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  • Chemistry  (39.508)
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  • 1
    Publikationsdatum: 2023-01-19
    Beschreibung: Bromine monoxide (BrO) and sulphur dioxide (SO2) abundances as a function of the distance from the source were measured by ground-based scattered-light Multi AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) in the volcanic plumes of Mt. Etna on Sicily, Italy in August-October 2004 and May 2005 and Villarica in Chile in November 2004. BrO and SO2 spatial distributions in a cross section of Mt. Etna’s plume were also determined by Imaging DOAS. We observed an increase in the BrO/SO2 ratio in the plume from below the detection limit near the vent to about 4.5 x 10-4 at 19 km (Mt. Etna) and to about 1.3 x 10-4 at 3 km (Villarica) distance, respectively. Additional attempts were undertaken to evaluate the compositions of individual vents on Mt. Etna. Furthermore, we detected the halogen species ClO and OClO. This is the first time that OClO could be detected in a volcanic plume. Using calculated thermodynamic equilibrium compositions as input data for a one–dimensional photochemical model, we could reproduce the observed BrO and SO2 vertical columns in the plume and their ratio as function of distance from the volcano as well as vertical BrO and SO2 profiles across the plume with current knowledge of multiphase halogen chemistry, but only when we assumed the existence of an ”effective source region”, where volcanic volatiles and ambient air are mixed at about 600°C (in the proportions of 60% and 40%, respectively)
    Beschreibung: Published
    Beschreibung: D06311
    Beschreibung: 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici
    Beschreibung: JCR Journal
    Beschreibung: open
    Schlagwort(e): Chemistry ; Volcanic Plumes ; 04. Solid Earth::04.08. Volcanology::04.08.01. Gases ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Woods Hole Oceanographic Institution
    Publikationsdatum: 2022-05-26
    Beschreibung: Fish and fishermen appear to be in a serious decline in New England. The haddock are overfished, inshore herring stocks are depleted, yellowtail flounder and lobster are scarce. The popular image is of grizzled fishermen, their boats chipped, scarred, old-fashioned hulks of wood tied up two and three abreast along the rotting wharves and piers of New England's depressed port towns. In this research project, we wanted to determine the state of the New England fishing industry and to propose acceptable methods for the management of the fishery. During our early discussions with the fishing industry people, we mentioned that we were interested in limited effort programs as they might be applied to New England fishermen. We carefully, and probably tediously, explained the "theory of limited effort" and we were generally thought to be daft. We were told we had things backwards--that the fishing industry needed more fish, more men, more boats - and that the way to accomplish this was to get a 200-mile fishing limit and kick the foreigners out. One of these wishes has come true - in the spring of 1976, P.L. 94-265 established a 200-mile fishing zone off the United States, with regional management councils to make management plans and allocate the resources first to United States fishermen, with surpluses to foreign fishermen.
    Beschreibung: Prepared with funds from the Pew Memorial Trust and by the Department of Commerce, NOAA Office of Sea Grant under Grant #04-5-158-8 and Grant #04-6-158-44106, and the Institution's Marine Policy and Ocean Management Program.
    Schlagwort(e): Fisheries ; Management
    Repository-Name: Woods Hole Open Access Server
    Materialart: Technical Report
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    In:  http://aquaticcommons.org/id/eprint/7347 | 424 | 2011-12-09 14:37:33 | 7347 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: In the line of the Chalci campaigns 78-01 and 78-02, the aim of this campaign too was the trawl exploration of the Ivoirian continental shelf at the depth of 10 to 120 metres.
    Schlagwort(e): Fisheries ; Management ; Côte d'Ivoire ; Chalci campaign ; trawl exploration ; Ministère de la Recherche Scientifique de la République de Côte d'Ivoire ; ORSTOM
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-245
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    In:  http://aquaticcommons.org/id/eprint/7267 | 424 | 2015-05-30 17:23:40 | 7267 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: This publication gives the results of the bottom trawlings made during the cruises Togo 3 and logo 4 by the oceanographic research vessel "Andre NIZERY" on the continental shelf of Togo during the estimation program ofhalieutic resources.The report includes:1 - The report of the cruises Togo 3 and Togo 42 - Some information on the presentation of the results3 - The trawl recording cards for the 2 cruises4 - The length frequency distributions of the measured samples.
    Schlagwort(e): Fisheries ; Management ; Togo ; bottom trawl ; length frequencies ; stock assessment ; Centre de Recherches Oceanographiques ; Ministere de la Recherche Scientifique de la Republique de Cote d'Ivoire ; Orstom
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 33-75
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    In:  http://aquaticcommons.org/id/eprint/7434 | 424 | 2011-12-10 13:02:44 | 7434 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: One additional Chalci campaign that, in line with the previous Chalci campaigns 78-01, 78-02, and 79/01, has as its major objective the trawl exploration of the Ivoirian continental shelf at the depth of 10 to 120 metres.
    Schlagwort(e): Fisheries ; Management ; Côte d'Ivoire ; Chalci campaign ; trawl exploration ; Ministère de la Recherche Scientifique de la République de Côte d'Ivoire ; Orstom
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-178
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    In:  http://aquaticcommons.org/id/eprint/7266 | 424 | 2015-05-30 17:24:10 | 7266 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: The fishing in 1982 has been oriented towards Sardinella aurita stock, which becomes the target species with 11.200 tons over 21.300 tons, taking the place of Sardinella maderensis, which reaches only 4,800 tons. Thehigh abundance of this species explains the decrease of fishing effort.
    Schlagwort(e): Fisheries ; Management ; Cote d'Ivoire ; statistics ; Sardinella aurita ; Sardinella maderensis ; Centre de Recherches Oceanographiques ; Ministere de la Recherche Scientifique de la Republique de Cote d'Ivoire ; Orstom
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-32
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Centre de Recherches Océanographiques | Abidjan, Côte d'Ivoire
    In:  http://aquaticcommons.org/id/eprint/7454 | 424 | 2015-05-30 17:28:10 | 7454 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: This publication shows the statistics of the sardinella fleet in 1981. These statistics are the catches and the effort by sector every two weeks. These data come also by month. At the end, ara listed the prices of the fresh fish in boxes at the criee. 1981 has been better than 1980, mainly for Sardinella aurita.
    Schlagwort(e): Fisheries ; Management ; Cote d'Ivoire ; sardines ; Sardinella ; Sardinella aurita
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 13-39
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    Centre de Recherches Océanographiques | Abidjan, Côte d'Ivoire
    In:  http://aquaticcommons.org/id/eprint/7456 | 424 | 2015-05-30 17:25:14 | 7456 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: This publication gives the results of bottom trawlings made during the cruises CHALCI 84-01 and CHALCI 84-02 by the oceanographic research vessel "Andre NIZERY" sur le plateau continental ivoirien.
    Schlagwort(e): Fisheries ; Management ; Cote d'Ivoire ; Trawl surveys
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 29 -117
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    In:  http://aquaticcommons.org/id/eprint/7455 | 424 | 2012-01-05 13:01:55 | 7455 | Centre de Recherches Océanologiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: In this report, accurate data from coastal stations and from the Vridi hydrological station were gathered. The used experiments took place from 1989 to 1991.
    Schlagwort(e): Biology ; Fisheries ; Management ; Côte d'Ivoire ; Vridi hydrological station ; coastal stations ; temperature ; salinity ; data collection
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-68
    Format: 68
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    Centre de Recherches Océanographiques | Abidjan, Côte d'Ivoire
    In:  http://aquaticcommons.org/id/eprint/7453 | 424 | 2015-05-30 17:27:39 | 7453 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publikationsdatum: 2021-09-24
    Beschreibung: This publication gives fishery statistics relating to the landings of the ivorian trawlers in Abidjan in 1982. The data used are the inquiries made by the C.R.O. on the boats and the auction sheets of the fishing harbour. The data processing was executed on the C.R.O. computer.
    Schlagwort(e): Fisheries ; Management ; Cote d'Ivoire ; statistics ; bottom trawls
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-11
    Format: 11
    Standort Signatur Erwartet Verfügbarkeit
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