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Author: Richard A. Clinchy Publisher: Jones & Bartlett Learning ISBN: 9780801690310 Category : Health & Fitness Languages : en Pages : 308
Book Description
This bestselling, full-color manual includes thoroughly updated coverage of all aspects of sports diving, including equipment, safety, and diving tecnhiques. Current diving standards are reflected in its discussions on beach diving, computer equipment, CPR, diving accident management, and mixed-gas diving.
Author: Richard A. Clinchy Publisher: Jones & Bartlett Learning ISBN: 9780801690310 Category : Health & Fitness Languages : en Pages : 308
Book Description
This bestselling, full-color manual includes thoroughly updated coverage of all aspects of sports diving, including equipment, safety, and diving tecnhiques. Current diving standards are reflected in its discussions on beach diving, computer equipment, CPR, diving accident management, and mixed-gas diving.
Author: Glen H. Egstrom Publisher: Jones & Bartlett Learning ISBN: 9780801690358 Category : Health & Fitness Languages : en Pages : 304
Book Description
This full-color, extensively illustrated revision of a highly respected dive manual includes the information necessary to learn open water diving. Timely discussion include ecology and scuba techniques, equipment and safety materials, women's diving issues and concerns, expanded CPR information, air sharing and hand signals.
Author: B. Della Vedova Publisher: ISBN: Category : Continental margins Languages : en Pages : 664
Book Description
Heat flow estimates at two sites on the U.S. Atlantic continental margin are presented. An estimate of the heat flowing from the basement also has been obtained. About 4.8 km of sediments penetrated at the COST B-2 and 4.0 km at the COST B-3 were deposited since the Upper Jurassic. Well logs were used to evaluate thermal gradients and sedimentation rates, whereas thermal conductivities and radiogenic heat productions were measured on drill cuttings samples. A procedure to estimate in-situ thermal conductivity from drill cuttings and well logs is described. A substantial set of samples, in the form of drill cuttings, were sorted in four major lithologies: sandstones, siltstones, shales and limestones. Laboratory measurements of density, porosity, thermal conductivity, quartz (%), potassium (%), uranium (ppm) and thorium (ppm) were performed on 128 reorganized and pulverized samples. A significant correlation of the matrix thermal conductivity to quartz and potassium content was found. In situ porosity and volume fraction of each lithology, determined mainly from well logs, were used to calculate in situ mean thermal conductivity. Finally the mean in situ vertical component of the thermal conductivity, as required for heat flow values, has been estimated from a correction factor for the anisotropy of each lithology. The in-situ temperature and anisotropy effects substantially decrease estimates of thermal conductivity at depth. Below the uppermost 1 km in both wells the best estimate of the thermal gradient is 26.3°C km- 1 at COST B-2 and 26.1°C km- 1 at COST B-3, whereas in situ mean thermal conductivities range between about 1.8 and 1.9 W m- 1 K- 1 (4.3-4.5 T.C.U.). The average heat flow is estimated as about 45 mwm- 2 (1.07 H.F.U.) at COST B-2 and 44 mWm- 2 (1.06 H.F.U.) at COST B-3, with an uncertainty of about 20-25%. The mean radiogenic production in sediments at the two sites has been estimated as 1.83 (COST B-2) and 1.44 (COST B-3) 10- 6Wm- 3. With a 12-14 km thick sedimentary sequence a radioactive contribution of 20-25 mWm- 2 can be expected. The effects of sediment deposition, compaction, pore water advection and radiogenic heat production have been combined in a numerical model (Hutchison, 1985) to estimate the undisturbed basement heat flux. Although the sedimentation depresses the basement heat flux by 15-20%, this effect is more than compensated by radioactive heat production in the sediments, so that the surface flux is estimated to be higher than that from the basement. The latter is calculated at about 33-39 mwm- 2 (0.8-0.9 H.F.U.), a relatively low value. The overall uncertainity is about ± 20-25%, and other estimates on continental margins with thick sediments (e.g. Reiter and Jessop, 1985) probably have at least a similar uncertainty.
Author: Margaret A. Rioux Publisher: ISBN: Category : Deep diving Languages : en Pages : 76
Book Description
Diving, scientific diving, and diver safety are specialized subject areas not generally well-represented in even the largest of academic libraries, largely because of difficulties in locating appropriate items to include in the collection. However, in order to adequately fulfill his/her responsibilities, the Diving Safety Officer of a scientific diving program needs easy access to a broad range of books, reports, and journals covering all aspects of diving. This bibliography outlines a comprehensive collection appropriate to the needs of a scientific diving program in a research or academic institution. Items are grouped in broad subject areas corresponding to various aspects of the diving program. Both title and author indexes are also included.
Author: Richard A. Clinchy
Author: Richard A. Clinchy
Author: Glen H. Egstrom
Author: 
Author: Academy of Marine Sciences & Undersea Research
Author: 
Author: Alan Obin
Author: 
Author: B. Della Vedova
Author: Jeppesen
Author: Margaret A. Rioux