P., Lagier, P., Payre, P., Reed, C., Bruijn, R., Koopstra, J., Lim, G., Wolf, E., Baret, B., Donzaud, C., Kouchner, A., Elewyck, V., Anassontzis, E. G., Resvanis, L. K., Anvar, S., Ballet, J., Chateau, F., Delagnes, E., Druillole, F., Durand, D., Grenier, I., Guilloux, F., Kestener, P., Lamare, P., Le Provost, H., Loucatos, S., Louis, F., Maurin, G., Moscoso, L., Naumann, C., Schuller, J. ‐. P., Stolarczyk, T., Vallage, B., Vernin, P., Rabouille, C., Baccila, D., Borghini, M., Fassin, M., Gasparini, G., Schroeder, K., Sparnocchia, S., Traverso, P., Aguilar, J. A., Bernabeu‐verdu, J., Hernandez‐rey, J., Real, D., Salesa, F., Toscano, S., Zornoza, J. D., Razis, P., Aharonian, F., Malishev, D., Delaney, S., Drury, L., Gabici, S., Hooper, A., Taylor, A., Anton, G., Auer, R., Eberl, T., Fehr, F., Fritsch, U., Graf, K., Herold, B., Höβl, J., Kalekin, O., Kappes, A., Katz, U. F., Klein, R., Kopper, C., Ikuch, S., Lahmann, R., Millinger, M., Imotz, H., Schöck, F., Shanidze, R., Albert, A., Cohen, F., Ernenwein, J., Stubert‐drouhin, D., Chronis, G., Georgiadou, I., Kontoyiannis, H., Lykousis, V., Papadopoulos, E., Fragoulis, N., Gizani, N., Kalogirou, K., Leisos, A., Tsirigotis, A., Tzamarias, S., Bellotti, R., Circella, M., Megna, R., Ruvo, G., Ruppi, M., Bazzotti, M., Biagi, S., Carminati, G., Cecchini, S., Chiarusi, T., Giacomelli, G., Margiotta, A., Spurio, M., Aiello, S., Caponetto, L., Grimaldi, A., Leonora, E., Lo Presti, D., Randazzo, N., Reito, S., Russo, G. V., Sciliberto, D., Sipala, V., Urso, S., Anghinolfi, M., Bersani, A., Battaglieri, M., Cereseto, R., Vita, R., Costantini, H., Fratini, K., Minutoli, S., Musico, P., Osipenko, M., Ricco, G., Ripani, M., Taiuti, M., Brunoldi, M., Piombo, D., Torazza, D., Amore, I., Anzalone, A., Cacopardo, G., Cocimano, R., Coniglione, R., D Amico, A., Distefano, C., Migneco, E., Musumeci, M., Orlando, A., Papaleo, R., Pappalardo, V., Piattelli, P., Raia, G., Riccobene, G., Rovelli, A., Sapienza, P., Sedita, M., Habel, R., Martini, A., Trasatti, L., Barbarino, G., Rosa, G., Russo, S., Castorina, E., Flaminio, V., Garaguso, R., Grasso, D., Marinelli, A., Morganti, M., Sollima, C., Ameli, F., Bonori, Maurizio, Antonio Capone, Bonis, Giulia, Lucarelli, Fabrizio, Masullo, Rocco, Simeone, Francesco, Vecchi, Manuela, Bigourdan, B., Bouquet, P., Choqueuse, D., Damy, G., Drogou, J., Guédé, Z., Marvaldi, J., Rolin, J., Valdy, P., Etiope, G., Favali, P., La Fratta, C., Marinaro, G., Lyons, K., Pradier, T., Racca, C., Felea, D., Maris, O., Pavalas, G., Popa, V., Radu, A., Rujoiu, M., Tonoiu, D., Bellou, N., Colijn, F., Koske, P., Staller, T., Kalantar‐nayestanaki, N., Löhner, H., Bradbury, S., Rose, J., White, R. J., Jouvenot, F., Touramanis, C., Kapribanos, P., Lenis, D., Markou, C., Papazoglou, Y., Rapidis, P., Siotis, I., Assis Jesus, A., Boer Rookhuizen, H., Boer, R., Bouwhuis, M., Colnard, C., Decowski, P., Heine, E., Ihogenbirk, J., Hoek, M., Jansweijer, P., Jong, M., Kok, H., Kruijer, L., Mangano, S., Mos, S., Peek, H., Presani, E., Palioselitis, D., Steenhoven, G., Steijger, J., Timmer, P., Werneke, P., Wijnker, G., Haren, H., Smit, M., Anasontzis, S., Athanasopoulos, T., Ball, A., Belias, A., Fotiou, A., Kiskiras, Y., Kostoglou, A., Koutsoukos, S., Maniatis, M., Imarkopoulos, E., Psallidas, A., Stavropoulos, G., Tsagli, V., Vermisoglou, G., Zhukov, V., Perkin, J., Thompson, L., Gasparoni, F., Giacopelli, S., Kooijman, P., Bigongiari, C., Züñiga, J., Alba, J., Ardid, M., Bou‐cabo, M., Camarena, F., Espinosa, V., Martínez‐mora, J., Ramis, J., Redondo, J., and Sánchez‐morcillo, V.

33. Marine observing systems from fixed platform in the Ligurian Sea

Author

Picco, P., ROBERTO BOZZANO, Schiano, M. E., Bordone, A., Borghini, M., Di Nallo, G., Pensieri, S., Schirone, A., and Sparnocchia, S.

Subjects
marine observatory, oceanography, meteo-oceanographic buoys, air-sea interaction, ocean monitoring
Abstract

Two meteo-oceanographic buoys are operating in the Ligurian Sea. ODAS-ITALIA 1 is designed to be located in the open, deep sea to support air-sea interaction studies, while SAMA MAMBO is specifically addressed to coastal environmental monitoring. The different technical solutions adopted for each buoy according to their specific employment are here described. Some years of operation have proved that both systems are able to satisfactory run for long periods, thus providing reliable long term time series of marine environmental parameters. Results so far obtained and the potentialities of the joint use of the two buoys are enlighted.

34. Zooplankton diel vertical migration in the Corsica Channel (north-western Mediterranean Sea) detected by a moored acoustic Doppler current profiler

Author

D. Guerra, K. Schroeder, M. Borghini, E. Camatti, M. Pansera, A. Schroeder, S. Sparnocchia, J. Chiggiato, Guerra, D., Schroeder, K., Borghini, M., Camatti, E., Pansera, M., Schroeder, Anna, Sparnocchia, S., and Chiggiato, J.

Subjects
0106 biological sciences, Diel vertical migration, Zooplankton, ADCP, 010504 meteorology & atmospheric sciences, Stratification (water), LIGURIAN SEA, TIME-SERIES, PATTERNS, BIOMASS, MACROPLANKTON, VARIABILITY, ABUNDANCE, PLANKTON, BACKSCATTERING, DISTRIBUTIONS, 01 natural sciences, Water column, Mediterranean sea, Acoustic Doppler current profiler, 14. Life underwater, lcsh:Environmental sciences, 0105 earth and related environmental sciences, lcsh:GE1-350, Biomass (ecology), 010604 marine biology & hydrobiology, lcsh:Geography. Anthropology. Recreation, Light intensity, Oceanography, lcsh:G, Environmental science
Abstract

Diel vertical migration (DVM) is a survival strategy adopted by zooplankton that we investigated in the Corsica Channel using acoustic Doppler current profiler (ADCP) data from April 2014 to November 2016. The principal aim of the study is to characterize migration patterns and biomass temporal evolution of zooplankton along the water column. The ADCP measured vertical velocity and echo intensity in the water column range between about 70 and 390 m (the bottom depth is 443 m). During the investigated period, zooplanktonic biomass had a well-defined daily and seasonal cycle, with peaks occurring in late winter to spring (2015 and 2016) when the stratification of the water column is weaker. Zooplanktonic biomass temporal distribution in the whole water column is well correlated with biomass of primary producers, estimated with satellite data. Zooplanktonic blooming and non-blooming periods have been identified and studied separately. During the non-blooming period zooplanktonic biomass was most abundant in the upper and the deep layers, while during the blooming period the upper-layer maximum in zooplanktonic biomass disappeared and the deep layer with high zooplanktonic biomass became thicker. These two layers are likely to correspond to two different zooplanktonic communities. The evolution of zooplanktonic biomass is well correlated with chlorophyll, with phytoplankton biomass peaks preceding the upper-layer secondary production by a lag of about 3.5 weeks. Nocturnal DVM appears to be the main pattern during both periods, but reverse and twilight migration are also detected. Nocturnal DVM was more evident at mid-water than in the deep and the upper layers. DVM occurred with different intensities during blooming and non-blooming periods. One of the main outcomes is that the principal drivers for DVM are light intensity and stratification, but other factors, like the moon cycle and primary production, are also taken in consideration.

Published
2019
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