DOCSLIB.ORG

An Updated Reporting of Rhodolith Deposits in the Offshore of Ischia (Gulf of Naples, Italy)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
An Updated Reporting of Rhodolith Deposits in the Offshore of Ischia (Gulf of Naples, Italy) See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/344565211 An updated reporting of rhodolith deposits in the offshore of Ischia (Gulf of Naples, Italy) Conference Paper · October 2020 CITATIONS READS 0 67 1 author: Gemma Aiello Italian National Research Council Istituto di Scienze Marine (ISMAR) 53 PUBLICATIONS 73 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: CARG Project View project All content following this page was uploaded by Gemma Aiello on 15 October 2020. The user has requested enhancement of the downloaded file. 2020 IMEKO TC-19 International Workshop on Metrology for the Sea Naples, Italy, October 5-7, 2020 An updated reporting of rhodolith deposits in the offshore of Ischia (Gulf of Naples, Italy) Gemma Aiello1 1 CNR-ISMAR of Naples, Calata Porta di Massa Porto di Napoli 80133 Naples Italy, [email protected]; [email protected] Abstract –In this work, the occurrence of rhodolith significantly contribute to the carbonate production, deposits on the sea bottom of the Ischia offshore is playing a significant role in the carbon cycle [18; 25; 33]. highlighted on the base of sedimentological data The maërl facies looks like a deposit of whole and/or coming from samples collected during the marine fragmented thalli of calcareous algae, which are often geological mapping of the Ischia Island. These sea collected in the concavities of the substratum [37]. The bottom samples are rich in bioclasts mainly gravelly term “maërl” was documented by Crouan & Crouan [38] sands in size. These deposits prevail in the eastern as a Breton word for unattached, branched corallines, Ischia offshore, on the relict volcanic edifice of the living or dead, loose-lying, often occurring in extensive Ischia Bank and on the genetically related parasitic deposits or algal gravels found off the northwest coast of vent and in the Ischia Channel. Subordinately, these France (maërl beds or banks) [3]. deposits occur also in the northern Ischia offshore, This note provides an updated report on the rhodolith where they unconformably overlie debris avalanches deposits present in the offshore island of Ischia (Gulf of and on the top of the Forio Bank. Seismo- Naples, Italy); it is based on data coming from sea bottom stratigraphic data on the Ischia Bank show that samples collected during the CARG project aimed at the rhodolith deposits correspond to a wide wedge-shaped realization and informatization of the marine geological unit occurring on the top of the volcanic edifice, cartography of the geological sheet No. 464 [39]. unconformably overlying the volcanic rocky The island of Ischia represents the emerged part of a substratum. In the Ischia Channel they are probably large volcanic field, which extends from the island of inter-layered in the highstand deposits. Procida to the submerged volcanoes of the western offshore of Ischia [39-41]. The occurrence of rhodolith I. INTRODUCTION deposits in the Gulf of Naples was highlighted by some Rhodolith or maërl deposits are represented by either previous studies. The sedimentological analysis of the sea alive or dead aggregations of coralline algae, which cover bottom samples, together with the realization of large coastal areas in the present-day oceans [1-3]. These geological cartography at the 1: 10.000 scale has allowed deposits represent common facies in carbonate platform to give an updated report on the rhodolith deposits environments, in some cases indicating the transition occurring in the Ischia offshore and representing both from bioclastic-to-rocky sea bottoms [4-5]. The relict deposits and zones of active carbonate sediment rhodoliths are the main components of the rhodalgal production. Although qualitatively, the seismo- skeletal assemblage that characterizes the carbonate stratigraphic data allowed for the calibration of the production in the oligophotic zone of Cenozoic and rhodalgal deposits on previously interpreted seismic modern carbonate platforms [5-10]. Sparker profiles [41]. Since Early Cretaceous calcareous red algae Previous studies focused on rhodolith deposits in the (Rhodophyta, Corallinales) live in the photic zone [11-13] marine areas surrounding Nisida-Posillipo (Nisida Bank from warm, tropical and temperate regions, to cold, polar and La Cavallara saddle) and the Gulf of Pozzuoli and subpolar ones [5; 14-18]. The colonization of red (Miseno Bank), while only a single sample came from the calcareous algae occurs both on the rocky substratum and Ischia Bank [42]. Otherwise the present work is based on on the mobile sea bottoms. Their growth-form varies a dense network of samples collected in the Ischia from encrusting forms to erect, articulated or free forms offshore. Moreover, the recognition of bioclastic deposits from the rocky substratum [12; 19-25]. on some Sparker seismic profiles let us to perform a Red coral algae play an important ecological role in qualitative calibration of data coming from sampling. marine ecosystems as habitat builders and produce Rhodolith deposits have previously been reported in the important biodiversity peaks [3; 26-29]. The mäerl / offshore of Ischia. In particular, Toscano et al. [42] have rhodolite layers [30-33] and the coralligenous [34-36] shown the variability of the rhodalgal facies in the Gulfs represent important examples. Furthermore, these algae of Naples and Pozzuoli, which is closely connected with the location of the platform, with the morpho-bathymetric together with samples, were acquired during the structure, with the morphology of the sea bottom and realization of sheet n. 464 "Ischia Island" of the new with the hydrodynamic conditions on the submerged geological map of Italy. volcanic banks (Nisida, Miseno and Pentapalummo On the Ischia Bank, a large volcanic edifice located in Banks; Ischia Bank). The top of these submerged the south-eastern offshore of Ischia, an extensive meadow volcanic banks is located at water depths of -28 / -30 m in Posidonia oceanica covers dark brown heterometric and is overlain by the Posidonia oceanica meadow, bioclastic sands (sample B1794) interpreted as rhodolith growing up to water depths of -35 / -40 m. In the marine deposits due to the presence of living coralline algae. The areas where the Posidonia meadow is lacking, the action sands cover a pebbly deposit consisting mainly of shells of the currents has controlled the formation of large fields of mollusks, with fragments of echinoids, widespread on of sandy ripples . the Posidonia oceanica meadow. A low percentage of The aim of this work is to improve the knowledge on mud fraction occurs in these deposits. The rhodolith the rhodolith deposits of the offshore of Ischia based on deposits were also found on the parasitic vent, genetically sedimentological, geological and cartographic data, connected to the main volcanic edifice of integrating the previous data, which mainly concern the the Ischia Bank (sample B1797). Here bioclastic sands ecology of these deposits, with a little attention paid to with glassy fragments, bryozoans and coralline algae their location and classification within the Quaternary have been found in a muddy lithoclastic matrix with a geological structure of the offshore of Ischia. volcanic component. Rhodolith deposits were also found in sample B1799, located on the same adventitious cone, II. MATERIALS AND METHODS in which these deposits are associated with mollusk The geological and geophysical data were acquired in shells, small gastropods and scarce bryozoans. Rhodolith the framework of the realization of the geological map n. deposits occur in the Ischia Channel, where they were 464 "Ischia Island" at the 1:10.000 scale [39]. Detailed recovered by sample B1800. Here the rhodolith deposits geological maps, showing the distribution of sea bottom are covered by an extensive meadow in Posidonia sediments, were built on the basis of the previous oceanica. Coralline algae are associated with fragments geological survey. Furthermore, the new sedimentological of mollusks, small gastropods, rhizomes of Posidonia analyses of sea bottom samples allowed to reconstruct the oceanica and branched bryozoans, as well as with small facies distribution of the sea bottom and to compare the slags and volcanic glass. Rhodolith deposits were also obtained sedimentological and geological results with the found in the offshore of Casamicciola (Ischia north; previous ones [42]. The stratigraphic framework of the sample B1813). Here these deposits grade laterally to investigated area is based on both high resolution seismic sandy and muddy sediments and to the debris avalanche profiles calibrated by cores and on high resolution deposits present in Casamicciola. In the western offshore sequence stratigraphy). Geological and geomorphological of Ischia, rhodolith deposits occur at the top of the data collected at the 1: 10.000 and 1: 5000 scales have volcanic edifice of the Forio Bank, where they are been reported on the 1:10.000 geological maps of characterized by coarse-grained sands and bioclastic Campania in order to later produce national geological pebbles in a scarce pelitic matrix. These deposits are maps at the 1: 50.000 scale. The previously interpreted completely analogous to those found on the Ischia Bank, Sparker seismic profiles available around Ischia [41], given that the fundamental genetic analogy between the were the subject of a new detailed interpretation focused two volcanic edifices. on
Load more

Recommended publications
  • The Rough Guide to Naples & the Amalfi Coast
    HEK=> =K?:;I J>;HEK=>=K?:;je CVeaZh i]Z6bVaÒ8dVhi D7FB;IJ>;7C7B<?9E7IJ 7ZcZkZcid BdcYgV\dcZ 8{ejV HVc<^dg\^d 8VhZgiV HVciÉ6\ViV YZaHVcc^d YZ^<di^ HVciVBVg^V 8{ejVKiZgZ 8VhiZaKdaijgcd 8VhVaY^ Eg^cX^eZ 6g^Zcod / AV\dY^EVig^V BVg^\a^Vcd 6kZaa^cd 9WfeZ_Y^_de CdaV 8jbV CVeaZh AV\dY^;jhVgd Edoojda^ BiKZhjk^jh BZgXVidHVcHZkZg^cd EgX^YV :gXdaVcd Fecf[__ >hX]^V EdbeZ^ >hX]^V IdggZ6ccjco^ViV 8VhiZaaVbbVgZY^HiVW^V 7Vnd[CVeaZh GVkZaad HdggZcid Edh^iVcd HVaZgcd 6bVa[^ 8{eg^ <ja[d[HVaZgcd 6cVX{eg^ 8{eg^ CVeaZh I]Z8Vbe^;aZ\gZ^ Hdji]d[CVeaZh I]Z6bVa[^8dVhi I]Z^haVcYh LN Cdgi]d[CVeaZh FW[ijkc About this book Rough Guides are designed to be good to read and easy to use. The book is divided into the following sections, and you should be able to find whatever you need in one of them. The introductory colour section is designed to give you a feel for Naples and the Amalfi Coast, suggesting when to go and what not to miss, and includes a full list of contents. Then comes basics, for pre-departure information and other practicalities. The guide chapters cover the region in depth, each starting with a highlights panel, introduction and a map to help you plan your route. Contexts fills you in on history, books and film while individual colour sections introduce Neapolitan cuisine and performance. Language gives you an extensive menu reader and enough Italian to get by. 9 781843 537144 ISBN 978-1-84353-714-4 The book concludes with all the small print, including details of how to send in updates and corrections, and a comprehensive index.
    [Show full text]
  • New Seismo-Stratigraphic and Marine Magnetic Data of the Gulf Of
    New seismo-stratigraphic and marine magnetic data of the Gulf of Pozzuoli (Naples Bay, Tyrrhenian Sea, Italy): inferences for the tectonic and magmatic events of the Phlegrean Fields volcanic complex (Campania) Gemma Aiello, Ennio Marsella & Vincenzo Di Fiore Marine Geophysical Research An International Journal for the Study of the Earth Beneath the Sea ISSN 0025-3235 Mar Geophys Res DOI 10.1007/s11001-012-9150-8 1 23 Your article is protected by copyright and all rights are held exclusively by Springer Science+Business Media B.V.. This e-offprint is for personal use only and shall not be self- archived in electronic repositories. If you wish to self-archive your work, please use the accepted author’s version for posting to your own website or your institution’s repository. You may further deposit the accepted author’s version on a funder’s repository at a funder’s request, provided it is not made publicly available until 12 months after publication. 1 23 Author's personal copy Mar Geophys Res DOI 10.1007/s11001-012-9150-8 ORIGINAL RESEARCH PAPER New seismo-stratigraphic and marine magnetic data of the Gulf of Pozzuoli (Naples Bay, Tyrrhenian Sea, Italy): inferences for the tectonic and magmatic events of the Phlegrean Fields volcanic complex (Campania) Gemma Aiello • Ennio Marsella • Vincenzo Di Fiore Received: 13 December 2011 / Accepted: 4 April 2012 Ó Springer Science+Business Media B.V. 2012 Abstract A detailed reconstruction of the stratigraphic emplacement of the Neapolitan Yellow Tuff deposits. A and tectonic setting of the Gulf of Pozzuoli (Naples Bay) is thick volcanic unit, exposed over a large area off the Capo provided on the basis of newly acquired single channel Miseno volcanic edifice is connected with the Bacoli-Isola seismic profiles coupled with already recorded marine Pennata-Capo Miseno yellow tuffs, cropping out in the magnetics gathering the volcanic nature of some seismic northern Phlegrean Fields.
    [Show full text]
  • TC19 International Workshop on Metrology for the Sea (Metrosea
    TC19 International Workshop on Metrology for the Sea ( MetroSea 2019) Genoa, Italy 3 -5 October 2019 ISBN: 978-1-7138-0205-1 Printed from e-media with permission by: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 Some format issues inherent in the e-media version may also appear in this print version. Copyright© (2019) by the International Measurement Confederation (IMEKO) All rights reserved. Printed with permission by Curran Associates, Inc. (2020) For permission requests, please contact the International Measurement Confederation (IMEKO) at the address below. IMEKO Secretariat Dalszinhaz utca 10, 1st floor, Office room No. 3 H-1061 Budapest (6th district) Hungary Phone/Fax: +36 1 353 1562 [email protected] Additional copies of this publication are available from: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 USA Phone: 845-758-0400 Fax: 845-758-2633 Email: [email protected] Web: www.proceedings.com TABLE OF CONTENTS MAKING DATA MANAGEMENT PRACTICES COMPLIANT WITH ESSENTIAL VARIABLES FRAMEWORKS: A PRACTICAL APPROACH IN THE MARINE BIOLOGICAL DOMAIN .................................. 1 Martina Zilioli, Alessandro Oggioni, Paolo Tagliolato, Cristiano Fugazza, Caterina Bergami, Alessandra Pugnetti, Paola Carrara METROLOGICAL ASPECTS OF THE TOMBOLO EFFECT INVESTIGATION – POLISH CASE STUDY .................................................................................................................................................................................... 7 Cezary Specht, Janusz Mindykowski, Pawel
    [Show full text]
  • Download (4MB)
    UNIVERSITÀ DEGLI STUDI DI NAPOLI “FEDERICO II” PhD thesis “Marine organisms model species for the assessment of biological, environmental and economic impacts on marine aquaculture in Campania” Coordinatore Candidato Tutor Prof. Dott. ssa Dott. Giuseppe Cringoli Sara Fioretti Francesco Paolo Patti Prof. Aniello Anastasio “First, think. Second, believe. Third, dream. And finally, dare. If you can dream it, you can do it” Walt Disney Index Abbreviations list ......................................................................................13 Figures list .................................................................................................15 Tables list ...................................................................................................17 Abstract .....................................................................................................19 Introduction ..............................................................................................23 I Aquaculture in Campania: from the origin to the current times ..........25 II Aquaculture today: global and European trend ..................................27 III Aquaculture in Italy ...........................................................................30 IV Aquaculture in Campania ..................................................................31 V Mussel farms: breeding systems .........................................................33 VI Mussel farms threats and future perspectives for the Campanian industries ................................................................................................35
    [Show full text]
  • Marine Stratigraphy of Active Volcanic Areas in the Campania Offshore: Correlation Between the Seismic Units of the Gulf of Pozzuoli and Ischia Island G
    GNGTS 2016 SESSIONE 3.2 MARINE STRATIGRAPHY OF ACTIVE VOLCANIC AREAS IN THE CAMPANIA OFFSHORE: CORRELATION BETWEEN THE SEISMIC UNITS OF THE GULF OF POZZUOLI AND ISCHIA ISLAND G. Aiello CNR-IAMC Sede di Napoli, Naples, Italy Introduction. The marine stratigraphy of active volcanic areas located in the Campania offshore is herein shown and discussed based on high resolution seismic data (Sparker seismic source). Selected examples located in the Gulf of Pozzuoli and in the Ischia offshore will be shown. New and innovative geological and hazard maps of volcanic terrains have been presented, dealing with the definition of mapped units during the field survey, highlighting that a geological map represents a warehouse in which to store the data existing on past eruptions and on inter-eruptive phenomena, having significant implications on the volcanic hazard assessment (Lucchi et al., 2010; Tibaldi, 2010; Bonomo and Ricci, 2010; Palladino et al., 2010; Viereck-Goette et al., 2010; Martì et al., 2010; Gertisser et al., 2010; Milia, 2010; Perrotta et al., 2010; De Vita et al., 2010; De Beni and Groppelli, 2010; Cortes et al., 2010; Vargas-Franco et al., 2010; Sheridan et al., 2010). Marine stratigraphy of active volcanic areas in the Campania offshore has been previously discussed, focusing on examples located in the Gulf of Pozzuoli and Ischia island (Aiello et al., 2012a, 2012b). The techniques of sequence stratigraphy have 534 GNGTS 2016 SESSIONE 3.2 been successfully applied in seismo-stratigraphic interpretation of high resolution seismic data (Fig. 1) to produce reliable geoseismic sections showing the stratigraphic relationships among volcanic bodies and interstratified marine deposits, mostly pertaining to the Late Quaternary depositional sequence (De Lange et al., 1989; Amorosi et al., 2008; Riboulot et al., 2012; Oyedele and Duprè, 2014; Aiello and Marsella, 2015).
    [Show full text]
  • The Phlegrean Fields
    Generale_INGL 25-03-2008 13:26 Pagina 40 The Phlegrean Fields 40 41 The Phlegrean Fields is a place of profound and The Phlegrean Fields (from the Greek Flegraios, ancient fascination. Here history, legend, myth and or “burning”) is an enormous volcanic area that i mystery melt into a fickle landscape. Rich with extends to the west of the Gulf of Naples from the history and art, the Phlegrean Fields are also hill of Posillipo to Cuma, and includes the islands extraordinarily beautiful, with the signs of volcanic of Nisida, Procida, Vivara and Ischia. activity clearly evident. The volcanic nature of the zone is immediately The area was an obligatory stop on the Grand Tour. obvious in the widespread presence of tuff, pumice, Azienda Autonoma The myths sung by Homer and Virgil, the Greek geysers of scorching steam and the craters that form di Cura Soggiorno culture that spread onto the rest of the peninsula, the natural amphitheatres. Some craters have become e Turismo di Pozzuoli via Campi Flegrei 3 record of the times in which the Roman aristocracy lakes like Averno, Lucrino, Fusaro and Miseno. tel. 081 5261481/5262419 built sumptuous villas: all of it helped to increase Active vulcanic phenomena are visibile close-up, www.infocampiflegrei.it the fascination of an area where extraordinary like in the famous Solfatara with its lake of lava, and Pozzuoli Tourist natural beauty and the wonderous opera of man the thermal springs of Agnano. In order to safeguard Information Office create an incomparable scenery. Archaeology lovers the delicate environmental equilibrium, the area piazza Matteotti l/a will find so much to see: impressive ruins, was made into the Phlegrean Fields Regional Park tel.
    [Show full text]
  • An Updated Reporting of Rhodolith Deposits in the Offshore of Ischia (Gulf of Naples, Italy)
    2020 IMEKO TC-19 International Workshop on Metrology for the Sea Naples, Italy, October 5-7, 2020 An updated reporting of rhodolith deposits in the offshore of Ischia (Gulf of Naples, Italy) Gemma Aiello1 1 CNR-ISMAR of Naples, Calata Porta di Massa Porto di Napoli 80133 Naples Italy, [email protected]; [email protected] Abstract – In this work, the occurrence of rhodolith produce important biodiversity peaks [3; 26-29]. The deposits on the sea bottom of the Ischia offshore is mäerl / rhodolite layers [30-33] and the coralligenous highlighted on the base of sedimentological data [34-36] represent important examples. Furthermore, these coming from samples collected during the marine algae significantly contribute to the carbonate production, geological mapping of the Ischia Island coupled with playing a major role in the carbon cycle [18; 25; 33]. This seismo-stratigraphic data derived from the geological work provides an updated report on the rhodolith deposits interpretation of Sparker seismic profiles. The sea offshore of the island of Ischia (Gulf of Naples, Italy); it bottom samples are rich in bioclasts, mainly gravelly is based on data coming from sea bottom samples sands. These deposits prevail in the eastern Ischia collected during the CARG project aimed at the offshore, on the relict volcanic edifice of the Ischia realization and informatization of the marine geological Bank and on the genetically related parasitic vent and cartography of the geological sheet No. 464 [38]. The in the Ischia Channel. Subordinately, these deposits island of Ischia represents the emerged part of a large occur also in the northern Ischia offshore volcanic field, which extends from the island of Procida (Casamicciola) and on the top of the Forio Bank.
    [Show full text]
  • Multivariate Tools to Investigate the Occurrence of Pollutants in a Highly
    EGU2020-21954 https://doi.org/10.5194/egusphere-egu2020-21954 EGU General Assembly 2020 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Multivariate tools to investigate the occurrence of pollutants in a highly anthropised marine area francesco paolo buonocunto1, nicola cardellicchio2, antonella di leo2, eliana esposito1, luciana ferraro1, santina giandomenico2, alfonsa milia1, lucia spada2, crescenzo violante1, and matilda mali3 1Istitute of Marine Sciences, National Research Council, Italy ([email protected]) 2Water Research Institute - National Research Council, Italy 3DICATECh - Polytechnic University of Bari, Italy Environmental monitoring of highly anthropised areas demands for deep survey of different environmental compartments (water, sediment, soil and biota) and determination of numerous bio-geo-chemical parameters, due to the huge impact of natural and anthropogenic organic substances constantly released into these environments. However, the interpretation of the large amount of data is not straightforward task due to their complexity that require a very tricky elaboration especially for the decision making processes. Chemo-metrics tools based on the multivariate statistical data analysis seems to be a powerful tool in addressing such complexity (Mali et al., 2017). In this work they are performed to get insight the occurrence of organic pollutants within a highly populated area such as the Gulf of Naples. The Gulfs of Naples, located along the Eastern Tyrrhenian Sea, is semi-enclosed by the Ischia- Procida Islands to NW, Campi Flegrei and the Campanian Plain in NE, the Sorrento peninsula in SE, and Capri island in W. The Campania region has one of the highest population densities in Italy.
    [Show full text]
  • Evidence for the Buried Rim of Campi Flegrei Caldera from 3-D Active Seismic Imaging A
    Evidence for the buried rim of Campi Flegrei caldera from 3-D active seismic imaging A. Zollo, S. Judenherc, E. Auger, L. d’Auria, J. Virieux, P. Capuano, C. Chiarabba, R. de Franco, J. Makris, A. Michelini, et al. To cite this version: A. Zollo, S. Judenherc, E. Auger, L. d’Auria, J. Virieux, et al.. Evidence for the buried rim of Campi Flegrei caldera from 3-D active seismic imaging. Geophysical Research Letters, American Geophysical Union, 2003, 30, pp.19. 10.1029/2003GL018173. hal-00407059 HAL Id: hal-00407059 https://hal.archives-ouvertes.fr/hal-00407059 Submitted on 29 Jan 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. GEOPHYSICAL RESEARCH LETTERS, VOL. 30, NO. 19, 2002, doi:10.1029/2003GL018173, 2003 Evidence for the buried rim of Campi Flegrei caldera from 3-d active seismic imaging A. Zollo,1 S. Judenherc,1 E. Auger,1 L. D’Auria,1 J. Virieux,2 P. Capuano,3 C. Chiarabba,4 R. de Franco,5 J. Makris,6 A. Michelini,7 and G. Musacchio8 Received 14 July 2003; accepted 14 August 2003; published 10 October 2003.
    [Show full text]
  • Buried Volcanic Structures in the Gulf of Naples (Southern Tyrrhenian Sea, Italy) Resulting from High Resolution Magnetic Survey and Seismic Profiling
    ANNALS OF GEOPHYSICS, VOL. 48, N. 6, December 2005 Buried volcanic structures in the Gulf of Naples (Southern Tyrrhenian Sea, Italy) resulting from high resolution magnetic survey and seismic profiling Gemma Aiello (1), Antimo Angelino (1), Bruno D’Argenio (1) (2), Ennio Marsella (1), Nicola Pelosi (1), Stefano Ruggieri (1) (3) and Agata Siniscalchi (4) (1) Istituto per l’Ambiente Marino Costiero (IAMC), CNR, Napoli, Italy (2) Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italy (3) Consorzio tra le Università degli Studi di Napoli «Parthenope», Stazione Zoologica «Anton Dohrn», Istituto per l’Ambiente Marino Costiero, Napoli, Italy (4) Dipartimento di Geologia e Geofisica, Università degli Studi di Bari, Italy Abstract In this paper we present a correlation between volcanic structures and magnetic anomalies in the Gulf of Naples (Southern Tyrrhenian Sea) based on high resolution magnetic profiling. A densely spaced grid of magnetic pro- files coupled with multichannel seismics (seismic source Watergun 15 cubic inch) was recorded in the Gulf of Naples, representing an active volcanic area during the Late Quaternary (volcanic centers of Somma-Vesuvius, Phlegraean Fields and Ischia and Procida islands). The dataset was collected during the oceanographic cruise GMS00-05 which took place during October-November 2000 in the South Tyrrhenian Sea onboard of the R/V Urania (National Research Council, Italy). Shallow volcanic structures in the subsurface of the gulf were recog- nized by seismo-stratigraphic analysis of high resolution profiles; the volcanic nature of some of these structures was inferred identifying the magnetic anomalies on a high resolution magnetic anomaly map of the gulf.
    [Show full text]
  • Algaebase: the Evolution of a Web Resource
    AlgaeBase: the evolution of a web resource Michael Guiry, Wendy Guiry Irish Seaweed Research Group, Ryan Institute, National University of Ireland Galway ([email protected]) AlgaeBase has been under construction since 1996, initially as a database of the seaweeds of the north-eastern Atlantic for private use as an aide-mémoire. It was extended to the Mediterranean as part of an EU project. Initially programmed in FileMaker, the database was put on line in 1998, but it quickly became apparent that the internet demand for such information outstripped the capabilities of this software. In 2004, it was completely reprogrammed in MySQL, and named AlgaeBase. Although all Irish public funding abruptly ceased in 2008, we have managed to keep the data on-line. In 2012, sponsorship from Ocean Harvest, an Irish company, was received and this will allow us to continue for the present. AlgaeBase was intended to be an information source on the taxonomy and distribution of all algae, but it quickly became apparent that taxonomy is inseparable from nomenclature and we have been greatly assisted in this by having on-line access to the cards of Paul Silva‟s Index Nominum Algarum. In recent years, we have put a lot of effort into adding PDFs of publications. In this we have been somewhat thwarted by the legal aspects of copyright; technically, we cannot offer PDFs of works before 1923. Nevertheless, we have managed to make available over 5,000 PDFs, many of rare and beautiful items found only in a handful of major libraries worldwide. Another issue is that of the legal requirements of the International Code of Nomenclature for Algae, Fungi, and Plants.
    [Show full text]
  • Multiparametric Analysis of Gulf of Pozzuoli
    1 Multiparametric Analysis of Gulf of Pozzuoli 2 Author: Giuseppe Pucciarelli a,b Supervisor: Prof.ssa Giannetta Fusco b 3 aUniversità degli Studi del Salento, [email protected] 4 bUniversità degli Studi di Napoli “Parthenope”, [email protected] 5 6 Abstract 7 8 The topic of this work is a multiparametric analysis of Gulf of Pozzuoli, a partially semiclosed basin situatated 9 in NW part of Gulf of Naples in Southern Tyrrhenian Sea, South of Italy. More precisely, the monitored 10 parameters have been sea water temperature and sea water current velocity, this latter in its components zonal 11 and meridional. Data used for the work have been acquired by a 3D-Dimensional current meter belonging to 12 M.E.D.U.S.A, an underwater infrastructure of Osservatorio Vesuviano (section of Naples of National Institute 13 of Geophysics and Volcanology) implemented for monitoring sea activity of Campi Flegrei, the most 14 dangerous volcanic caldera in the world to which Gulf of Pozzuoli is integral part. Data acquired for this work 15 belong to period January 2017 – May 2020. Sampling frequency is 1 Hz, but data have been averaged at 1 16 hour to obtain a more data compactness. So, besides time series, a Continuous Wavelet Transform has been 17 performed in a way to obtain a picture of signal frequencies with a good resolution, preserving time 18 information. Then, time series of zonal and meridional velocity for periods November-December 2017 and 19 November-December 2018 have been treated separately in a way to have a comparison with previous works.
    [Show full text]