453 resultados para nautical charting


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This layer is a georeferenced raster image of the historic paper map entitled: Chart of Boston Harbour : surveyed in 1817, by Alexr. S. Wadsworth ; by order of Come. William Bainbridge, to whom it is most respectfully inscribed ; Allen & Gaw, sc. Scale [1:18,000]. It was published by John Melish in 1819. Covers Boston Harbor, Massachusetts and adjacent lands. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This nautical chart shows coastal features such as rocks, channels, points, coves, islands, and more. Depths are shown by soundings and shading. It also shows land features such as roads, drainage, selected buidings, and more. Relief is shown by hachures. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: Chart of the harbours of Salem, Marblehead, Beverly, and Manchester : from a survey taken in the years 1804, 5 & 6, by Nathl. Bowditch, AM. AAS. ; assisted by Geo. Burchmore & Wm. Ropes, 3d. ; Hooker & Fairman, sc. Scale [ca. 1:20,500]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This nautical chart shows coastal features such as lighthouses, rocks, shoals, channels, points, coves, harbors, anchor points, islands, and more. Depths are shown by soundings and shading. Land features include settlements, selected buildings and roads, and more. Relief is shown pictorially. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: A chart of Nantucket shoals, surveyed by Paul Pinkham. Survey data was taken from "the light house on Nantucket Point in 1784." It was published and sold by John Norman, Feb. 10th, 1791. Scale [ca. 1:145,000]. Covers Nantucket Sound, Massachusetts and surrounding land. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This nautical chart shows coastal features such as lighthouses, rocks, shoals, currents, channels, points, coves, harbors, islands, and more. Depths are shown by soundings and shading. Land features include settlements, wind mills, and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: A new chart of Massachusetts Bay, and part of the coast of Maine, by Samuel Lambert, hydrographer, Salem, 1822 ; New edition published by Henry Whipple, 1853. Scale [ca. 1:200,000]. Covers the coast of New England from Buzzards Bay, Massachusetts to Monhegan Island, Maine. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This nautical chart shows coastal features such as rocks, channels, points, coves, harbors, islands, lighthouses, and more. Depths are shown by soundings and shading. It also shows land features such as settlements and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: A pilot's chart of Nantukket Shoals, by Captn. Thomas Jones, Jnr., of Falmouth in the county of Barnsable, Apr. 7, 1786. Scale [ca. 1:219,400]. Covers Nantucket Sound, Massachusetts and surrounding land. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This nautical chart shows coastal features such as lighthouses, rocks, shoals, currents, channels, points, coves, harbors, islands, and more. Depths are shown by soundings and shading. Land features include settlements, wind mills, and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: This chart of Cape Cod and Harbour is dedicated to the Boston Marine Society by their friend & brother, John Foster Williams. It was published in 1799. Scale [ca. 1:6,450]. Covers Cape Cod from Truro to Provincetown including Provincetown Harbor, Massachusetts. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map is a nautical chart showing coastal features such as anchor points, currents, points, inlets, coves, and more. Shows also land features: windmills, lighthouse, and buildings pictorially. Harbor depths are shown by soundings. Includes text "Directions for sailing by Cape-Cod Light-House and into Cape-Harbour." This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: Chart of Cape Cod Harbor and the adjacent coast of Provincetown and Truro, reduced from the original of James D. Graham and published under the patronage of the Boston Marine Insurance Companies by I.W.P. Lewis ; surveyed and projected by J.D. Graham ; W.J. Stone, sc.. It was published in 1841. Scale 1:21,120. Covers Cape Cod from Truro to Provincetown including Provincetown Harbor, Massachusetts. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map is a nautical chart showing coastal features such as harbors, light houses, ocean bottom types, points, inlets, coves, wharves, high and low tide marks, and more. Depths are shown by soundings and contours. Shows also land features: buildings with names of landowners, roads, drainage, and more. Relief is shown by hachures. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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This layer is a georeferenced raster image of the historic paper map entitled: Isles du Cap Verd Hispanis Islas de Cabo Verde Belgis de Soute Eylanden. It was published by chez Jean Cóvens et Corneille Mortier, geographes, ca. 1730. Scale [ca. 1:910,000]. Covers Cape Verde. Map in Dutch and SpanishThe image inside the map neatline is georeferenced to the surface of the earth and fit to the World Mercator projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, villages and other human settlements, shoreline features, ports and anchorage points, and more. Relief shown pictorially. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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This layer is a georeferenced raster image of the historic paper map entitled: A new chart of the Cape Verde islands : drawn from the latest authorities by J.W. Norie, hydrographer. It was published by J.W. Norie and Co. in 1824. Scale [ca. 1:810,000]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Mercator projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, villages and other human settlements, shoreline features, ports and anchorage points, and more. Relief shown by hachures; depths shown by soundings. Includes also profile of the south coast of the Island of St. Iago and a profile of the Island of Mayo and insets: Port Praya in the Island of St. Iago; Porto Grande in the Island of St. Vincent; English Road in the Island of Bonavista.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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This layer is a georeferenced raster image of the historic paper map entitled: To capt. W.F.W. Owen R.N. this chart of the Maldiva Islands, exhibiting the safe channels between the southern attollons, having been constructed from valuable materials furnished chiefly by him, is inscribed by ... James Horsburgh ; engraved by John Bateman. It was published by James Horsburgh in 26th March, 1814. Scale [ca. 1:1,800,000]. Covers Maldives. The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Miller Cylindrical projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, shoreline features, atolls, channels, routes of historic passages, and more. Includes text.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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The international system is changing fast and both the European Union and Brazil will need to adapt. This paper argues that such a process of adjustment may bring the two closer together, even if their starting points differ considerably. Europe looks at the ongoing redistribution of power as a challenge, Brazil as an opportunity. Europe is coping with the detrimental impact of the economic crisis on its international profile; Brazil is enhancing its influence in its region and beyond. Their normative outlook is broadly compatible; their political priorities and behaviour in multilateral frameworks often differ, from trade to development and security issues. Despite the crisis, however, there are signals of renewed engagement by the EU on the international stage, with a focus on its troubled neighbourhood and partnerships with the US and large emerging actors such as Brazil. The latter is charting an original course in international affairs as a rising democratic power from the traditional South with no geopolitical opponents and a commitment to multilateralism. In testing the limits of its international influence, Brazil will need dependable partners and variable coalitions that go well beyond the BRICS format, which is not necessarily sustainable. This contribution suggests that the strategic partnership between the EU and Brazil may grow stronger not only as a platform to deepen economic ties and sustain growth, but also as a tool to foster cooperation in political and security affairs including crisis management, preventive diplomacy and human rights.

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Acoustic estimates of herring and blue whiting abundance were obtained during the surveys using the Simrad ER60 scientific echosounder. The allocation of NASC-values to herring, blue whiting and other acoustic targets were based on the composition of the trawl catches and the appearance of echo recordings. To estimate the abundance, the allocated NASC -values were averaged for ICES-squares (0.5° latitude by 1° longitude). For each statistical square, the unit area density of fish (rA) in number per square nautical mile (N*nm-2) was calculated using standard equations (Foote et al., 1987; Toresen et al., 1998). To estimate the total abundance of fish, the unit area abundance for each statistical square was multiplied by the number of square nautical miles in each statistical square and then summed for all the statistical squares within defined subareas and over the total area. Biomass estimation was calculated by multiplying abundance in numbers by the average weight of the fish in each statistical square then summing all squares within defined subareas and over the total area. The Norwegian BEAM soft-ware (Totland and Godø 2001) was used to make estimates of total biomass.

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A closed eddy core in the Subantarctic Atlantic Ocean was fertilized twice with two tons of iron (as FeSO4), and the 300 km**2 fertilized patch was studied for 39 days to test whether fertilization enhances downward particle flux into the deep ocean. Chlorophyll a and primary productivity doubled after fertilization, and photosynthetic quantum yield (FV/FM) increased from 0.33 to >0.40. Silicic acid (<2 µmol/L) limited diatoms, which contributed <10% of phytoplankton biomass. Copepods exerted high grazing pressure. This is the first study of particle flux out of an artificially fertilized bloom with very low diatom biomass. Net community production (NCP) inside the patch, estimated from O2:Ar ratios, averaged 21 mmol POC/m**2/d, probably ±20%. 234Th profiles implied constant export of ~6.3 mmol POC/m**2/d in the patch, similar to unfertilized waters. The difference between NCP and 234Th-derived export partly accumulated in the mixed layer and was partly remineralized between the mixed layer and 100 m. Neutrally buoyant sediment traps at 200 and 450 m inside and outside the patch caught mostly <1.1 mmol POC/m**2/d, predominantly of fecal origin; flux did not increase upon fertilization. Our data thus indicate intense flux attenuation between 100 and 200 m, and probably between the mixed layer and 100 m. We attribute the lack of fertilization-induced export to silicon limitation of diatoms and reprocessing of sinking particles by detritus feeders. Our data are consistent with the view that nitrate-rich but silicate-deficient waters are not poised for enhanced particle export upon iron addition.

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The continuous plankton recorder (CPR) survey is an upper layer plankton monitoring program that has regularly collected samples, at monthly intervals, in the North Atlantic and adjacent seas since 1946. Water from approximately 6 m depth enters the CPR through a small aperture at the front of the sampler and travels down a tunnel where it passes through a silk filtering mesh of 270 µm before exiting at the back of the CPR. The plankton filtered on the silk is analyzed in sections corresponding to 10 nautical miles (approx. 3 m**3 of seawater filtered) and the plankton microscopically identified (Richardson et al., 2006 and reference therein). In the present study we used the CPR data to investigate the current basin scale distribution of C. finmarchicus (C5-C6), C. helgolandicus (C5-C6), C. hyperboreus (C5-C6), Pseudocalanus spp. (C6), Oithona spp. (C1-C6), total Euphausiida, total Thecosomata and the presence/absence of Cnidaria and the Phytoplankton Colour Index (PCI). The PCI, which is a visual assessment of the greenness of the silk, is used as an indicator of the distribution of total phytoplankton biomass across the Atlantic basin (Batten et al., 2003). Monthly data collected between 2000 and 2009 were gridded using the inverse-distance interpolation method, in which the interpolated values were the nodes of a 2 degree by 2 degree grid. The resulting twelve monthly matrices were then averaged within the year and in the case of the zooplankton the data were log-transformed (i.e. log10 (x+1).

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Acoustic and pelagic trawl data were collected during various pelagic surveys carried out by IFREMER in May between 2000 and 2012 (except 2001), on the eastern continental shelf of the Bay of Biscay (Pelgas series). The acoustic data were collected with a Simrad EK60 echosounder operating at 38 kHz (beam angle at -3 dB: 7°, pulse length set to 1.024 ms). The echosounder transducer was mounted on the vessel keel, at 6 m below the sea surface. The sampling design were parallel transects spaced 12 nm apart which were orientated perpendicular to the coast line from 20 m to about 200 m bottom depth. The nominal sailing speed was 10 knots and 3 knots on average during fishing operations. The scrutinising (species identification) of acoustic data was done by first characterising acoustic schools by type and then linking these types with the species composition of specific trawl hauls. The data set contains nautical area backscattering values, biomass and abundance estimates for blue whiting for one nautical mile long transect lines. Further information on the survey design, scrutinising and biomass estimation can be found in Doray et al. 2012.