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Download or read book Numerical Simulation of Currents in Monterey Bay written by and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland Albert Garcia
Publisher :
ISBN 13 :
Total Pages : 151 pages
Book Rating : 4.:/5 (255 download)
Download or read book Numerical Simulation of Currents in Monterey Bay written by Roland Albert Garcia and published by . This book was released on 1971 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent interest in pollution control and the proximity of Monterey Bay to the Naval Postgraduate School prompted an investigation of the circulation in the bay. The first phase of the study consists of solving the simple cavity flow problem. A vorticity-stream function relationship is solved using an explicit, time dependent, finite difference scheme. Solutions for selected Reynolds' numbers and length to width ratios of the cavity are obtained. Values are chosen to give an indication of the flow patterns occurring over a wide range of these parameters. Equations for a refined model are derived to include the effects of the bottom topography, frictional forces and the Coriolis force. A numerical procedure similar to the one applied to the simple cavity flow problem is used on the refined equations. The topography of Monterey Bay is used in this study. (Author).
Author : Y. H. Tseng
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (742 download)
Download or read book Numerical Simulation of Regional Circulation in the Monterey Bay Region written by Y. H. Tseng and published by . This book was released on 2003 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monterey Bay is located 100 km south of San Francisco and is one of several large bays on the West Coast of the United States. This area is important due to the abundance of marine life. The regional circulation in the Monterey Bay area is tightly coupled to the California Current System (CCS) and highly correlated to the coastal upwelling. In the offshore region, flow is dominated by a broad, weak, equatorward flowing current, the California Current (CC). The CC extends offshore to a distance of 900 - 1000 km and flows year-round. Within about 100 km of the coast, two narrow poleward flowing boundary currents have been found, the Inshore Countercurrent (IC) and the California Undercurrent (CU). The IC is a weak current that varies seasonally, appearing in fall and winter, and transports shallow, upper layer water. The CU is a narrow (10-50 km) relatively weak subsurface flow and transports warm, saline equatorial water. The CU is strongest at around 100 - 300 m depth and has a mean speed of approximately 15 cm/s (Pierce et al. 2000) at all latitudes on the West Coast throughout the year.
Author : Kim A. Koehler
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (318 download)
Download or read book Observations and Modeling of Currents Within the Monterey Bay During May 1988 written by Kim A. Koehler and published by . This book was released on 1990 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: April and May of 1988 along the central California coast were characterized as a period of strong coastal upwelling produced by moderate to strong northwesterly winds present throughout the period. A product of this upwelling event was the manifestation of southward geostrophic currents which extended to a distance of approximately 50 km from the coast. From 08 to 11 May 1988, hydrographic surveying was conducted within the Monterey Bay. Internal waves, with amplitudes of up to 30 m were present throughout the period and effectively masked the mean signal, implying that averaging is essential to avoid aliasing. The current -- temperature -- depth (CTD) data were averaged to estimate the mean field during this time frame. Acoustic Doppler Current Profiler (ADCP) data, were also averaged. The mean flow field and dynamic topography implied anticyclonic surface flow with cyclonic flow at 200 m depth. ADCP derived mean flows compared favorably with geostrophic mean flow rate in all areas except one, the deep outflow region along the northern wall of the Canyon. Application of ocean models of boundary layer flow of the geostrophic mean field yielded flows similar to those described above. Wind stress experiments indicated that strong wind field may influence surface circulation in the Bay. Interactions between the coastal upwelling geostrophic jet and the Monterey Submarine Canyon is believed to have been a major mechanism responsible for the mean flow.
Author : Barry L. Bruner
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (318 download)
Download or read book A Numerical Study of Baroclinic Circulation in Monterey Bay written by Barry L. Bruner and published by . This book was released on 1988 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The circulation of Monterey Bay is both variable and complex, and is likely to be significantly influenced by circulation in the adjacent California current. To study this circulation a two-layer, numerical model was used. The model was forced by inflow and outflow at an open boundary that connected the Pacific Ocean with the bay. Topography representing Monterey Canyon was included in the lower layer of the model. The effects of wind and tidal forcing were not considered. Results indicate that surface circulation is strongly constrained by topography when the lower layer flow is 5 cm/sec or larger and that the flows within the bay are consistent with geostrophic, vorticity-conserving flow over bottom topography. The sensitivity of the model to the distribution and strength of inflow and outflow forcing location was investigated. The model was found to be sensitive to the location of inflow and outflow forcing and also to the inflow and outflow vertical structure. Keywords: Ocean currents; Mathematical models; Submarine canyons; Bay bottom topography; Two layer ocean model.
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721632466
Total Pages : 26 pages
Book Rating : 4.6/5 (324 download)
Download or read book Numerical Simulation of Regional Circulation in the Monterey Bay Region written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study is to produce a high-resolution numerical model of Mon- terey Bay area in which the dynamics are determined by the complex geometry of the coastline, steep bathymetry, and the in uence of the water masses that constitute the CCS. Our goal is to simulate the regional-scale ocean response with realistic dynamics (annual cycle), forcing, and domain. In particular, we focus on non-hydrostatic e ects (by comparing the results of hydrostatic and non-hydrostatic models) and the role of complex geometry, i.e. the bay and submarine canyon, on the nearshore circulation. To the best of our knowledge, the current study is the rst to simulate the regional circulation in the vicinity of Monterey Bay using a non-hydrostatic model. Section 2 introduces the high resolution Monterey Bay area regional model (MBARM). Section 3 provides the results and veri cation with mooring and satellite data. Section 4 compares the results of hydrostatic and non-hydrostatic models. Tseng, Y. H. and Dietrich, D. E. and Ferziger, J. H. Ames Research Center
Author : Sheldon Mark Lazanoff
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.3/5 (121 download)
Download or read book An Evaluation of a Numerical Water Elevation and Tidal Current Prediction Model Applied to Montery Bay written by Sheldon Mark Lazanoff and published by . This book was released on 1971 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Douglas M. Pirie
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.:/5 (318 download)
Download or read book California Coastal Processes Study - Landsat II written by Douglas M. Pirie and published by . This book was released on 1977 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sheldon Mark Lazanoff
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Evaluation of a Numerical Water Elevation and Tidal Current Prediction Model Applied to Monterey Bay written by Sheldon Mark Lazanoff and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hansen Hydrodynamical - Numerical model was evaluated for Monterey Bay with actual field data. Tides and winds are the principal driving forces of the Hansen model. Analysis of the field data indicated that the principal driving force of the circulation in the bay was the oceanic currents and not the tides and winds. The tidal heights and phases and current directions were calculated correctly by the model, but the calculated current speeds were an order of magnitude too large. The inaccuracy of the current speeds was attributed to the inaccurate calculations of the currents along the open boundary and the large bathymetric gradients of the Monterey Submarine Canyon. (Author).
Author : Steven Michael Jachec
Publisher :
ISBN 13 : 9780549060482
Total Pages : 276 pages
Book Rating : 4.0/5 (64 download)
Download or read book Understanding the Evolution and Energetics of Internal Tides Within Monterey Bay Via Numerical Simulations written by Steven Michael Jachec and published by . This book was released on 2007 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, it has been viewed that tides dissipate 2.6 TW over the continental shelves via the shallow bottom boundary layer, and have little impact on deep ocean mixing (Munk & Wunsch, 1998). Through their tidal maps, Egbert & Ray (2001) have confirmed that while most energy is lost in the shallow sea, nearly 1 TW is lost in the deep ocean (Garrett, 2003). Internal tides may provide the mechanism to bring power to mix the deep ocean (Garrett, 2003). However, the exact amounts dissipated in the shallow coastal regional and deep ocean remain in question.
Author : Sheldon Mark Lazanoff
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Evaluation of a Numerical Water Elevation and Tidal Current Prediction Model Applied to Monterey Bay written by Sheldon Mark Lazanoff and published by . This book was released on 1971 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hansen Hydrodynamical - Numerical model was evaluated for Monterey Bay with actual field data. Tides and winds are the principal driving forces of the Hansen model. Analysis of the field data indicated that the principal driving force of the circulation in the bay was the oceanic currents and not the tides and winds. The tidal heights and phases and current directions were calculated correctly by the model, but the calculated current speeds were an order of magnitude too large. The inaccuracy of the current speeds was attributed to the inaccurate calculations of the currents along the open boundary and the large bathymetric gradients of the Monterey Submarine Canyon. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 524 pages
Book Rating : 4.:/5 (318 download)
Download or read book Northern California Coastal Processes Annotated Bibliography written by and published by . This book was released on 1987 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Connelly D. Stevenson
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (318 download)
Download or read book A Study of Currents in Southern Monterey Bay written by Connelly D. Stevenson and published by . This book was released on 1964 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of surface and subsurface water circulation in shallow water in the extreme southern end of Monterey Bay were made by tracking drogues from the beach. A computer program included in the appendix was developed to transform the raw survey data into drogue courses and speeds, and to plot their trajectories. Analysis of the drogue tracks showed a predominance of shoreward flow. Interpretation of the effect of wind and sea conditions upon the observed water transport revealed a close dependence upon winds above five knots, in contrast to an apparent lack of dependence upon tidal variations and waves. Water motions in general responded to changes in the character of the wind with very little time lag, the lag increasing slightly with depty. Water flow commonly diminished and was deflected an increasing amount to the right of the wind with depth, presumably in response to Coriolis effect. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : Michael D. Foster
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (318 download)
Download or read book Evolution of Diurnal Surface Winds and Surface Currents for Monterey Bay written by Michael D. Foster and published by . This book was released on 1993 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The diurnal-period fluctuations of winds and surface currents are analyzed for September 1992 in and around Monterey Bay. Wind records are compared for three coastal stations and two mooring sites. Remotely-sensed surface current observations from two CODAR (HF radar) sites are used to explore the ocean's response to diurnal-period forcing. An average diurnal cycle is formed at each wind station and at all CODAR bins. The earliest sea breeze response is seen at the coastal wind stations where morning winds accelerate toward the coastal mountain ranges. A few hours later, the coastal winds accelerate to the southeast down the Salinas Valley. Offshore afternoon winds rotate from their normal alongshore orientation to also become aligned with the valley. The CODAR-derived surface currents respond in less than the two-hour sampling rate to the onset of the diurnal onshore winds. Currents accelerate in the direction of the Salinas Valley. As the day progresses, the more offshore currents rotate clockwise out from under the winds in a possible Ekman or inertial adjustment that continues throughout the night and spreads onshore. In the afternoon, a complicated eddy pattern develops near shore in a possible response to the coastal boundary.
Author :
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.3/5 (243 download)
Download or read book First Comprehensive Symposium on the Practical Application of Earth Resources Survey Data: Special session presentations: Plenary written by and published by . This book was released on 1975 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Naval Postgraduate School (U.S.)
Publisher :
ISBN 13 :
Total Pages : 658 pages
Book Rating : 4.:/5 (1 download)
Download or read book Compilation of Abstracts of Dissertations, Theses and Research Papers Submitted by Candidates for Degrees written by Naval Postgraduate School (U.S.) and published by . This book was released on 1969 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
