2 edition of High resolution profiler study of deep mixing in the Romanche fracture zone found in the catalog.
High resolution profiler study of deep mixing in the Romanche fracture zone
Ellyn T. Montgomery
Between November 20 and December 10, 1994, studies of the deep mixing processes in the Romanche Fracture Zone (RFZ) of the Mid-Atlantic Ridge were conducted from the French research vessel N/O le Noroit. Oceanographers from France and the U.S. worked together to acquire the unique data obtained on this expedition. The cruise departed from and returned to Dakar, Senegal. Prior to the work in the RFZ, a sediment trap was recovered and returned to port. Two HRP engineering test dives were completed on the way to the fracture zone. The next week and a half was spent profiling with the HRP and CTD along the channel of the RFZ to identify regions of especially intense mixing. After that, two trans-equatorial sections were done with the HRP to examine the structure and intensity of the equatorial jets. The presence of bottom intensified flow to the east along the RFZ and enhanced mixing of Antarctic Bottom Water were both observed. Based on the measurements obtained during this experiment, transport through the RFZ is estimated to be 1 Sv. The work at sea, instrumentation, data return and some preliminary results are presented in this report.
|Statement||by Ellyn T. Montgomery.|
|Series||WHOI -- 96-12., WHOI (Series) -- 96-12.|
|Contributions||Woods Hole Oceanographic Institution.|
|The Physical Object|
|Pagination||23 p. :|
|Number of Pages||23|
The philosophy of this book hinges on the overriding commonal-ity in fracture design that transcends the value of the reservoir per-meability. There is a strong theoretical foundation to this approach, which will be outlined in this book. Hence the title, Unified Fracture Design, which suggests the connection between theory and practice,File Size: 1MB. Bottom Water Fracture Zone Potential Temperature DOKLADY Earth Science Salinity Increase These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm by: 5.
Provides a comprehensive overview of this new area of research, including a review of Fracture Mechanics, basic through to advanced XFEM theory, as well as current problems and applications Includes a chapter on the future developments in the field, new research areas and possible future applications of the method. This study evaluated the fracture load of customized zirconia abutments with titanium insert according to preparation depths, with or without 5-year artificial aging. MATERIALS AND METHODS Thirty-six identical lithium disilicate crowns (IPS press) were fabricated to replace a maxillary right central incisor and cemented to the customized Cited by: 8.
An increase in sheet thickness is reflected in the size of the plastic zone and fracture mode. Thin plate usually fractures by shear, while the cleavage is typical for thick plates. The Engineers try to have high-strength, high ductility, high crack resistance, and faultless Fracture MechanicsFile Size: 2MB. Fractured Basement Reservoir Characterization for Fracture Distribution, Porosity and Permeability Prediction* Marie Lefranc. 1, Sherif Farag1, Laurent Souche1, and Agnes Dubois1. Search and Discovery Article # () Posted Decem
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The diapycnal mixing coefficient in the bottom water of the Romanche Fracture Zone is estimated by using the finestructure of CTD profiles, the microstructure of high-resolution profiler data, and. What does RFZ stand for.
RFZ stands for Romanche Fracture Zone. High resolution profiler study of deep mixing in the Romanche fracture zone. Ellyn T Montgomery, Woods Hole Oceanographic Institution. Official Full-Text Publication: Mixing in the Romanche Fracture Zone on ResearchGate, the professional network for scientists.
The diapycnal mixing coefficient in the bottom water of the Romanche Fracture Zone is estimated by using the finestructure of CTD profiles, the microstructure of high-resolution profiler data, and by constructing a heat budget from current meter data.
The finestructure of density profiles is described using the Thorpe scales LT. Several reports of submarine disturbances of possible volcanic origin near the equator were noted by Neumann van Padang et al.
() in the Catalog of Active Volcanoes of the World (CAVW). Ship captains have reported numerous submarine eruptions during the 18th and 19th centuries over a broad area in this part of the Atlantic, including accounts of observations of seaquakes, turbulent water.
Looking for Romanche Fracture Zone. Find out information about Romanche Fracture Zone. A 24,foot-deep trench in the Mid-Atlantic Ridge near the equator Explanation of Romanche Fracture Zone.
Temperature (in situ) profile is a composite of Crawford Stations and (Fuotcsa-~, ), Cka/n Station (MmrcALr, in press) and Albatross Stations and (BRu~u, JE~LOV and Kocza, ).
Romanche Fracture Zone The Romanche Trench is over fm deep at 18°W, the eastern boundary of the Vema-Chain survey by: This book covers important aspects of the study of such fracture structures.
The subject has numerous applications in a wide range of materials, and is particularly relevant in materials science and to inter-disciplinary subjects involving materials science, including physics, chemistry, engineering, biomimetics, earth sciences, biology and Cited by: The other part is a northwestern flow to the North American Basin.
Part of the northwesterly flow propagates through the Vema Fracture Zone (11 N) into the Northeastern Atlantic basins. Flows in the Romanche, Chain, and Vema fracture zones were studied recently by CTD and LADCP profiling.
An underwater cataract was found in the Chain Fracture Zone. An Introduction to Ocean Turbulence S. Thorpe and the energy sources that support and sustain ocean mixing. Little prior knowledge of physical oceanography is assumed.
The text is supported by numerous figures, extensive further reading lists, and more than 50 exercises that are graded in difficulty. You can write a book review and. The Romanche Fracture Zone was originally a corridor of Aptian-age dextral transtensional rifting along the Equatorial Atlantic margins.
Late Albian plate tectonic compression occurred due to a change in plate vectors, when the African and South American continents were still in contact across a km-long section of the Romanche Fracture Zone.
Fracture surface cleaning Since fracture surface cleaning invariably af-fects the fracture surface chemistry, localized el-emental analysis (if required) is recommended prior to cleaning. Therefore, energy dispersive spectroscopy (EDS) analysis on a scanning elec-tron microscope (SEM) should be conducted prior to fracture surface cleaning.
Publication History: This article is based on "Crain's Analyzing Fractured Reservoirs" by E. (Ross) Crain,first published inand updated annually until This webpage version is the copyrighted intellectual property of the author.
Do not copy or distribute in. *immediately available upon purchase as print book shipments may be delayed due to the COVID crisis. ebook access is temporary and does not include ownership of the ebook. Only valid for books with an ebook version.
Abstract The Romanche and Chain Fracture Zones (RFZ and CFZ) are known as pathways for the Lower North Atlantic Deep Water (LNADW) and the Antarctic Bottom Water (AABW) from the western trough to the eastern trough of the equatorial Atlantic Ocean across the Mid-Atlantic Ridge.
Fracture Mechanics covers classical and modern methods and introduce new/unique techniques, making this text an important resource for anyone involved in the study or application of fracture mechanics. Using insights from leading experts in fracture mechanics, it provides new approaches and new applications to advance the understanding of crack.
Fracture pressure is the pressure needed to create a fracture in a rock while drilling in open hole. Closure stress is the pressure needed to fracture a rock through perforations in cased hole. In some literature, closure stress and fracture pressure are used interchangeably or ambiguously.
Fracture mechanics is a failure theory that 1. determines material failure by energy criteria, possibly in conjunction with strength (or yield) criteria 2. considers failure to be propagating throughout the structure rather than simultaneous throughout the entire failure zone File Size: KB.
Fracture analysis in metallic materials Fernando Cordisco - Assembly. Four (4) parts form the whole device. Two of these semicircle parts form a circular plate. The sample to be test is hold between those circular plate using hard steel bolds of 1 cm diameter in 6 Size: 8MB.
_____, High-resolution of flow logging in observation boreholes during hydraulic testing of fractured-rock aquifers: Society of Professional Well Log Analysts Annual Logging Symposium, 32nd, Midland, Tex.,Transactions, p. L1-L New magnetometric, petrological, and geochemical data on basalts from the central Romanche Fracture Zone (FZ) allow us to classify these rocks into two groups.
The igneous rocks from the active part of the fracture zone that experienced transtension are referred to as alkaline by: 4. One square nautical degree within the active part of the Romanche Fracture Zone was surveyed at about long 17°W during the Equamarge II cruise of the R/V Jean Charcot to the equatorial Atlantic.
SeaBeam mapping and seismic-reflection profiles of the trench and adjacent northern and southern transverse ridges emphasize the contrast between the apparent simplicity of the major Cited by: Fracture Mechanics • It was shown that the theoretical cohesive stress is much greater than the observed fracture stress for metals • This lead to the idea of defects or cracks which locally raise the stress to the level of the theoretical cohesive stress.