DOCSLIB.ORG

Analysis and Control of Elastic Waves in Phononic Structures of Poroelastic Inclusions in a Fluid Athina Alevizaki

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Analysis and Control of Elastic Waves in Phononic Structures of Poroelastic Inclusions in a Fluid Athina Alevizaki Analysis and control of elastic waves in phononic structures of poroelastic inclusions in a fluid Athina Alevizaki To cite this version: Athina Alevizaki. Analysis and control of elastic waves in phononic structures of poroelastic in- clusions in a fluid. Acoustics [physics.class-ph]. Normandie Université, 2018. English. NNT: 2018NORMLH24. tel-01960865 HAL Id: tel-01960865 https://tel.archives-ouvertes.fr/tel-01960865 Submitted on 19 Dec 2018 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. THESE Pour obtenir le diplôme de doctorat Acoustique Préparée au sein de l’Université Le Havre Normandie En partenariat international avec l’Université Nationale et Kapodistrienne d’Athènes GRÈCE Analysis and control of elastic waves in phononic structures of poroelastic inclusions in a fluid Présentée et soutenue par Athina ALEVIZAKI Thèse soutenue publiquement le 28/09/2018 devant le jury composé de Directeur de Recherche CNRS, IJLRA, M. Jean-Marc CONOIR Président Sorbonne Université Paris Chargé de Recherche CNRS, HDR, LAUM, UMR CNRS 6613, M. Jean-Philippe GROBY Rapporteur Le Mans Université Professeur des Universités, LOMC, UMR CNRS 6294, M. Bruno MORVAN Directeur de thèse Université Le Havre Normandie M. Olivier PONCELET Chargé de Recherche CNRS, I2M, Université de Bordeaux Examinateur Maître de Conférences, LOMC, UMR CNRS 6294, M. Pascal REMBERT Encadrant Université Le Havre Normandie Maître de Conférences, LOMC, UMR CNRS 6294, Mme Rebecca SAINIDOU Encadrant Université Le Havre Normandie Professeur des Universités, Section of Solid State Physics, M. Nikolaos STEFANOU Directeur de thèse Université Nationale et Kapodistrienne d’Athènes M. Jérôme VASSEUR Professeur des Universités, IEMN Rapporteur Thèse dirigée par Bruno MORVAN, laboratoire LOMC UMR CNRS 6294 et co-dirigée par Nikolaos STEFANOU, Section of Solid State Physics, Université Nationale et Kapodistrienne d’Athènes i What lies ahead us and what lies behind us is nothing compared to what lies within us... ii iii Preface This dissertation was conducted under the collaboration of two universities: the Uni- versity of Le Havre Normandy and the National and Kapodistrian University of Athens, and I was engaged in researching and writing it from September 2015 to July 2018. I would like to thank my supervisors, Professor Nikolaos Stefanou from the National and Kapodistrian University of Athens, Department of Physics, section of Solid State Physics and Professor Bruno Morvan, Maître de conférences Rebecca Sainidou and Maítre de con- férences Pascal Rembert from the university of Le Havre Normandy, Laboratoire Ondes et Milieux Complexes (LOMC) UMR CNRS 6294, for their excellent guidance and support during this process. They have been my mentors throughout all those years, with their pa- tience and understanding they were able to shape my mind into that of a scientist, teaching me how to reason. Special thanks are owed to Dr. Sainidou and Dr. Rembert, not only for being my primary guides but also for their emotional support and friendly treatment. PhD students are often motivated to pursue the PhD by scientific and humanistic curiosity, the desire to contribute to the academic community, service to others, or personal development. For me all these reasons are summed up to the original Greek meaning of the Doctor of Philosophy, which is “love of wisdom”. The long days spent in the lab, battling shoulder to shoulder with my fellow scientists and friends, the joy for the synthesis, the hope for good results and the sadness and tiredness with each failed attempt, are all characteristics of this process. So, here I would like to thank my colleagues who shared this experience with me, PhD students Petros Pantazopoulos and Adamantia Kosma and Dr. Aristi Christofi. The realization of this PhD would not have been possible without the financial support of the SUPERMEN project, through a postgraduate fellowship. This project is co-financed by the European Union through the European Regional Development Fund and by the Conseil Regional de Haute Normandie. A special thanks to Professor Pascal Pareige, deputy director of LOMC for his help and support in all administrative aspects during my PhD thesis. This thesis is dedicated to my family. If I ever lost interest, they kept me motivated. My parents deserve a particular note of thanks: your wise counsel and kind words have, as always, served me well. A.A. iv v Résumé Dans le présent document de thèse, une extension de la méthode de calcul de la dif- fusion multiple stratifiée est développée en y incluant des structures phononiques àbase de diffuseurs sphériques poroélastiques saturés immergés dans un fluide, en combinant la théorie de Biot avec le formalisme de diffusion multiple. La méthode est alors appliquée à une étude théorique, bien au-delà de l’approximation à grandes longueurs d’onde d’un mi- lieu effectif, de la réponse acoustique d’un milieu granulaire à double porosité saturé, formé d’un réseau cristallin compact de sphères poreuses rigides ou molles. On montre que la vari- ation de la taille des pores et/ou celle de la porosité dans une gamme allant du millimètre au micromètre pour le diamètre des sphères altère d’une façon significative les spectres de transmission, réflexion, et d’absorption d’une couche plane d’épaisseur finie de ces matéri- aux. Les spectres présentés sont analysés par référence aux modes acoustiques de sphères poreuses isolées d’une part, puis par rapport aux diagrammes de dispersion des cristaux infinis correspondants. Une interprétation cohérente de la physique sous-jacente estdon- née. Ces résultats mettent en évidence l’occurrence de nouveaux modes, localisés dans la sphère, provenant des ondes longitudinales lentes propres aux milieux poroélastiques. Ces modes induisent quelques caractéristiques remarquables dans le comportement acoustique de ces matériaux à double porosité, comme des bandes d’absorption non-dispersive larges ou étroites en fréquence et/ou des bandes d’arrêt directionnel. Les propriétés acoustiques de ces structures phononiques à l’échelle sub-micrométrique, i.e. en régime hypersonique (GHz), peuvent être évaluées expérimentalement par diffusion Brillouin. Dans ce docu- ment, une approche théorique élasto-optique rigoureuse, basée sur les fonctions de Green, est proposée afin de décrire la diffusion inélastique de la lumière due aux variations spa- tiotemporelles de l’indice de réfraction du matériau induites par des phonons. Dans ce cadre des expressions analytiques de l’intensité d’un faisceau de lumière diffusé par une particule sphérique dans le vide sont dérivées, permettant ainsi d’améliorer la précision et rapidité des calculs précédents. Les grandes lignes de ce développement théorique jettent les bases pour une description rigoureuse de cet effet dans le cas de cristaux phononiques composés de particules sphériques colloïdales. vi vii PerÐlhyh Sth paroύσα διατριβή anaπτύσσετai mia epèktash thc upologisτικής μεθόδου strwmati- κής poλλαπλής skèdashc gia fwnonikèc domèc από poroelasτικά σφαιρικά s¸mata koresmèna me reustό, συνδυάζοntac th jewrÐa tou Biot me teqnikèc poλλαπλής skèdashc. H mèjodoc εφαρμόζετai sth θεωρητική melèth, pèran thc prosèggishc ενεργού mèsou se μεγάλα μήκη κύματoc, thc akousτικής απόκριshc kokkwd¸n ulik¸n me πόρους se διπλή klÐmaka, embapti- smènwn se υγρό kai se katάσtash κόρου, pou apoτελούντai από sklhrèc ή malakèc πυκνά diatetagmènec por¸deic sfaÐrec. DeÐqnetai όti metabolèc tou megèjouc twn πόρων και/ή tou por¸douc se σφαιρικούς κόκκους diastάσεων thc tάξης tou qiliostού ή kai liγόtero tropopoiούν σημαντικά ta φάσματa dièleushc, ανάκλασης kai απορρόfhshc peperasmènwn plakidÐwn aut¸n twn ulik¸n. Ta φάσματa pou upologÐzontai αναλύοntai αναφορικά tόσο me tic katastάσειc tou akousτικού pedÐou stouc por¸deic σφαιρικούς κόκκους, όso kai me sqe- τικά διαγράμματa διασποράς antÐstoiqwn άπεirwn krustάλλων, parousiάζοntac mia συνεπή ermhneÐa twn υπεύθυνων fusik¸n mhqanism¸n. Ta apotelèsmata mac deÐqnoun thn ύπαρξη nèwn katastάσεων, entopismènwn stic sfaÐrec, oi opoÐec ofeÐlontai sta αργά διαμήκη κύματa pou eÐnai Ðdio qarakthrisτικό twn poroelastik¸n mèswn. Stic katastάσεic autèc ofeÐlontai κάποια axioshmeÐwta qarakthrisτικά thc akousτικής συμπεριφοράς twn υπό melèth ulik¸n me πόρους se διπλή klÐmaka, όπως eureÐec ή stenèc z¸nec απορρόφησης και/ή χάσματa dièleushc se sugkekrimènec διευθύνσειc. Oi akoustikèc ιδιόthtec fwnonik¸n (upo)mikrodom¸n, sthn perioχή twn άπω υπερήχων (GHz), μπορούν na διερευνηθούν, en gènei, me πειράματa skèdashc fwtός Brillouin. Sthn παρούσα διατριβή akoλουθούμε mia ausτηρή πλήρως elastο-οπτική θεωρητική antimet¸pish thc anelasτικής skèdashc fwtός λόgw qwro-qronik¸n metabol¸n tou deÐkth διάθλασης tou mèsou exaitÐac twn fwnonÐwn, basismènh se συναρτήσειc Green, kai katαλήγουμε se analutikèc sqèseic gia tic entάσεic twn σκεδαζόμενων desm¸n fwtός από memonwmèna σφαιρικά swmatÐdia sto κενό, belti¸nontac ètsi thn apotelεσματικόthta kai thn akrÐbeia προηγούμενων upologism¸n. To plaÐsio autό apoteleÐ epÐshc th βάση gia mia ausτηρή periγραφή tou fainomènou gia fwnoνικούς
Load more

Recommended publications
  • Jef Last's Zuiderzee: the Price of Progress
    rI ! BASIL D. KINGSTONE, UNNERSITY OF WINDSOR I I Jef Last's Zuiderzee: The Price of Progress Jef Last was born in the Hague in 1898, the son of a of 1916 which finally leads the government to close off ship's captain. He attended Leiden University and the Zuiderzee, thr.ough the long hard struggle to connect studied Chinese, but while there he joined the socialist Wieringen to Holland, the closure of the Wieringermeer party, and his father promptly cut off his allowance. As and the creation of the Northwest Polder in 1930, and a result he took a variety of jobs during the 1920s, and the completion of the Afsluitdijk in 1932, to an undated in his choices we can see his future interests. His (and presumably imaginary) record-breaking storm and solidarity with the workers no doubt led him to protest flood which the great dyke successfully withstands. We at conditions in a textile mill where he worked, because see the lives, through this long period, of many people, there was a strike and he was fired. He was also a sailor but principally of the two fishermen Toen and Auke; in the merchant marine, and in later years he worked for Toen's sister Sistke and her second husband Wibren the seamen's union called the International Transport Sibesma, a Friesian peasant; his sister Boukje, and Federation. Once in New York he was a travelling another in-law, the engineer Brolsma, who is in charge salesman for a photographic portrait studio called of the dyke-building.
    [Show full text]
  • Dear Supervisors- Attached Please Find Our Letter of Opposition to the SCA Ordinance for Sleepy Hollow As Drafted by Our Attorne
    From: Andrea Taber To: Rice, Katie; Kinsey, Steven; Adams, Susan; Arnold, Judy; Sears, Kathrin Cc: Dan Stein; Thorsen, Suzanne; Lai, Thomas Subject: Sleepy Hollow Homeowners Association Letter of Oppostion to the SCA Ordinance Date: Wednesday, May 22, 2013 8:12:53 PM Attachments: Document4.docx Dear Supervisors- Attached please find our letter of opposition to the SCA Ordinance for Sleepy Hollow as drafted by our attorney Neil Moran of Freitas McCarthy MacMahon & Keating, LLP. Sleepy Hollow Homeowners Association May 3, 2013 Board of Supervisors of Marin County 3501 Civil Center Drive San Rafael, CA 94903-4157 Re: Stream Conservation Area (SCA) Proposed Amendments to the Development Code Honorable Members of the Board of Supervisors: INTRODUCTION The Sleepy Hollow Homes Association (SHHA) objects to the proposed changes to Chapters 22.33 (Stream Protection) and 22.63 (Stream Conservation Area Permit) as they would apply to the residents of the unincorporated portion of San Anselmo known as Sleepy Hollow. We ask that the County exempt and/or delay implementation of any changes to Chapters 22.33 and 22.63 as to the city-centered corridor streams, including Sleepy Hollow. The SHHA supports implementation of the proposed amendments to the San Geronimo Valley, to protect wildlife habitat in streams where Coho Salmon currently exist. The SHHA supports regulations to ensure the health and survival of the species in these areas. The SHHA recognizes the urgency of this matter to the San Geronimo Valley, both for the survival of the endangered and declining Coho population and for the property rights of the affected residents who are currently subject to a building moratorium.
    [Show full text]
  • Quantifying Rocky Coastline Evolution in North Torbay, Devon
    Quantifying Rocky Coastline Evolution in North Torbay, Devon, using 36Cl Exposure Dating and Structure-from-Motion Photogrammetry Drone image of Hopes Nose captured with an eBee drone, used within this study. Submitted by Victoria Rose Naylor, to the University of Exeter as a dissertation for the degree of Masters by Research in Geography, April 2019. This dissertation is available for Library use on the understanding that it is copyright material and that no quotation from the dissertation may be published without proper acknowledgement. I certify that all material in this dissertation which is not my own work has been identified and that any material that has previously been submitted and approved for the award of a degree by this or any other University has been acknowledged. ……………………………………………………………………………… i Abstract Around 70-80% of the world’s coastline, and around 60% of the UK’s coastline, can be considered as ‘rocky’. Rocky coasts erode much slower than their softer sedimentary counterparts, but their rates of erosion and their evolutionary history are poorly known. In this dissertation I use a new combination of methods, cosmogenic nuclide exposure dating, structure-from-motion photogrammetry and sea-level modelling, to study a typical stretch of rocky coastline in north Torbay, Devon, southwest England. Torbay’s coast is characterised by the presence of shore platforms and raised beaches above modern sea level, situated on the north headland peninsula, named Hopes Nose. These elevated landforms must relate to a previous interglacial period, with warmer environments and higher sea- levels, and their preservation indicates very slow rates of coastal evolution within the area.
    [Show full text]
  • Mapping and Distribution of Sabella Spallanzanii in Port Phillip Bay Final
    Mapping and distribution of Sabellaspallanzanii in Port Phillip Bay Final Report to Fisheries Research and Development Corporation (FRDC Project 94/164) G..D. Parry, M.M. Lockett, D.P. Crookes, N. Coleman and M.A. Sinclair May 1996 Mapping and distribution of Sabellaspallanzanii in Port Phillip Bay Final Report to Fisheries Research and Development Corporation (FRDC Project 94/164) G.D. Parry1, M. Lockett1, D. P. Crookes1, N. Coleman1 and M. Sinclair2 May 1996 1Victorian Fisheries Research Institute Departmentof Conservation and Natural Resources PO Box 114, Queenscliff,Victoria 3225 2Departmentof Ecology and Evolutionary Biology Monash University Clayton Victoria 3068 Contents Page Technical and non-technical summary 2 Introduction 3 Background 3 Need 4 Objectives 4 Methods 5 Results 5 Benefits 5 Intellectual Property 6 Further Development 6 Staff 6 Final cost 7 Distribution 7 Acknow ledgments 8 References 8 Technical and Non-technical Summary • The sabellid polychaete Sabella spallanzanii, a native to the Mediterranean, established in Port Phillip Bay in the late 1980s. Initially it was found only in Corio Bay, but during the past fiveyears it has spread so that it now occurs throughout the western half of Port Phillip Bay. • Densities of Sabella in many parts of the bay remain low but densities are usually higher (up to 13/m2 ) in deeper water and they extend into shallower depths in calmer regions. • Sabella larvae probably require a 'hard' surface (shell fragment, rock, seaweed, mollusc or sea squirt) for initial attachment, but subsequently they may use their own tube as an anchor in soft sediment . • Changes to fish communities following the establishment of Sabella were analysed using multidimensional scaling and BACI (Before, After, Control, Impact) design analyses of variance.
    [Show full text]
  • Evidence from Sediments
    THE IMPRINT OF ANTHROPOGENIC ACTIVITY VERSUS NATURAL VARIABILITY IN THE FJORDS OF KIEL BIGHT: EVIDENCE FROM SEDIMENTS Dissertation zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakultät der Christian-Albrechts-Universität zu Kiel vorgelegt von ANNA NIKULINA Kiel 2008 Front cover design by Igor Polovodov, St.Petersburg, Russia Referent: Prof. Dr. Wolf-Christian Dullo Koreferent: Prof. Dr. Anton Eisenhauer Tag des Disputation: 3.11.2008 Zum Druck genehmigt: Kiel den 3.11.2008 Der Dekan Prof. Dr. Lutz Kipp To my mama who always knows the way to cheer me up Summary The fjords of Kiel Bight have been inhabited for centuries and thus exposed to long-term anthropogenic influence. The fjords have restricted water exchange as reflected in periodical hypoxia. Overall, the fjords have a high buffer capacity accumulating organic matter and metals in sediments. The sediments contribute to the supply of recycled nutrients for phytoplankton, but they also may be a source of toxic compounds for benthic organisms. The deoxygenation of sediments leads to a diminution of the benthic fauna and a breakdown of the food chain. Therefore, the sediments reflect the state of the local marine system and present a valuable tool for the assessment of the environment, at present time and for the past. The objective of this study was to determine whether anthropogenic activity over the last century has left the traces in the sediments of Kiel and Flensburg Fjords where sewage discharge, shipyards, and harbours are of major importance. Further questions addressed were how the anthropogenic impact superimposes over the natural variations in Kiel and Flensburg Fjords, and what the main factors controlling the accumulation of pollutants are.
    [Show full text]
  • A Marine Spatial Plan for the Belgian Part of the North Sea 82
    Something is moving at sea… A marine spatial plan for the Belgian part of the North Sea 82 A sea of busyness .........................................................................................................................................................................3 A marine spatial plan? ...........................................................................................................................................................4 Nature conservation ..................................................................................................................................................................6 INHOUD Energy, cables and pipelines .........................................................................................................................................8 Shipping, ports and dredging ...................................................................................................................................10 Fisheries and aquaculture .............................................................................................................................................12 Sand and gravel exploitation ....................................................................................................................................14 Coastal protection ....................................................................................................................................................................14 Military use .......................................................................................................................................................................................16
    [Show full text]
  • Travel Information on the Amsterdam Ij
    TRAVEL INFORMATION ON THE AMSTERDAM IJ Additionally, some information about your trip. See the boat Abel Tasman again on the website. Port of Depature Sumatrakade 1, Amsterdam Route and directions www.naupar.com/download/Amsterdam-Sumatrakade-NL.pdf Embarkation and disembarkation Please note that your order confirmation and (possible) purchased discount vouchers serve as an admission ticket. Take it on board and hand it over to the skipper or shipmate. You are expected to gather half an hour before the start of the trip at the designated pickup location, in your case at 13.30 p.m. Data of the skipper, Mr G. Veldhuizen If you have any questions, please contact the skipper of the Abel Tasman by phone under +31 6-51838870. Additional costs and details The tour price includes three hours on the Amsterdam IJ. Drinks and snacks are available for purchase. It is not allowed to bring own refreshments on board. If you have booked the optional barbecue in advance on our website, you can enjoy the delicious barbecue meal. Journey You can reach the port of departure well by public transport and by car. For more information visit www.9292.nl/en or www.ns.nl/en/travellers/home or call the local travel Netherlands telephone +31 (0) 900 9292 (€ 0.70 per minute). Do you come to Amsterdam by car? Please read the following paragraph. Parking P +R Zeeburg Parking in Amsterdam is quite expensive. Therefore we recommend you the P +R Zeeburg. The parking fee is also a tram ticket for up to five people.
    [Show full text]
  • Adaptive Strategies and the Rotterdam Floodplain Han Meyer, Willem Hermans, TU-Delft
    October 6th, 2009 Adaptive strategies and the Rotterdam floodplain Han Meyer, Willem Hermans, TU-Delft Introduction Driven by the increasing concern with the natural environment and by considerations on the effects of climate-change, ‘working with nature’ has become a new paradigm in the world of Dutch planning and design. This paradigm is linked to the theory of the ‘layer-approach’, which was meant to understand the complex system of the urbanized delta and to develop sustainable spatial interventions in this system. In practice, during the last 15 years a design-approach has been developed which emphasizes the layer of the natural system and sub-soil. However the results of this approach for the layers of infrastructures and urban patterns are not clear and subject of controversies. This is especially clear when the possibilities for ‘adaptive strategies’ concerning building in floodplain areas are discussed and investigated. The question with ‘adaptive strategies’ is: should we take the existing flood-defense systems ‘for granted’, or is possible (and desirable) to take into consideration quite different options concerning the relation between ‘behind the dikes’ and ‘outside the dikes’ – with other words: should we reconsider the relation between floodplain-area and protected urban area? The meaning of this question will be illustrated with a design-research in the Rotterdam-region. 1 Rotterdam - aerial view looking to the west, 2006 2 International comparison Compared with other European deltas, the Dutch delta and especially the case of Rotterdam can be considered as a specific case. This is especially clear when we study the importance of the dike-systems in relation to the flood-plain areas.
    [Show full text]
  • Active Management Is Required to Turn the Tide for Depleted Ostrea Edulis Stocks from the Effects of Overfishing, Disease and Invasive Species
    Active management is required to turn the tide for depleted Ostrea edulis stocks from the effects of overfishing, disease and invasive species Luke Helmer1, Paul Farrell1, Ian Hendy1,2, Simon Harding2,3, Morven Robertson2 and Joanne Preston1 1 Institute of Marine Sciences, University of Portsmouth, Portsmouth, Hampshire, UK 2 Blue Marine Foundation, London, UK 3 Current affiliation: Institute of Marine Resources, The University of the South Pacific, Suva, Fiji ABSTRACT The decline of the European oyster Ostrea edulis across its biogeographic range has been driven largely by over-fishing and anthropogenic habitat destruction, often to the point of functional extinction. However, other negatively interacting factors attributing to this catastrophic decline include disease, invasive species and pollution. In addition, a relatively complex life history characterized by sporadic spawning renders O. edulis biologically vulnerable to overexploitation. As a viviparous species, successful reproduction in O. edulis populations is density dependent to a greater degree than broadcast spawning oviparous species such as the Pacific oyster Crassostrea (Magallana) gigas. Here, we report on the benthic assemblage of O. edulis and the invasive gastropod Crepidula fornicata across three actively managed South coast harbors in one of the few remaining O. edulis fisheries in the UK. Long-term data reveals that numbers of O. edulis sampled within Chichester Harbour have decreased by 96%, in contrast numbers of C. fornicata sampled have increased by 441% over a 19-year period. The recent survey data also recorded extremely low densities of O. edulis, and extremely high densities of C. fornicata, Submitted 24 July 2018 within Portsmouth and Langstone Harbours.
    [Show full text]
  • Port Phillip, First Survey and Settlement Of
    1878. VICTORIA. PORT PHILLIJPo FIRST SURVEY AND SETTLEMENT OF. RETURN to an Order of the Legislative A,s8tmOly, Dated 14th August 1878, for- COPIES of certain recently discovered historical records respecting the first Survey and subsequent Settlement of Port Phillip Heads, formed under Lieutenant-Governor Collins in 1803. (Mr. O'Hea.) Ordered by the Legislative Assembly to he printed, 21st Novemher 18'18. CONTENTS. I.-Letter to the Honourable Graham Berry, II.-Prefatory note by the Editor. III.-Journal of Exploration of Port Phillip made by Charles Grimes, Surveyor· General of New South Wales, 1802-3. IV.-Order Book of Lieutenant-Governor Collins during the stay at Port Phillip, 1803-4. V.-Journal of the Rev. Roht. Knopwood, Chaplain to the Settlement. From 24th April 1803 to 31st December 1804. Portrait of Lieutenant-Governor Collins. " Captain W oodrifl', R.N., aM.S. Calcutta. Rev. Robert Knopwood. Mr. James Hobbs. Fac "simile Chart of the Survey of Port Phillip, by Grime!!. Sketch.-The Heads of Port Phillip. [.I!pprorimatf Oost qf Paper.-I'reparatlon, not given; Printing, &e. (715 copies), £121 5s. Od.] )!Iy auttllttty: JOlIN FERRES, GOVERNMJ!:NT PRINTER, MELBOURNE, C.-No. 15. MRo SHILLINGLAW TO THE HONe THE CHIEF SECRETARYo TO THE HONOURA,BLE GRAHAM BERRY, PREMIER OF VICTORIA. SIR, The documents now submitted to you may fairly be called the First Annals of this colony. They are important as being official records, and they set at rest some points which have hitherto been in dispute or doubt regarding the settlement attempted by Governor Collins at Port Phillip Heads three quarters of a century ago.
    [Show full text]
  • The Ij-Plein: Housing at the Threshold of Urban Policies
    VIEWPOINT MEGARON 2015;10(3):273-281 DOI: 10.5505/MEGARON.2015.24008 The Ij-plein: Housing At The Threshold of Urban Policies Esen Gökçe ÖZDAMAR Introduction tiaanse, 2003). The plan was developed by various ar- The IJ-plein in the north of Amsterdam is an exam- chitects from seven architectural firms with allocations ple of a cinematic dialogue between the observer and “according to 22 classic systems devised by architects a fragmented urban narrative. The IJ-plein, being the including Le Corbusier, Jan Duiker and Lotte Stam- first work of the Office for Metropolitan Architecture Beese”. Here OMA created two patterns consisting of (OMA) waterfront residential development forms its urban character and villas in the western and eastern narrative through creating strategies in structuring the parts.2 The polder area had been an industrial fringe center and the periphery of the city in a time when area before the bankruptcy of the Amsterdam Dry turnabout in urban policies were shaping Amsterdam. Dock Company (Amsterdamse Droogdok Maatschap- The IJ-plein is one of the signs of today’s and major pij) (Figures 2–6). Following policies for a more com- residential waterfront areas and can be read regarding pact city, the municipality of Amsterdam opened the its spatio-temporal context (Figure 1). old docklands and shipyards to regeneration, replacing the former overspill policy. The 1985 Structure Plan of There is a relationship between the condition of Amsterdam suggested that waterfront redevelopment Koolhaas’s buildings and their environment: the build- along the IJ would help meet the city’s housing chal- ings are not passive wrappings that are viewed, but lenge and attract people from all income groups.
    [Show full text]
  • The Dikes of the Polders in the Ijsselmer
    CHAPTER 52 THE DIKES OF THE POLDERS IN THE IJSSELMER M. Klasema CH.de Jong senior engineers Service of the Zuiderzee Works, The Hague, Netherlands ABSTRACT Since the circumstances on the Usselmeer will change by the reclamation works, observations on the present lake cannot direct- ly be used for the determination of the cross-sections of the dikes protecting the reclaimed land. The method of obtaining the necessary data (water level, wave attack) is discussed, as well as the determination of the design level. A reasoned description is given of a typical cross-section of a polderdike. INTRODUCTION The Zuiderzeeproject comprises the enclosure of the Zuider- zee, a large shallow estuary (mean depth 3,5 m) of the North Sea, and partial reclamation of the enclosed area (fig. 1). The enclos- ing dam separating the Zuiderzee from the North Sea was completed in 1932. By building this dam the safety as well as the water management of the hinterland has been improved. The reclamation started in 1928 and is still in full progress. When completed, 2300 km2 of arable land, divided over 5 polders, will be added to the landarea of the Netherlands. The reclaimed land is situated k to 5 m below the mean level of the Usselmeer, as the remaining fresh water lake within the enclosed area is called. In view of the water management of the hinterland the minimum size of the lake has to be at least 1200 km2. The economic value of a polder of 500 km2 is more than a thousand million guilders and 50000 or more people will live in it.
    [Show full text]