551 resultados para E-compass
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Presented are physical and biological data for the region extending from the Barents Sea to the Kara Sea during 158 scientific cruises for the period 1913-1999. Maps with the temporal distribution of physical and biological variables of the Barents and Kara Seas are presented, with proposed quality control criteria for phytoplankton and zooplankton data. Changes in the plankton community structure between the 1930s, 1950s, and 1990s are discussed. Multiple tables of Arctic Seas phytoplankton and zooplankton species are presented, containing ecological and geographic characteristics for each species, and images of live cells for the dominant phytoplankton species.
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Transects of a Remotely Operated Vehicle (ROV) providing sea-bed videos and photographs were carried out during POLARSTERN expedition ANT-XV/3 focussing on the ecology of benthic assemblages on the Antarctic shelf in the South-Eastern Weddell Sea. The ROV-system sprint 103 was equiped with two video- and one still camera, lights, flash-lights, compass, and parallel lasers providing a scale in the images, a tether-management system (TMS), a winch, and the board units. All cameras used the same main lense and could be tilted. Videos were recorded in Betacam-format and (film-)slides were made by decision of the scientific pilot. The latter were mainly made under the aspect to improve the identification of organisms depicted in the videos because the still photographs have a much higher optical resolution than the videos. In the photographs species larger than 3 mm, in the videos larger than 1 cm are recognisable and countable. Under optimum conditions the transects were strait; the speed and direction of the ROV were determined by the drift of the ship in the coastal current, since both, the ship and the ROV were used as a drifting system; the option to operate the vehicle actively was only used to avoide obstacles and to reach at best a distance of only approximately 30 cm to the sea-floor. As a consequence the width of the photographs in the foreground is approximately 50 cm. Deviations from this strategy resulted mainly from difficult ice- and weather conditions but also from high current velocity and local up-welling close to the sea-bed. The sea-bed images provide insights into the general composition of key species, higher systematic groups and ecological guilds. Within interdisciplinary approaches distributions of assemblages can be attributed to environmental conditions such as bathymetry, sediment characteristics, water masses and current regimes. The images also contain valuable information on how benthic species are associated to each other. Along the transects, small- to intermediate-scaled disturbances, e.g. by grounding icebergs were analysed and further impact to the entire benthic system by local succession of recolonisation was studied. This information can be used for models predicting the impact of climate change to benthic life in the Southern Ocean. All these approaches contribute to a better understanding of the fiunctioning of the benthic system and related components of the entire Antarctic marine ecosystem. Despite their scientific value the imaging methods meet concerns about the protection of sensitive Antarctic benthic systems since they are non-invasive and they also provide valuable material for education and outreach purposes.
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I. The life of John Flavel. The fountain of life.--II. The method of in the gospel-redemption. Pneumatologia; a treatise of the soul of man.--III. Pneumatologia (cont.) A practical treatise of fear. The righteous man's refuge. A blow at the root; or, The causes and cure of mental errors. Vindiciarum vindex. The second appendix; of Antinomianism. A sermon on gospel-unity.--England's duty. Mount Pisgah. Divine conduct; or, The mystery of Providence. Wonderful sea-deliverances. Antipharmacum saluberrimum. Tidings from Rome; or, England's alarm.-- V. Husbandry spiritualized; or, The heavenly use of earthly things. Navigation spiritualized; or, A new compass for seamen. [Miscellaneous tracts and sermons]--VI. Preparations for sufferings. The balm of the covenant. An exposition of the Assembly's Shorter catechism. A reply to Mr. Philip Cary's Solemn call. Sacramental meditations. [Miscellaneous tracts and sermons].
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Includes supplements.
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Smith II: 949; Shaw & Shoemaker (1823): 14959.
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Includes indexes.
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Includes bibliographical references.
The history of Bucks County, Pennsylvania : from the discovery of the Delaware to the present time /
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Appendix : Flora, by I.S. Moyer--Birds, by Joseph Thomas-Mammals, by Joseph Thomas--Compass. Variations of the compass needle.
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Includes index.
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"30 June 1986."
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"22 April 1987."
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"December 1959."