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article 76: the ridge issue
article 76: the ridge issue

... interest to this paper is that which has been rendered subaerial by reason of anomalous, local, thermal activity in the interior of the earth near to, or beneath a mid-ocean spreading ridge system. Excess thermal activity in the earths interior ...
1 Lecture 14 - Marine Sediments – Formation and Distribution
1 Lecture 14 - Marine Sediments – Formation and Distribution

... minerals are the dominant components of red clays. This does not mean that the input of this material is larger there but rather that there is nothing else to dilute it with. Terrigenous sediments enclose information about river fluxes, sources of the weathered material (provenance), weathering proc ...
Earth Science 2.1 The World Ocean Presearch WO 3: Planet Ocean
Earth Science 2.1 The World Ocean Presearch WO 3: Planet Ocean

... Chinese mariners reached the east coast of Africa in the fifteenth century, well before Portuguese colonists. By 1700, maps of the Atlantic Ocean were almost as accurate as today’s. But although dragons may have been banished from the world’s end, it was largely the promise of distant lands (and res ...
Introduction to Marine Science
Introduction to Marine Science

...  1500’s Vasco Nunez de Balboa crossed the Isthmus of the Panama and discovered the Pacific Ocean on the other side and was the first European to sail into the Pacific  1519 Ferdinand Magellan led exploration to sail around the world (he died but the 18 men from his crew that survived finished the ...
Ocean Drilling Program Scientific Results Volume 124
Ocean Drilling Program Scientific Results Volume 124

... Crustal Structure and Heat Flow Six marine seismic refraction experiments have been conducted in the Celebes Sea (Murauchi et al., 1973; Ludwig et al., 1979), and are compiled by Hayes et al. (1978). Three experiments were two-ship reversed refraction profiles that detected acoustic signals to depth ...
RTF RTF
RTF RTF

... development of the world’s oceans. The foundation’s mission is to identify ocean stakeholders and their projects and to spread knowledge about ocean use and protection, in order to increase ocean awareness. One of the specific aims of the foundation is to incorporate ocean issues in all areas of edu ...
OL OOP Section 01 - CCMI - Central Caribbean Marine Institute
OL OOP Section 01 - CCMI - Central Caribbean Marine Institute

... Thus, the Coral Sea is considered part of the Pacific Ocean while the Caribbean Sea is considered part of the Atlantic Ocean. The term "sea" is often given to a saltwater area on the margins of an ocean (e.g. the Mediterranean Sea is beside the Atlantic). A sea is also often enclosed or partially en ...
Tidal Streams along Brittany Northern Coast, France
Tidal Streams along Brittany Northern Coast, France

... The adjustments of the Northern Brittany model again confirm the importance of the boundary conditions and bathymetry in numerical modelling. The channel of Batz island and the Roscoff harbour could not have been covered without the availability of the SHOM bathymetry data base, in particular the Mo ...
Buoyancy frequency profiles and internal semidiurnal tide turning
Buoyancy frequency profiles and internal semidiurnal tide turning

... component o f the W orld Climate Research Programme between 1990 and 1998; in addition, data from as early as 1985 have been incorporated into the database. The goal was to obtain a snapshot o f the state o f the ocean within a single decade. In situ measurements included CTD (conductivity, temperat ...
The Submarine Volcano Eruption off El Hierro Island: Effects on the
The Submarine Volcano Eruption off El Hierro Island: Effects on the

... El Hierro Island with the intention of monitoring the eruptive process. Five oceanographic surveys with hydrographic and biological samplings were performed until late February 2012 to study the effects of the volcano emissions on the pelagic biota. Epipelagic mesozooplankton and vertical migrant mi ...
oceans, seafloor, and continental margins
oceans, seafloor, and continental margins

... EARTH’S SEAFLOOR On June 27,1667, Captain John Wood, on the H. M. Speedwell, recorded that he saw the bottom while  sounding at a depth of 80 fathoms (480 feet). His position was approximately 74°30'N, 63°E (to the east of  Novaya Zemlya). He records that he "could see the shells at the bottom very ...
New Technological Developments for Oceanographic
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... The main feature of Italian RMN is the measure of sea level. Each buoy is equipped with a sea level microwave sensor coupled with another one level sensor with back-up function. In addiction there is the traditional ultrasound hydrometric sensor working since 1998. Each buoy also carries a meteorolo ...
pdf - Wiley Online Library
pdf - Wiley Online Library

... (M2) tidal frequency, wM2. Profiles of N2(z) (the quantity in the equations of motion) are computed using conductivity, temperature, and depth data obtained in the World Ocean Circulation Experiment (WOCE). Values for N2(z) computed using Gibbs SeaWater routines in two thermodynamically equivalent e ...
103-14-DeepSeaSed2Types-2004(Lessons14&15)
103-14-DeepSeaSed2Types-2004(Lessons14&15)

... • Calcareous oozes occur at shallower depths (<3 500 to 4 000 m) • Siliceous oozes occur at deeper depths (> 3 500 to 4 000 m) ...
The Canary Islands origin: a unifying model - E
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... Following the success of the hotspot model in explaining the Hawaiiau volcanism (Wilson, 1963), the Cauary Islands were proposed (Morgau, 1971; Burke and Wilson, 1972; Schrnincke, 1973; Vogt, 1974a,b; Khau, 1974; Morgan, 1983) to represent the surface expression of a column of fertile material which ...
The RADMED monitoring programme as a tool for
The RADMED monitoring programme as a tool for

... (GES) by 2020 at the latest. It is the first legislative comprehensive instrument in relation to the marine biodiversity policy in the European Union (EU), as it contains the explicit regulatory objective that “biodiversity is maintained by 2020” as the cornerstone for achieving GES. The decisions a ...
Sediments - cloudfront.net
Sediments - cloudfront.net

... Covered by sediments, gravel, silt and mud Sediment particles from land, from biological activity, and even from space Sediments can help us define what occurred in recent history in the ocean basin Sediment thickest at continental margins ...
An inverse model for calculation of global volume Fan, Chenwu
An inverse model for calculation of global volume Fan, Chenwu

... 135 Sv (1 Sv = 106 m3s− 1) for Australia, and 130 Sv for America. In calculating the geostrophic transport in the South Atlantic Ocean, Reid (1989) set up Ψ-value to be 0 for Antarctic, 132 Sv for Africa, and 130 Sv for America. Such a treatment subjectively prescribes 130 Sv through the Drake Passa ...
Earth`s Oceans
Earth`s Oceans

... • The ocean absorbs and releases thermal energy much more slowly than dry land does. If it were not for this function of the ocean, the average air temperature on Earth would vary from above 1000 C during the day to below –1000 C at night. This rapid exchange of energy between the atmosphere and the ...
oceanic - Southern Local Schools
oceanic - Southern Local Schools

... • The ocean absorbs and releases thermal energy much more slowly than dry land does. If it were not for this function of the ocean, the average air temperature on Earth would vary from above 1000 C during the day to below –1000 C at night. This rapid exchange of energy between the atmosphere and the ...
Cape Verde hotspot from the upper crust to the top of the lower mantle
Cape Verde hotspot from the upper crust to the top of the lower mantle

... In S receiver functions (SRFs) the Sp converted phases do not interfere with multiple reflections. In the SRF technique (Farra and Vinnik, 2000) the record of the S wave train is decomposed into Q and L components. For the sketch of the coordinate system see Vinnik et al. (2010). The Q axis is parall ...
Unit 4 The importance of oceans
Unit 4 The importance of oceans

... Hudson Bay ...
OCEANOGRAPHY AND MARINE ZOOLOGY OF THE NEW
OCEANOGRAPHY AND MARINE ZOOLOGY OF THE NEW

... of Australia and New Zealand, and Circumpolar Subantarctic Water further south. An interesting feature of subantarctic hydrology is the intrusion from the Tasman Sea west of New Zealand of water warmer and more saline than the Subantarctic Water to the east and south. This intruding water is cut off ...
A brief history of oceanographic studies in the Indian Ocean 47
A brief history of oceanographic studies in the Indian Ocean 47

... from standard depths for estimating dissolved oxygen and nutrients at each station. The panel on geology requested that all ships carry precision echosounders and continuously run them to record the water depth and to share such information with all other participating ships. Geomagnetic and gravime ...
Minutes - WWF South Africa
Minutes - WWF South Africa

... temporal variability of the major processes within the study area is required. These processes operate at a variety of scales, which should be recognized in MPA design. Like other small oceanic islands, nutrient input to the Prince Edward Islands is primarily from the surrounding ocean (Smith 1978, ...
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Challenger expedition



The Challenger expedition of 1872–76 was a scientific exercise that made many discoveries to lay the foundation of oceanography. The expedition was named after the mother vessel, HMS Challenger.Prompted by Charles Wyville Thomson—of the University of Edinburgh and Merchiston Castle School—the Royal Society of London obtained the use of Challenger from the Royal Navy and in 1872 modified the ship for scientific work, equipping her with separate laboratories for natural history and chemistry. The expedition, led by Captain George Nares, sailed from Portsmouth, England, on 21 December 1872. Other naval officers included Commander John Maclear. Under the scientific supervision of Thomson himself, she travelled nearly 70,000 nautical miles (130,000 km) surveying and exploring. The result was the Report Of The Scientific Results of the Exploring Voyage of H.M.S. Challenger during the years 1873-76 which, among many other discoveries, catalogued over 4,000 previously unknown species. John Murray, who supervised the publication, described the report as ""the greatest advance in the knowledge of our planet since the celebrated discoveries of the fifteenth and sixteenth centuries"". Challenger sailed close to Antarctica, but not within sight of it.
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