Underwater Archaeology
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Stone Tidal Weirs, Underwater Cultural Heritage Or Not? Akifumi
Stone Tidal Weirs, Underwater Cultural Heritage or Not? Akifumi Iwabuchi Tokyo University of Marine Science and Technology, Tokyo, Japan, 135-8533 Email: [email protected] Abstract The stone tidal weir is a kind of fish trap, made of numerous rocks or reef limestones, which extends along the shoreline on a colossal scale in semicircular, half-quadrilateral, or almost linear shape. At the flood tide these weirs are submerged beneath the sea, while they emerge into full view at the ebb. Using with nets or tridents, fishermen, inside the weirs at low tides, catch fish that fails to escape because of the stone walls. They could be observed in the Pacific or the Yap Islands, in the Indian Ocean or the east African coast, and in the Atlantic or Oleron and Ré Islands. The UNESCO’s 2001 Convention regards this weir as underwater cultural heritage, because it has been partially or totally under water, periodically or continuously, for at least 100 years; stone tidal weirs have been built in France since the 11th century and a historical record notes that one weir in the Ryukyu Islands was built in the 17th century. In Japan every weir is considered not to be buried cultural property or cultural heritage investigated by archaeologists, but to be folk cultural asset studied by anthropologists, according to its domestic law for the protection of cultural properties. Even now in many countries stone tidal weirs are continuously built or restored by locals. Owing to the contemporary trait, it is not easy to preserve them under the name of underwater cultural heritage. -
Upper Respiratory Tract and Aural Flora of Saturation Divers
J Clin Pathol: first published as 10.1136/jcp.31.8.721 on 1 August 1978. Downloaded from Journal of Clinical Pathology, 1978, 31, 721-723 Upper respiratory tract and aural flora of saturation divers D. M. JONES AND P. DAVIS From the Department ofBacteriology, Withington Hospital, Manchester M20 8LR, UK SUMMARY The conditions of helium saturation diving promote the proliferation of Gram-negative bacterial species in the external auditory meatus of divers. These changes in flora occurred in the absence of operational diving, that is, no contact with water. The colonising bacteria were auto- genous in origin and cross-colonisation was observed between divers. On return to normal atmos- pheric conditions the aural flora became predominantly Gram-positive again within 48 hours. The slow return to normal pressures by deep-sea a high ambient temperature (30°-350C), and the divers, necessary to avoid decompression sickness, relative humidity is high. restricts the period that can be maintained at depth. Underwater exploration is a relatively new indus- This problem is overcome by the saturation diving try and by its nature is extremely dangerous. It is technique whereby the divers are maintained at high important that divers remain fit during the conduct of pressure in their living quarters and are transported a saturation dive because if a diver becomes unwell to the sea bed in a detachable diving bell. The com- the extreme slowness with which decompression can copyright. pression chamber and transfer chamber are anchored be carried out means that immediate medical atten- to the deck of an oil production platform, and the tion is not readily available. -
Notes on Diving in Ancient Egypt
A Brief History of Underwater Enterprise and Exploration The incentives to risk one’s life underwater from the earliest records of diving: 1) Subsistence and general aquatic harvest 2) Commerce/salvage 3) Warfare A sponge diver about to take the plunge, Classical Greece ca. 500 BCE The beginnings: subsistence in Ancient Egypt: skin divers netting fish in the Nile th Tomb of Djar, 11 Dynasty (ca. 2000 BCE) ‘Pull out well! (It is) a Happy day! Measure you, measure you, for you, good great fishes’ Text and image from the tomb of Ankhtifi (ca. 2100 BCE) The beginnings: other kinds of aquatic/underwater harvest: mother of pearl (left) and sponge diving (right) Mesopotamia (southern Iraq, ca. 2500 BCE) Classical Greece (ca. 500 BCE) The so-called ‘Standard of Ur’: a mosaic of lapis lazuli A sponge diver about to take the (from the exotic region of Afghanistan) and mother of plunge with a knife and a sack, the pearl (from the exotic source of a seabed), deposited in jar was also deposited in an elite tomb an elite tomb in Mesopotamia The beginnings: in search of exotic and high value things (things difficult to access/procure) Epic of Gilgamesh (composed in Mesopotamia no later than ca. 2100 BCE) records a heroic dive after a ‘plant of immortality’ on the seabed ‘He tied heavy stones *to his feet+ They pulled him down into the deep [and he saw the plant] He took the plant though it pricked his hands He cut the heavy stones from his feet The sea cast him up upon the shore’ The value of mother of pearl and sea sponge resides, in part, in the process of procuring them The beginnings: salvaging lost cargoes (lost valuable things) Scyllias and his daughter Hydna: the first professional divers known by name, famed for salvaging huge volumes of gold and silver (tribute and booty) from a Persian fleet in the Aegean that lost many ships in a storm (ca. -
Buoys, Fenders and Floats Main Catalog
s t a o l F d g n o l 5 a 5 a 9 t s 1 r a e e C c n d i n s n i - e a F M , s y o u B Polyform - the Originator of the modern Plastic Buoy 2 Polyform ® was established in Ålesund, Norway in the year of 1955 and was the first company in the world to produce an inflatable, rotomolded soft Vinyl buoy. The product was an instant success and was immediately accepted in the domestic as well as overseas markets. Products and machinery were gradually developed and improved until the first major leap forward in our production technology happened in the 1970’s and early 1980’s when specially designed, in-house constructed machinery for rotomolding of our buoys and fenders was developed and put into use. Such type of machinery at that time was truly unique in the world of molding buoys and fenders. More recent and even more revolutionary developments took place in the new millennium, by our designing and constructing of the first ever fully automated and robot assisted production machinery, built for molding of inflatable fenders. Ever since the start in 1955, our company has been committed to further expand the range and to further develop, customize and improve the individual products. Today, Polyform ® of Norway can offer the widest range of inflatable buoys and fenders , expanded foam marina fenders, purse seine floats and an extensive range of hard-plastic products for use throughout the marine industry, including aquaculture/fish-farming, offshore oil and gas industry, harbors, ships, marina industry and custom made products also for land-based applications. -
October – November
HOOD SAILMAKERS . TR1J IN At Hood we believe it's our job to provide you with the best sails to accomplish your performance goals. Our computer generated moulded sails give you lasting performance through our proven designs and durability. Results are easy to come by when you use Hood Sails. TAKE A TIP FROM THOSE WHO KNOW. "Th e co 111bi11 ario11 of lasting pe1for111a 11 ce and reliability gives us co11ti11ui11g rnccess." Mal'tin James - Team Jaguar/ lnfini ty III "Our Hood sails have given us the edge 0 11 ou r comperi tors. " Hans Somme 1· - Somm e1· Breeze "Reliability and pe1fo r111a11 ce is the kev to success. " Ra y Stone - Razo1·'s Edge "Th ey are fast a11d they last." Geoff Ross - Yendys " You ca11 't bear race wi1111i11g speed." Richal'd P e1·ini - Corinthian Doors. C•l•JD The Trusted Name in Sailmaking SAILMAKERS From the Commodore's Desk n Saturday, August 2, Aus high price events like the America's his experiences from the time he left the tralia's second biggest ocean Cup and the two or three maxi boats Merchant Navy in pursuit of just one racing event, after the Telstra that are first out of Sydney Heads on thing, winning the single-handed BOC Sydney to Hobart, started and finished Boxing Day. Round the World Race. with little more than a whimper in the There may be a case for elitism with Those of us who know Adams were press. the America's Cup. However, there is not surprised he achieved this goal This race was, of course, the Cruis little understanding that whilst these through his own resourcefulness and ing Yacht Club of Australia's XXXX big boats might be the domain of indi- tenacity and the relentless support and Sydney to Southport Race and, like viduals able to afford them, the crews commitment of his wife Caroline. -
Analysis of Recreational Closed-Circuit Rebreather Deaths 1998–2010 Andrew W Fock Abstract (Fock AW
78 Diving and Hyperbaric Medicine Volume 43 No. 2 June 2013 Analysis of recreational closed-circuit rebreather deaths 1998–2010 Andrew W Fock Abstract (Fock AW. Analysis of recreational closed-circuit rebreather deaths 1998–2010. Diving and Hyperbaric Medicine. 2013 June;43(2):78-85.) Introduction: Since the introduction of recreational closed-circuit rebreathers (CCRs) in 1998, there have been many recorded deaths. Rebreather deaths have been quoted to be as high as 1 in 100 users. Methods: Rebreather fatalities between 1998 and 2010 were extracted from the Deeplife rebreather mortality database, and inaccuracies were corrected where known. Rebreather absolute numbers were derived from industry discussions and training agency statistics. Relative numbers and brands were extracted from the Rebreather World website database and a Dutch rebreather survey. Mortality was compared with data from other databases. A fault-tree analysis of rebreathers was compared to that of open-circuit scuba of various configurations. Finally, a risk analysis was applied to the mortality database. Results: The 181 recorded recreational rebreather deaths occurred at about 10 times the rate of deaths amongst open-circuit recreational scuba divers. No particular brand or type of rebreather was over-represented. Closed-circuit rebreathers have a 25-fold increased risk of component failure compared to a manifolded twin-cylinder open-circuit system. This risk can be offset by carrying a redundant ‘bailout’ system. Two-thirds of fatal dives were associated with a high-risk dive or high-risk behaviour. There are multiple points in the human-machine interface (HMI) during the use of rebreathers that can result in errors that may lead to a fatality. -
1.0 Introduction
1.0 INTRODUCTION 1.1 MARINE RECREATION AND TOURISM IN HAWAI‘I Hawai‘i hosts approximately seven million visitors each year who spend more than US $11 billion in the state and in the last 20 years tourism has increased over 65% (Friedlander et al., 2005). More than 80% of Hawaii’s visitors engage in recreation activities in the state’s coastal and marine areas with the majority of these individuals participating in scuba diving (200,000 per year) or snorkeling (3 million per year) when visiting (Hawai‘i DBEDT, 2002; van Beukering & Cesar, 2004). Other popular marine recreation activities include ocean kayaking, parasailing, swimming, outrigger canoeing, and surfing. Coral reef areas are a focal point for much of this recreation use, but these areas are also a natural resource that has considerable social, cultural, environmental, and economic importance to the people of Hawai‘i. For example, the state’s reefs generate US $800 million in revenue and $360 million in added value each year (Cesar & van Beukering, 2004; Davidson et al., 2003). These reefs are also important for local residents, as approximately 30% of households in the state have at least one person who fishes for recreation and almost 10% of households also fish for subsistence purposes (QMark, 2005). As popularity of Hawaii’s reef areas continues to increase, demand for access and use can disrupt coastal processes, damage ecological integrity of reef environments, reduce the quality of user experiences, and generate conflict among stakeholders regarding appropriate management responses (Orams, 1999). As a result, state regulatory agencies such as Hawaii’s Department of Land and Natural Resources (DLNR) are faced with a set of challenges that include determining use thresholds and how to 1 manage and monitor use levels to ensure that thresholds are not violated, protecting reef environments from degradation, and ensuring that user experiences are not compromised. -
Washington, Bowdoin, and Franklin
WASH ING T 0 N, BOWDQIN, AND FRANKLIN, AS PORTRAYED IS 0CCASI0NAL AD L) RESSES. WashnQ ton JVitz.o nal Jtioimm ent Proposed heLght in clotted lines, 48.5 fi Completed, shown by dnrk lznes, 174 fi Stone Terrace, 25f* hzgh dLarneter 2OOfS WAS HIN G T 0 N, BOWDOIN, AND FRANKLIN, AS PORTRAYED IN OCCASIONAL ADDRESSES: BY vxi ROBERT C. WINTHROP. I WITH A FEW BRIE-F PIECES ON KINDRED TOPICS, ASD WITH NOTES AKD ILLUSTRATIONS. LITTLE, BROWN, AND COMPANY. 1876. 7 /' Entered according to Act of Congress, in the pear 1876, by LITTLE, BROW6, AND CONIPANY, In the Office of the Librarian of Congress, at Vashington. Cambridge : Press oj 70hWilson and Soti. PREFATORY NOTE. I ‘&VE so often, of late, been called on for copies of some of these productions, -no longer to be found in a separate or convenient form,-that I have ventured to think that they might prove an acceptable contribution to our Centennial Literature. They deal with two, certainly, of the greatest figures of the period we are engaged in commemorating; and BOWDOIN,I am persuaded, will be’ considered no un worthy associate of WASHINGTONand FRANKLINin such a publication. The Monument to Washington, to which the first pro duction relates, is still unfinished. It may be interesting to recall the fact that the Oration, on the laying of its corner-stone, was to have been delivered by JOHNQUINCY ADAMS. He died a few months before the occasion, and it was as Speaker of the House of Representatives of the United States, of which he had long been the most illus trious member, that I was called on to supply his place. -
Side Scan Sonar and the Management of Underwater Cultural Heritage Timmy Gambin
259 CHAPTER 15 View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by OAR@UM Side Scan Sonar and the Management of Underwater Cultural Heritage Timmy Gambin Introduction Th is chapter deals with side scan sonar, not because I believe it is superior to other available technologies but rather because it is the tool that I have used in the context of a number of off shore surveys. It is therefore opportune to share an approach that I have developed and utilised in a number of projects around the Mediterranean. Th ese projects were conceptualised together with local partners that had a wealth of local experience in the countries of operation. Over time it became clear that before starting to plan a project it is always important to ask oneself the obvious question – but one that is oft en overlooked: “what is it that we are setting out to achieve”? All too oft en, researchers and scientists approach a potential research project with blinkers. Such an approach may prove to be a hindrance to cross-fertilisation of ideas as well as to inter-disciplinary cooperation. Th erefore, the aforementioned question should be followed up by a second query: “and who else can benefi t from this project?” Benefi ciaries may vary from individual researchers of the same fi eld such as archaeologists interested in other more clearly defi ned historic periods (World War II, Early Modern shipping etc) to other researchers who may be interested in specifi c studies (African amphora production for example). -
Barker Inlet and Port River Estuary System
community water quality program run by NRM Education NRM by run program quality water community • Urban Forest Biodiversity Program Biodiversity Forest Urban • The late Vitas Karnaitis - a volunteer monitoring the estuary as part of the the of part as estuary the monitoring volunteer a - Karnaitis Vitas late The • Project Dolphin Safe Dolphin Project • • Port Adelaide Kaurna community Kaurna Adelaide Port • • Primary Industries and Resources SA (PIRSA) SA Resources and Industries Primary • • City of Salisbury of City • • Environment Protection Authority (EPA) Authority Protection Environment • • Department of Environment and Natural Resources (DENR) Resources Natural and Environment of Department • assistance of the following organisations: following the of assistance Mallala This brochure was produced by NRM Education with the the with Education NRM by produced was brochure This • Cities of Playford, Port Adelaide Enfield, Salisbury and Salisbury Enfield, Adelaide Port Playford, of Cities • • Barker Inlet Port Estuaries Committee (BIPEC) Committee Estuaries Port Inlet Barker • Management Board Management • Adelaide and Mount Lofty Ranges Natural Resources Natural Ranges Lofty Mount and Adelaide • State and local government: local and State • University of South Australia South of University • • University of Adelaide of University • (SARDI) Institute Development and Research Australian South • • Flinders University of South Australia South of University Flinders • Research institutions: Research • Project Dolphin Safe and SA Seabird -
1Ba704, a NINETEENTH CENTURY SHIPWRECK SITE in the MOBILE RIVER BALDWIN and MOBILE COUNTIES, ALABAMA
ARCHAEOLOGICAL INVESTIGATIONS OF 1Ba704, A NINETEENTH CENTURY SHIPWRECK SITE IN THE MOBILE RIVER BALDWIN AND MOBILE COUNTIES, ALABAMA FINAL REPORT PREPARED FOR THE ALABAMA HISTORICAL COMMISSION, THE PEOPLE OF AFRICATOWN, NATIONAL GEOGRAPHIC SOCIETY AND THE SLAVE WRECKS PROJECT PREPARED BY SEARCH INC. MAY 2019 ARCHAEOLOGICAL INVESTIGATIONS OF 1Ba704, A NINETEENTH CENTURY SHIPWRECK SITE IN THE MOBILE RIVER BALDWIN AND MOBILE COUNTIES, ALABAMA FINAL REPORT PREPARED FOR THE ALABAMA HISTORICAL COMMISSION 468 SOUTH PERRY STREET PO BOX 300900 MONTGOMERY, ALABAMA 36130 PREPARED BY ______________________________ JAMES P. DELGADO, PHD, RPA SEARCH PRINCIPAL INVESTIGATOR WITH CONTRIBUTIONS BY DEBORAH E. MARX, MA, RPA KYLE LENT, MA, RPA JOSEPH GRINNAN, MA, RPA ALEXANDER J. DECARO, MA, RPA SEARCH INC. WWW.SEARCHINC.COM MAY 2019 SEARCH May 2019 Archaeological Investigations of 1Ba704, A Nineteenth-Century Shipwreck Site in the Mobile River Final Report EXECUTIVE SUMMARY Between December 12 and 15, 2018, and on January 28, 2019, a SEARCH Inc. (SEARCH) team of archaeologists composed of Joseph Grinnan, MA, Kyle Lent, MA, Deborah Marx, MA, Alexander DeCaro, MA, and Raymond Tubby, MA, and directed by James P. Delgado, PhD, examined and documented 1Ba704, a submerged cultural resource in a section of the Mobile River, in Baldwin County, Alabama. The team conducted current investigation at the request of and under the supervision of Alabama Historical Commission (AHC); Alabama State Archaeologist, Stacye Hathorn of AHC monitored the project. This work builds upon two earlier field projects. The first, in March 2018, assessed the Twelvemile Wreck Site (1Ba694), and the second, in July 2018, was a comprehensive remote-sensing survey and subsequent diver investigations of the east channel of a portion the Mobile River (Delgado et al. -
Low Impact Diving
A Finite Resource Dive To Preserve Over the course of almost two centuries, much • The goal of the LOW of Ontario’s marine heritage resource has been remarkably well preserved. The cold S.O.S. Dive To IMPACT dark waters of the Great Lakes and their Preserve program tributaries have provided archaeologists, sport is the preserva- divers and dive charter operators a unique tion of Marine DIVING opportunity - to discover our heritage. Heritage through Although the term may be overused, a participation and shipwreck is in fact a time capsule. It education represents what its builder believed to be the • The program offers a number of best technology available at the time of projects such as Adopt-A-Wreck, construction. This fact is very important when intended for divers of all skill and it comes to the study of earlier ships, as there are very few blue prints available. It is up to commitment levels us to preserve this time capsule for other to • Educational Material such as the enjoy and explore. Low Impact Diving course material will provide divers with an understanding of their maritime legacy, the impact that they can have, their role in preservation, and the laws protecting heritage sites in Ontario Robert Gaskin - May 2007 - BEFORE For More Information www.SaveOntarioShipwrecks.on.ca www.DiveToPreserve.org The increased popularity of sport diving has If you witness: anything being removed proportionally increased the pressure to which from a heritage site; anything else our fragile marine heritage is being subjected. Over time many shipwrecks have literally heritage related like an anchor or ship become worn out, most often inadvertently by part being moved or removed from the divers.