DOCSLIB.ORG

Active Structures of the Emilia-Romagna

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Active Structures of the Emilia-Romagna GNGTS – Atti del 23° Convegno Nazionale / 02.11 M. Boccaletti (1,2), M. Bonini (1), G. Corti (2), P. Gasperini (3), L. Martelli (4), L. Piccardi (1), C. Tanini (2) and G. Vannucci (5) (1) CNR - Istituto di Geoscienze e Georisorse, Sezione di Firenze (2) Dipartimento di Scienze della Terra, Università di Firenze (3) Dipartimento di Fisica, Settore di Geofisica, Università di Bologna (4) Regione Emilia-Romagna - Servizio Geologico, Sismico e dei Suoli, Bologna (5) Istituto Nazionale di Geofisica e Vulcanologia, Bologna ACTIVE STRUCTURES OF THE EMILIA-ROMAGNA To improve the knowledge of the territory, and in particular to gain an insight into recent and ongoing evolution, the Emilia-Romagna Region deemed has launched a region-wide research project that sets out to collate and present seismological data and information relating to active structural elements identifiable on the basis of morphological and geological data. The results of this project are synthesized in the “Seismotectonic map of the Emilia-Romagna Region” (Boccaletti et al., 2004). This map correlates surface active structures with deep ones both in the Apennines and in the Po Plain, taking into account stress fields and, in relation to earthquakes, hypocentral distribution at depth. Specific geological and geomorphological studies were carried out (see also RER, 1999; Cerrina Feroni et al., 2002), and instrumental and historical seismological data was revised. Valuable information on the stratigraphy and the structures of the subsoil of the Apenninic margin and of the Po Plain was derived from seismic reflection surveys (courtesy of ENI S.p.A.–Exploration & Production Division) and from RER and ENI-Agip (1998). The analysis was implemented by a revision of instrumental and historical seismological data for a comparison with the potentially active structures. From distribution and frequency of recognisable surface active structures, it emerges that these are not uniformly distributed throughout the region, but are clearly localized in 3 areas. 1. An almost continuous fault system can be identified along the apenninic watershed, coinciding approximately with the Cervarola and Falterona thrust- front. Indications of recent and ongoing activity along this front derive from morphostructural evidence, for example the morphological contrast along the fault scarp which brings the Macigno and glacial deposits together in the M. Orsaro area, the morphological contrast and the fluvial capture around the anticline of Castiglion de’ Pepoli. In the upper Apennines also strike-slip and minor extenxional faults are active. 2. Another active fault system coincides with the apenninic margin. Based on frequency and evidence of the structures, 3 quite separate sectors can be identified: a) the area W of the Taro valley; b) the area between the Taro valley and Bologna; c) the Romagna apenninic margin. a. The structures showing signs of recent activity, between Castel S. Giovanni and Salsomaggiore, coincide with the buried Emilia Folds, the SE continuation of the Broni-Stradella thrust (Benedetti et al., 2003). Between Salsomaggiore and the Taro valley, the apenninic margin coincide with an active front that is responsible for the formation of the anticline and the tectonic window of Salsomaggiore. The corresponding sector of the lower GNGTS – Atti del 23° Convegno Nazionale / 02.11 and mid Apennines shows no evidence of surface active structures of particular importance, with the exception of the reactivated thrust faults which led to the formation of the Bobbio tectonic window. b. In this sector, a continuous active front can be traced, coinciding with the apenninic margin. The corresponding Apennines area also presents much evidence of active structures, both morphological and geological: middle Pleistocene deposits are faulted and the terraces of the upper Po Plain, with late Pleistocene deposits, are tilted. Throughout the area, seismic profiles of the subsoil reveal that middle Pleistocene sediments are folded and faulted. Reconstruction of the base of holocenic sediments shows that the greatest depth of this surface is in front of the apenninic margin, between Reggio Emilia and Bologna. In the Bologna hills there are also back-thrusts that link up in the subsoil with the pede-apenninic thrust. Through the Parma, Taro and Ceno valleys, the pede-apenninic structure divides and trends SW with splays typical of strike-slip structures. In the Apennines, the thickness of the Ligurian units is greatest between the Ceno and Nure valleys, while it is greatly reduced between the Taro and Secchia valleys; thus the area E of the Taro appears uplifted compared to the area to the W. Several active faults, transverse to the axis of the chain, have been identified in the Secchia valley. c. Between the Idice and Ronco-Bidente valleys, plio-quaternary marine deposits dip under the alluvial sediments to form a monocline and do not appear dislocated by active faults.The main signs of activity are in the Apennines and consist mainly of the Modigliana anticline, blind back-thrust localized at the base of the Pliocene sequence and in the Marnoso- Arenacea between the valleys of Lamone and Montone, and the Cesena “high”. The structural order of the Cesena hills is more complex, with thrusts and folds cut by an extensional anti-Apenninic structure in the Savio valley. East of Cesena, post-evaporitic deposits again dipped under quaternary alluvium to form a monocline and do not appear dislocated by active faults. The only structure that present signs of activity is an anticline which deforms middle Pleistocene deposits between Rimini and Cattolica, probably the NW trending continuation of the Pesaro-Senigallia anticline described in Vannoli et al. (2004), at the top of the buried Rimini–Ancona thrust (Adriatic folds in Pieri and Groppi, 1981). 3. Lastly, an important active fault system coincides with the Ferrara Folds and the Emilia Folds (Pieri and Groppi, 1981). In this case the principal manifestations of activity derive from seismic profiles. It also emerges from seismic profiles that the active and recent structures described above are connected at depth with compressive structures affecting the carbonate sequence and the basement. The carbonate sequence is thrust-faulted; these thrusts linking up with the active structures of the upper Apennines, the pede-apenninic front and with the Ferrara ridge. The structures affecting the basement (Argnani et al., 1997) also connect up with surface active thrust fronts, in particular with the pede-apenninic thrust and with the Ferrara ridge. The folds of the basement and of the carbonate sequence clearly explain the variations in thickness of the Ligurian allochthonous nappe and the formation of tectonic windows. GNGTS – Atti del 23° Convegno Nazionale / 02.11 Seismicity linked to surface structures (hypocentres < 15 km) is widespread throughout the Apennines and localized above all next to the Ferrara ridge. Computed focal mechanisms are thrust and strike-slip faulting, indicating both NE- SW and NW-SE compressions. Distensive focal mechanisms are secondary. This is entirely consistent with findings from studies of recent and active stress fields. It transpires therefore that the kinematics of the principal surface active structures are transpressive in type. Crustal seismicity (hypocentres between 15 and 35 km) has a similar distribution pattern to more superficial seismicity, but with lower density. Again in this case the focal mechanisms are thrust and strike-slip faulting with both NW-SE and NE-SW compressions; distensive mechanisms are few and very much localized. The deepest seismicity (hypocentres > 35 km) is again widespread in the Apennines and above the apenninic margin, and significantly more limited in the plain. Deep earthquakes are almost all low in magnitude, consequently there are few computed focal mechanisms. Despite this, they are consistent with findings in upper structural levels. The Moho (Bigi et al., 1990; Argnani et al., 1997) is on average 5 km deeper in the plain and below the apenninic margin than in the Apennines. With this increase in depth, the hypocentres are clustered in a strongly S-dipping band. We also note an increased frequency of earthquakes S of this structure and the hypocentres are clustered along S-dipping bands, connected to the compressive structures of the surface. These bands could correspond to the main crustal faults. Lastly, we should also note the remarkable correspondence between the strike of the “boxes” (Gasperini et al., 1999) of the possible seismogenetic faults and the trending of the main recognised active structures. In particular the “boxes” along the margin and in the Apennines themselves mostly trend between NW-SE and E-W, approximately coinciding with the axial direction of the chain, while the “boxes” in the plain, between Reggio Emilia and Parma and between Bologna and Ferrara, present a more or less parallel orientation to that of the main buried active structures. As regards the Northern Apennines, there are no regional studies indicating areas with different uplift rates. The only study available (Bartolini et al., 1982), from the middle Pleistocene to Present, finds that the entire Emilia-Romagna Apennines are uplifted, but fails to distinguish areas of different growth rates. In contrast, in the Emilia-Romagna plain, which is generally subsiding, the Authors actually report minor subsidence in relation to the Ferrara ridge. Data collected allows us to identify areas which over the past 450,000 years (start of the Emilia-Romagna Upper Synthem, SERS) have been subject to different rates of uplift and subsidence. In order to quantify uplift, at least with regard to the margin and the lower Apennines, maps illustrating uplift from the start of the late Pleistocene have been compiled, based on the level of dated terraces. It emerges that along the apenninic margin, uplift is greatest between the Reno and Taro rivers and from the Bidente to the Savio rivers (> 1 mm/year). Least uplift (< 1 mm/year), meanwhile, is registered W of the Taro river and between the Santerno and Montone rivers.
Load more

Recommended publications
  • Monitoraggio Di Un Tratto Di Pianura Arginato Del Fiume Montone in Concessione Ai Fini Della Gestione Della Vegetazione Nome Latino Nome Comune Famiglia
    I progetti di Riqualificazione fluviale e Sicurezza idraulica a Forlì, città attraversata da tre fiumi Autore - Fausto Pardolesi Regione Emilia Romagna –Agenzia Regionale per la Sicurezza Territoriale e la Protezione Civile Servizio Area Romagna La planimetria rappresenta la città di Forlì, ed i fiumi che la attraversano provenienti da tre vallate appenniniche la tabella elenca: le aree di intervento specificandone il tipo, la capacità idraulica di laminazione, l’estensione interessata, la misura delle strutture arginali rimosse IV convegno italiano sulla Riqualificazione Fluviale Bologna, 22-26 ottobre 2018 Ad inizio anni ‘90 parte con il recupero all’alveo di porzioni di demanio estromesso dall’alveo con argini e occupato da coltivazioni dei frontisti. Questi primi progetti sono seguiti da altre attività tutte mirate alla laminazione, alla riqualificazione ambientale e alla fruizione. IV convegno italiano sulla Riqualificazione Fluviale Bologna, 22-26 ottobre 2018 Il Recupero delle golene al Guado Paradiso, toponimo dell’antica strada che collega la S.S. Fiumi puliti : tosco-romagnola al centro storico di Forlì. Guado Paradiso Si demoliscono per la prima volta gli argini del fiume Montone, e si ricostruiscono arretrandoli di circa 100 metri. Allo stesso modo si interviene nell’argine antistante, alla confluenza del torrente Rabbi con il fiume Montone e ancora sul fiume Montone a Terra del Sole, nel comune di Castrocaro Terme e Terra del Sole, nelle vicinanze della cittadella Medicea fortificata. Nel complesso sono oltre 10 ettari recuperati
    [Show full text]
  • Effects of Anthropogenic Land-Subsidence on Inundation Dynamics: the Case Study of Ravenna, Italy
    The spatial dimensions of water management – Redistribution of benefits and risks Proc. IAHS, 373, 161–166, 2016 proc-iahs.net/373/161/2016/ Open Access doi:10.5194/piahs-373-161-2016 © Author(s) 2016. CC Attribution 3.0 License. Effects of anthropogenic land-subsidence on inundation dynamics: the case study of Ravenna, Italy Francesca Carisi, Alessio Domeneghetti, and Attilio Castellarin School of Civil, Chemical, Environmental and Materials Engineering, DICAM, University of Bologna, Bologna, Italy Correspondence to: Francesca Carisi ([email protected]) Published: 12 May 2016 Abstract. Can differential land-subsidence significantly alter river flooding dynamics, and thus flood risk in flood prone areas? Many studies show how the lowering of the coastal areas is closely related to an increase in the flood-hazard due to more important tidal flooding and see level rise. The literature on the relationship be- tween differential land-subsidence and possible alterations to riverine flood-hazard of inland areas is still sparse, although several geographical areas characterized by significant land-subsidence rates during the last 50 years experienced intensification in both inundation magnitude and frequency. We investigate the possible impact of a significant differential ground lowering on flood hazard over a 77 km2 area around the city of Ravenna, in Italy. The rate of land-subsidence in the study area, naturally in the order of a few mm year−1, dramatically increased up to 110 mm year−1 after World War II, primarily due to groundwater pumping and gas production platforms. The result was a cumulative drop that locally exceeds 1.5 m. Using a recent digital elevation model (res.
    [Show full text]
  • San Benedetto in Alpe, Luogo Dantesco*
    San Benedetto in Alpe, luogo dantesco 93 Massimo Ragazzini San Benedetto in Alpe, luogo dantesco* I luoghi danteschi, Firenze e Ravenna principalmente, si stanno da tempo preparando per organizzare convegni e manifestazioni per il 2021, il sette- centesimo anniversario della morte del poeta. Già le celebrazioni del 1921, quelle del seicentesimo, pur svolgendosi in un momento critico della storia italiana, furono significative. Ma le iniziative del 2021 saranno certo ancora più numerose e di molto maggiore impatto. Conta molto ovviamente l’aumento esponenziale del livello di istruzione e quindi anche della conoscenza della Divina Commedia, peraltro rafforza- ta, negli ultimi anni, da efficaci iniziative di divulgazione: a un livello più colto quella di Vittorio Sermonti con i suoi libri e le sue letture pubbliche; destinata a una ricezione più ampiamente popolare quella televisiva di Roberto Benigni. Sarà anche il centosessantesimo anniversario dell’Unità d’Italia e le due celebrazioni sono destinate a trovare dei momenti di incontro. La nostra unità nazionale ha infatti la sua prima ragion d’essere nell’unità della lingua. E Dante, si sa, è considerato a buon diritto un elemento portante dell’identità letteraria e ancor più linguistica dell’Italia. In quanto padre della lingua italiana, Dante può anche essere considerato uno dei padri della nazione. Nel 2021 anche l’attenzione internazionale verso Dante sarà molto forte. Il dantista Pantaleo Palmieri ci ricorda infatti che la Divina Commedia «è a fondamento della civiltà letteraria dell’Europa tutta»1. E tra le manifestazioni previste nel 2021, si terrà proprio a Ravenna la ter- za edizione del Congresso Dantesco Internazionale, promosso dall’Uni- versità di Bologna in collaborazione con il Comune di Ravenna e con il patrocinio delle più importanti società letterarie e linguistiche impegnate * L’articolo è una parziale rielaborazione di quello pubblicato su “Annali Romagna”, supplemento della rivista “Libro Aperto”, nel febbraio del 2020.
    [Show full text]
  • The London Gazette of TUESDAY, 6Th JUNE, 1950
    jRtttnb, 38937 2879 SUPPLEMENT TO The London Gazette OF TUESDAY, 6th JUNE, 1950 Registered as a newspaper MONDAY, 12 JUNE, 1950 The War Office, June, 1950. THE ALLIED ARMIES IN ITALY FROM SRD SEPTEMBER, 1943, TO DECEMBER; 1944. PREFACE BY THE WAR OFFICE. PART I. This Despatch was written by Field-Marshal PRELIMINARY PLANNING AND THE Lord Alexander in his capacity as former ASSAULT. Commander-in-Chief of the Allied Armies in Italy. It therefore concentrates primarily upon Strategic Basis of the Campaign. the development of the land campaign and the The invasion of Italy followed closely in time conduct of the land battles. The wider aspects on the conquest of Sicily and may be therefore of the Italian Campaign are dealt with in treated, both historically and strategically, as reports by the Supreme Allied Commander a sequel to it; but when regarded from the (Field-Marshal Lord Wilson) which have point of view of the Grand Strategy of the already been published. It was during this- war there is a great cleavage between the two period that the very close integration of the operations. The conquest of Sicily marks the Naval, Military and Air Forces of the Allied closing stage of that period of strategy which Nations, which had been built up during the began with the invasion of North Africa in North African Campaigns, was firmly con- November, 1942, or which might, on a longer solidated, so that the Italian Campaign was view, be considered as beginning when the first British armoured cars crossed the frontier wire essentially a combined operation.
    [Show full text]
  • Field Data and Regional Modeling of Sediment Supply to Emilia-Romagna’S River Mouths
    E3S Web of Conferences 40, 04002 (2018) https://doi.org/10.1051/e3sconf/20184004002 River Flow 2018 Field data and regional modeling of sediment supply to Emilia-Romagna’s river mouths Silvia Cilli1,*, Paolo Billi2, Leonardo Schippa3, Edoardo Grottoli1, and Paolo Ciavola1 1Department of Physics and Earth Sciences, University of Ferrara, Italy. 2International Platform for Dryland Research and Education (IPDRE) , Tottori University, Japan. 3 Department of Engineering, University of Ferrara, Ferrara, Italy. Abstract. The Fiumi Uniti and Savio rivers are two small sandy-bed river systems which sediment yield contributes feeds part of the Emilia- Romagna beaches (Italy). Since the twentieth century the northern Adriatic coast has been affected by well-known beach retreat phenomena. As the sediment supply of these local rivers is not well known, an analysis of bed- load transport rates for the last 10 kilometres of the river has been done. Multiple analysis, supported by direct field measurements of the 2005-06 and 2017 years (still ongoing) have been realized. Complementary hydraulic investigation and modelling have been performed. Repeated bed- material samplings have been carried out during different flood conditions, obtaining a significant number of observations. Aiming at defining the behaviour of sediment-transport in these two rivers, this paper focuses on the analysis of threshold sediment transport condition. Several formulae available in literature were used to test the field measurements. All these criteria seem inappropriate to predict the threshold conditions for bed particle entrainment in terms of the value of bed shear stress. The inaccurate estimation given by these formulae is due to the fact that they do not consider natural grain-shape factors or are mainly suitable for gravel-bed rivers.
    [Show full text]
  • Atlas of Italian Irrigation Systems
    Atlas of Italian Irrigation systems Edited by Raffaella Zucaro Atlas of Italian Irrigation systems Edited by Raffaella Zucaro April 2014 “Not everything that counts can be counted and not everything than can be counted, counts” (Albert Einstein) ATLAS OF ITALiaN IRRIGATION SYSTEMS 2014. A traslated version of the “Atlante Nazionale dell’irrigazione” Roma, INEA 2011 Editor: Raffaella Zucaro Editorial staff: Antonella Pontrandolfi (Coordinator), Gian Marco Dodaro, Cristina Gallinoni, Ciro Luca Pacicco and Michele Vollaro. Technical team supporting editorial staff: Antonio Gerardo Pepe (Coordinator), Simona Capone and Fabrizio Mirra. Graphic Design and Layout: Fabio Lapiana Publishing Coordination: Benedetto Venuto Publishing Secretary: Roberta Capretti English Translation: Laura Maurano Introduction of the President of INEA The agricultural development of different areas in to support decision making. In fact, since the nineties Italy has been closely associated with access to water. INEA, on the base of precise guidelines received from Crop Irrigation systems have always been an asset in the European Commission and the Italian Ministry of terms of revenue and employment. These are the main Agriculture, has resumed its research on these issues reasons why in 1961, on the occasion of the 100th an- through specific surveys. The surveys, starting from niversary of the Italian Unification, the Italian Ministry portraying the need for general knowledge updating re- of Agriculture started up a specific survey entrusted lated to water use in agriculture (irrigated crops, ir- to INEA on Italian irrigation and the possible develop- rigation schemes, economic and managerial aspects ments of the sector in the different Italian regions, which etc.), delve into new research issues, such as public sec- led to the publication of the ‘Map of Irrigation in Italy’.
    [Show full text]
  • Ons Was Under Strength
    - 27 - Artillery of both' these divisions was under strength. The enemy's tactics a~e also worthy of mention. His custom was to fight a stiffdslaying action on sach rivsr lins until our forces stopped to regroup, when he would b~eak ·~ontaot and withdraw to the next defendable 11ne and await our attaok. During the. early evening of 1 Dec, 356 Inr Dlv, which had besn resisting fiercely throughout the last week of Novemper, onoe more adopted these taotios and d1Ben~~ed on the front'taken over that day by 1 Inf Div. ("CHUCKLE Introduction, 'pp 9 - 10; C.I;G.S. Summary Italy, 30 Nov 44; W.D" G.S., H.Q. 1 Cdn Corps, No~ember 1944: Appx 37, lnt Summary No. 165, 29 Nov 44) 1 CDN INF DIV (3 CDN INF BDE) ADVANCE TO THE LAMONE, 2 - 5 DEC 44 52. At the Teatro Dante in Rlccione, on 25.Nov, Brigadier Smi th, the ac ting G. O. C:, 1 Cdn Inf Div" held a oonferenoe of the officers of his divisional staff and of brigade groups down to and inoluding company and squadron commandors and discussed his plan for the forthcoming operations. The divisional plan called for the operation to be carded out in four phases. (See Map 1). In Phsse I, 3 Cdn Inf Bde would launoh an attack designed tc capture Russi and foroe a bridgehead over the.Lamone River. The start line for this phase of the operations would be flex­ ible and would depend on the line reached by 10 Ind Div in its ourrent operation west of the Montone River.
    [Show full text]
  • Man-Waters Interactions in the Po River Delta Emilia-Romagna Sector
    Stefano Piastra Man-Waters Interactions in the Po River Delta Emilia-Romagna Sector Land Reclamations: Geo-Historical Issues in a Global Perspective International Conference University of Bologna May 14th, 2010 Field Trip Guidebook 3 Man-Waters Interactions in the Po River Delta – Emilia-Romagna Sector Field Trip was organized in the framework of the International Conference Land Reclamations: Geo- Historical Issues in a Global Perspective, held at the University of Bologna (Italy) on May 14th, 2010. The scientific event was sponsored by the Institute of Advanced Studies (ISA), University of Bologna, in the framework of ISA Topic Grant 2010 Water Resources Management: old and new Approaches (coordinators Carlo Cencini and Franco Cazzola). Land Reclamations: Geo-Historical Issues in a Global Perspective International Conference Organizing Committee: Franco Cazzola, Carlo Cencini, Stefano Piastra (University of Bologna, Dept. of History, Anthropology and Geography). Revision of the texts: Katarzyna Lapinska, Tammy McCarron. Italian Army Geographical Institute (IGM) maps are published under licence no. 6568 (March 16th, 2010). ________________________________ On the binding: “Umana” dewatering pump, dating to the ‘30s of the 20th century. Anita, Argenta Municipality (Ferrara Province, Northern Italy). Photo: S. Piastra, 2010. On the binding background: Comacchio wetlands (Po River Delta, Ferrara Province, Northern Italy) from a map dating to 1851. Source: REGIONE EMILIA -ROMAGNA , IBC EMILIA -ROMAGNA , Uso del Suolo Storico. Carta Storica Regionale, DVD, 2007. 4 Contents Introduction p. 7 The historical evolution of the Po River Delta p. 7 From a wetland to an agricultural zone: the development of land reclamations in the Emilia-Romagna sector of the Po River Delta (second half of the 19th-‘70s of the 20th century) p.
    [Show full text]
  • Nuovi Dati Sul Neurotteri Dell'alto Appennino Romagnolo
    Boll. 1st. ¡;;nt. "G. Crandi" Univ. Bologna, 48: 171-183, 1994. ROBERTO A. PANTALEONI(*), GUIDO CAMPADELLI(**), GUIDO CRUDF.LE(***) (*) Istitllto di Entomologia Agraria dell'Universita di Sassari (**) Istituto di Entomologia "G. Grandi" dell'lJniversila di Bologna (***) Riserve Natllrali Casentinesi - Pratoveechio (AR) Nuovi dati SUl Neurotteri dell'alto Appennino romagnolo. (1) (Lavoro esegllito col contributo del CN H) La Romagna puo considerarsi a buon merito la regione italiana meglio cono­ sciuta per quanto riguarda la propria Neurotterofauna. Ai vecchi elenchi di Lacroix (1925), di Navás (1930) e di Zangheri (1966), cui andrebbero aggiunte varíe segnalazioni sparse qua e la in bibliografía, hanno infatti fatto seguito le recenti ricerche di Pantaleoni (1988, 1990a, b, c, d, e). Fra i vari comprensori romagnoli, poi, l'alto Appennino e forse il piu esplorato e studiato. NonosLante ci() il materiale raccolto da uno di noi (CC) in almeno sei stagioni di ricerche faunistiche (a cui vanno ad aggiungersi vecchi reperti di anni ancora precedenti) ha assunto ormai una mole ed un interesse tali da non poter piu esse­ re trascurato. Con la pubblicazione di questi dati si intende inoltre eontribuire ad una piu precisa conoscenza della distribuzione dei Neurotteri in ambito regionale. Se infat­ ti da un lato possediamo, come si e detto, elenchi faunistici regionali sufficiente­ mente completi, assai lacunose sono le nostre conoscenze circa la presenza de He singole specie nelle diverse aree della Romagna. MATERIALI E METODl 1 materiali inediti sottoelencati provengono in massima parte dalle ricerche faunistiche condotte negli anni 1988-93 da Cuido Campadelli, a cui si aggiungo­ no raccolte saltuarie degli Autori eseguite nei quattro anni precedenti (1984-87).
    [Show full text]
  • Bollettino Delle Fonti Idriche in Agricoltura N. 3 Del 17.Marzo.2021
    n° 3 di mercoledi 17/03/2021 Sommario settimana dal 17/03/2021 al 22/03/2021 Riassunto Fattori comprensoriali comuni Fonti di approvvigionamento Fiume PO livello idrometrico presso località Pontelagoscuro -4,70 sul livello del mare Fiume PO livello presso opera di presa impianto "Palantone" Condizione ORDINARIA Canale Emiliano Romagnolo - livelli e malfunzionamenti Condizione ORDINARIA tendenza rispetto settimana livello idrometrico Corsi d'acqua comprensoriali precedente attuale Fiume Ronco - Stazione di Coccolia Livello in m. 0,63 Fiume Montone - Stazione di Ponte Vico Livello in m. 0,42 Torrente Bevano - Stazione di S.Zaccaria Livello in m. 0,33 Fiume Lamone - Stazione di Sarna Livello in m. 0,54 Fiume Ronco Bidente - Stazione di Meldola Livello in m. - 0,07 Fiume Montone - Stazione di Castrocaro Livello in m. 0,38 Fiume Savio - Stazione di San Carlo Livello in m. - 0,8 Stato impianti consorziali vedi specifiche all'interno Fattori agricoli Piovosità cumulata Condizione CARENZA Acqua disponibile nel terreno Condizione CARENZA Livello falda Condizione CARENZA Qualità delle acque n.p. Precipitazioni cumulate settimanale (mm) vedi specifiche all'interno Temperature e precipitazioni: osservate e previste vedi specifiche all'interno Calcolo fabbisogno idrico da IRRIFRAME coltura BIETOLA DA SEME data prossima irrigazione: 05/04/2021 Bollettino dello Stato delle Fonti Idriche in agricoltura 1 n° 3 di mercoledi 17/03/2021 Fiume PO Livello fiume presso località n.p. Pontelagoscuro (quota sensore 8 m. slm) -4,70 m sul livello del mare Fonte dati: Arpa Codice linee azione del Piano Siccità Consorzio - Codice linee azione CER - Fiume PO Livello idrometrico presso Quote slm Scenari Impianto Palantone consorzio ordinario 5,13 m.
    [Show full text]
  • Ravenna, a Study by Edward Hutton</H1>
    Ravenna, A Study by Edward Hutton Ravenna, A Study by Edward Hutton Produced by Ted Garvin, Leonard Johnson and the Online Distributed Proofreading Team. RAVENNA A STUDY BY EDWARD HUTTON ILLUSTRATED IN COLOUR AND LINE by HARALD SUND 1913 TO MY FRIEND ARTHUR SYMONS IN AFFECTIONATE HOMAGE page 1 / 345 PREFACE My intention in writing this book has been to demonstrate the unique importance of Ravenna in the history of Italy and of Europe, especially during the Dark Age from the time of Alaric's first descent into the Cisalpine plain to the coming of Charlemagne. That importance, as it seems to me, has been wholly or almost wholly misunderstood, and certainly, as I understand it, has never been explained. In this book, which is offered to the public not without a keen sense of its inadequacy, I have tried to show in as clear a manner as was at my command, what Ravenna really was in the political geography of the empire, and to explain the part that position allowed her to play in the great tragedy of the decline and fall of the Roman administration. If I have succeeded in this I am amply repaid for all the labour the book has cost me. The principal sources, both ancient and modern, which I have consulted in the preparation of this volume have been cited, but I must here acknowledge the special debt I owe to the late Dr. Hodgkin, to Professor Diehl, to Dr. Corrado Ricci, and to the many contributors to the various Italian Bollettini which I have ransacked.
    [Show full text]
  • Calendario Pesca Di Forli-Cesena 2020/2021
    CALENDARIO PESCA DI FORLI-CESENA 2020/2021 BACINO IDROGRAFICO DEL FIUME LAMONE SOTTOBACINO DEL FIUME MARZENO – TRAMAZZO ZONA DI PROTEZIONE DELLE SPECIE ITTICHE Torrente Tramazzo - tratto compreso fra la passerella di Molino Mi- nosse (a valle) e il ponte del Convento (a monte), incluso l'af- fluente Rio Tuzzano dalla confluenza alle sorgenti - in acque “C”. DIVIETO DI PESCA DALLE ORE 19 DELLA PRIMA DOMENICA DI OTTOBRE ALLE ORE 6 DELL’ULTIMA DOMENICA DI MARZO. ZONA DI PROTEZIONE INTEGRALE Divieto permanente di pesca Ponte - (all'interno del Parco Nazionale delle Foreste Casentinesi) - Dalle sorgenti del Torrente Tramazzo (a monte) all'immissione nel lago di Ponte (a valle), comune di Tredozio - acque “D”. ZONE PER LA PESCA CON ESCHE ARTIFICIALI Divieto di detenzione di esemplari di fauna ittica, divieto di im- piego e detenzione di qualunque tipo di esca ad esclusione delle esche artificiali, purché munite di un solo amo e prive di ardi- glione. È vietato altresì l'uso e detenzione del cestino. Fosso del Bagno e affluenti - tratto compreso fra le sorgenti (a monte) e il punto di confluenza nel torrente Tramazzo (a valle), comune di Tredozio - acque “D”. Fosso Pian di Stantino - tratto compreso fra la sorgente e la con- fluenza nel torrente Tramazzo, comune di Tredozio - acque “D”. BACINO IDROGRAFICO DEI FIUMI UNITI SOTTOBACINO DEL FIUME MONTONE ZONE DI RIPOPOLAMENTO E FREGA Divieto permanente di pesca. Fiume Montone - dall'immissione dello scolo Cerchia a Nord-Ovest dell'abitato di Forlì (a monte) alla carraia che dal fondo Cassirano conduce al fiume (a valle) - lunghezza di km 2 circa - acque “B”.
    [Show full text]