Search results

Title: Post Miocene history of Antarctic bottom water paleospeed and polar front zone migrations in the Argentine Basin
Description: by Kenneth R. Bork., "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1988.,
Date: 1988-01-01T00:00:00Z
Institution: San Jose State University

Title: The pleistocene history of San Francisco Bay along the Southern Crossing
Description: by Bruce E. Ross., "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1977.,
Date: 1977-01-01T00:00:00Z
Institution: San Jose State University

Title: The origin, evolution, and contemporary morphology of Soquel Submarine Canyon, Monterey Bay, California
Description: by Deidre Ellen Sullivan., "A thesis presented to the faculty of Moss Landing Marine Laboratories., Thesis (M.S.) -- San Jose State University, 1994., ,
Date: 1994-01-01T00:00:00Z
Institution: San Jose State University

Title: Neogene folding and faulting in southern Monterey Bay
Description: by Joan Marie Garner-Taggart, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1991.,
Date: 1991-01-01T00:00:00Z
Institution: San Jose State University

Title: The quaternary tephrochronology of the Gulf of Mexico
Description: by Jeffrey J. Muller, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1987.,
Date: 1987-01-01T00:00:00Z
Institution: San Jose State University

Title: Evolution of the Ascension Submarine Canyon: central California continental margin
Description: by David Kenneth Nagel, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1983.,
Date: 1983-01-01T00:00:00Z
Institution: San Jose State University

Title: Late Tertiary/Quaternary magnetostratigraphy and biostratigraphy of Vema Channel sediments,
Description: Twenty-one piston cores in a transect of the Vema Channel near 31°S were analyzed magnetostratigraphically and biostratigraphically in order to ascertain the depositional continuity in the late Tertiary and Quaternary. The cores span a depth interval of 2941-4235 m and represent three distinct physiographic provinces, each of which shows a relatively consistent accumulation pattern. The deepest cores are from the broad terraces which flank the Vema Channel axis on both the west (∼3650 mm) and east (4150-4250 m); these cores show the highest accumulation rates in the region (>20 m m.y.-2) and no evidence of unconformities. Twelve cores from the flanks of the Rio Grande Rise (2941-3950 m) show depositional continuity in the late Quaternary and normal pelagic accumulation rates (5-10 m m.y.-2), with evidence in two of the cores for minor erosional hiatuses on a local scale, perhaps due to slumping. A relatively narrow transition zone between the Rio Grande Rise flanks and the eastern terrace (3950-4150 m) shows buried manganese pavements and near-outcrops of Miocene/Pliocene strata, indicating intermittent erosion during the late Tertiary and Quaternary, perhaps due to episodes of intensified AABW flow. Modern flow within this transition zone and over the eastern terrace is relatively weak ( \ ̄gu ≈ 2 cm s-2) and southward. The presence of well-developed sediment waves on the terrace and buried erosional unconformities upslope to the east suggests substantially higher current velocities during the late Tertiary than those present today., Cited By (since 1996):2, CODEN: MAGEA, ,
Author: Johnson, Ledbetter, Tappa, Thunell
Date: 1984-01-01T00:00:00Z

Title: Recent sediment accumulation rates on the Monterey fan
Description: by William L. Hughes, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1988.
Date: 1988-01-01T00:00:00Z
Institution: San Jose State University

Title: Geologic history of Elkhorn Slough, Monterey County, California
Description: by David Lee Schwartz, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) - San Jose State University, December 1983.,
Date: 1983-01-01T00:00:00Z
Institution: San Jose State University

Title: Multi-scale geomorphologic expressions of outcrop lithology in rocky intertidal habitats in central-northern California
Description: by Ashley Noelle Wheeler, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Francisco State University, 2015.
Date: 2015-01-01T00:00:00Z
Institution: San Francisco State University

Title: Connections between Pleistocene millenial climate and sediment variability in the Pacific Sub-Arctic
Description: by Michelle Kim Drake, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Francisco State University, 2013.
Date: 2013-01-01T00:00:00Z
Institution: San Francisco State University

Title: Echo character of off-platform carbonates,
Description: A comprehensive study of the nature and distribution of echo types recorded on short-ping (2-5 msec), high-frequency (3.5 kHz) echograms combined with analyses of 100 bottom samples from the off-platform carbonate environment of Northwest Providence Channel (NWPC), Bahamas, has defined qualitative relationships between echo types, sedimentary processes and sediment types. Seven distinct echo types have been observed and their areal distributions mapped. These seven types fall into three larger groups: (I) Distinct; (II) Indistinct; and (III) Hyperbolic. A strong correlation of echo character with sediment type exists for the one distinct (IB) and two indistinct (IIA and IIB) echo types observed. Muddy, pelagic sediments occur in regions characterized by distinct, sharp, continuous, parallel, sub-bottom reflectors (Type IB). Pelagic sediments interbedded with coarse-sediment gravity-flow deposits or slope breccia are characterized by indistinct, discontinuous, intermittent sub-bottom reflectors (Type IIA). Coarse current-winnowed sands or thick biolithoclastic turbidites found near the surface correlate with regions characterized by an indistinct, prolonged echo with no sub-bottom reflectors (Type IIB). Hyperbolic echoes were observed from both erosional and constructional features. The most common echo type (IIIA) in NWPC consists of large, irregular, overlapping hyperbolae with varying vertex elevations above the sea floor which originate from areas of large-scale submarine erosional topography. This echo type is much more common on the slope south of Little Bahama Bank than north of Great Bahama Bank, indicating different sedimentary processes operative along these two deep carbonate bank margins. In contrast, echoes consisting of discrete single hyperbolae with approximately equal vertex elevations above the sea floor (Type IIIG) correlate with in-situ constructional deep-water bioherms (lithoherms). This study demonstrates the usefulness of 3.5-kHz profiles in mapping near-surface off-platform carbonate sediments. The relationships between echo types and sedimentary processes and/or sediment types described here in a region with good bottom-sample control may serve as a model to facilitate rapid mapping of off-platform carbonates in areas where there is less control. © 1979., Cited By (since 1996):6, Oceanography, CODEN: MAGEA, ,
Author: Mullins, Boardman, Neumann
Date: 1979-01-01T00:00:00Z

Title: Marine geology and potential rockfish habitat in the Southwestern San Juan Islands, Washington
Description: by Janet E. Tilden., "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- California State University, Monterey Bay, 2004.,
Date: 2004-01-01T00:00:00Z
Institution: California State University, Monterey Bay

Title: Depositional history at a site in the northwestern Gulf of Mexico revealed by tephrochronology and oxygen isotope stratigraphy
Description: by Cynthia Louise Brown, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- San Jose State University, 1990.,
Date: 1990-01-01T00:00:00Z
Institution: San Jose State University

Title: Origin and paleoceanographic significance of laminations in hemipelagic biosiliceous sediments: Examples from the Peru margin and the Monterey Formation, California
Description: by Jennifer Desiree Dreyer, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- California State University, Monterey Bay, 2011.
Date: 2011-01-01T00:00:00Z
Institution: California State University, Monterey Bay

$Bottom-current speed in the Vema Channel recorded by particle size of sediment fine-fraction$

Title: Bottom-current speed in the Vema Channel recorded by particle size of sediment fine-fraction,
Description: The particle-size distribution of the carbonate-free silt fraction was determined in forty-two core-top samples from the east flank of the Vema Channel in order to allow comparison of the mean particle size with near-bottom current speed based on nearby CTD and current-meter observations. The silt mean particle size fluctuates insignificantly between 1450-3950 m but coarsens markedly below 4000 m under Antarctic-source bottom currents. The top of the zone of coarse sizes approximates the top of Lower Circumpolar Water (LCPW) at ∼4000 m; the steep gradient to coarsest sizes in the axis of the channel marks the transition to Antarctic Bottom Water (AABW). The vertical profile of mean particle size on the east flank correlates in general respects with the vertical velocity gradient in the channel axis although the core sites on the east flank are as far as ∼200 miles from the current-meter arrays. Nevertheless, this relationship is used to infer that the non-carbonate particle sizes deposited on the east flank of the channel may be an indication of bottom-current speed and, therefore, the mean size is used to reconstruct profiles of mean current speed for three time slices (18, 120 and 140 ka B.P.). During glacial isotopic stages 2 and 6 the particle sizes deposited on the east flank of the channel are characterized by finer sizes at nearly all depths and the zone of coarse sizes corresponding to LCPW and AABW deepens. During interglacial isotopic stage 5e, the particlesize profile is very similar to the modern profile; however, LCPW and AABW appear to be deeper than at present. The finer particle sizes deposited at nearly all depths during glacial periods indicates that the velocity of deep circulation in the Atlantic was reduced in response to the ice ages. Deep circulation during isotopic stage 5e closely resembled modern circulation; however, AABW production rates may have been less that at present. © 1984., Cited By (since 1996):16, Rocks and Cores, CODEN: MAGEA, ,
Author: Ledbetter
Date: 1984-01-01T00:00:00Z

Title: Tracking icebergs and sea ice in the mid-Pleistocene Bering Sea suggests sea ice affects ice sheet growth
Description: by Vera Jesser Lawson, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- California State University, Monterey Bay, 2016.
Date: 2016-01-01T00:00:00Z
Institution: California State University, Monterey Bay

Title: Monitoring harbor dredging and sedimentary changes in coastal habitats of the Santa Cruz Bight, California
Description: by Steven G. Watt., "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- California State University, Monterey Bay, 2003.,
Date: 2003-01-01T00:00:00Z
Institution: California State University, Monterey Bay

Title: The geology, geochemistry and ecology of a shallow submarine hydrothermal vent in Bahia Concepcion, Baja California Sur, Mexico
Description: by Matthew J. Forrest, "A thesis presented to the faculty of Moss Landing Marine Laboratories.", Thesis (M.S.) -- California State University, Monterey Bay, 2004.
Date: 2004-01-01T00:00:00Z
Institution: California State University, Monterey Bay

Title: The role of internal tides in the nutrient enrichment of Monterey Bay, California,
Description: Semidiurnal internal tides in Monterey Canyon are shown to be partially responsible for macronutrient enrichment of surface waters in Monterey Bay, California. CTD time series at five stations in the canyon revealed the presence of semidiurnal internal tides with heights between 50 and 120 m. p Thermistor data demonstrated an internal tidal bore at the head of the canyon. Data and theory suggest that internal tidal bores may be breaking, due to either shear instability or direct overturning, thereby enriching the immediate area near the canyon head. Transects normal to Monterey Canyon showed a 20-m thick lens of 12 °C water moving out of the canyon at high internal tide. This lens was then pinched off from the canyon, and led to a density-induced divergence. The nutrient transport associated with the internal tidal divergence could support as much as 30% of the daily primary productivity in the northern part of Monterey Bay during non-upwelling periods. © 1982., Cited By (since 1996):29, Oceanography, CODEN: ECSSD, ,
Author: Shea, Broenkow
Date: 1982-01-01T00:00:00Z

Title: Neogene folding and faulting in southern Monterey Bay, Central California, USA,
Description: The goal of this study was to determine the Neogene structural history of southern Monterey Bay by mapping and correlating the shallow tectonic structures with previously identified deeper occurring structures. Side scan sonographs and Uniboom seismic reflection profiles collected in the region suggest that deformation associated with both compressional and transcurrent movement is occurring. Strike-slip movement between the North American and Pacific plates started as subduction ceased 21 Ma, creating the San Andreas fault system. Clockwise rotation of the Pacific plate occurred between 3.4 and 3.9 Ma causing orthogonal convergence between the two plates. This plate rotation is responsible for compressional Neogene structures along the central California coast. Structures exhibit transpressional tectonic characteristics such as thrust faulting, reverse faulting and asymmetrical folding. Folding and faulting are confined to middle Miocene and younger strata. Shallow Mesozoic granitic basement rocks either crop out or lie near the surface in most of the region and form a possible décollement along which the Miocene Monterey Formation has decoupled and been folded. Over 50% of the shallow faults strike normal (NE-SW) to the previously identified faults. Wrench fault tectonics complicated by compression, gradual uplift of the basement rocks, and a change in plate convergence direction are responsible for the observed structures in southern Monterey Bay. © 1993., Cited By (since 1996):3, CODEN: MAGEA, ,
Author: Gardner-Taggart, Greene, Ledbetter
Date: 1993-01-01T00:00:00Z

Title: Scientific diving techniques,
Description: Many innovations in diving training, equipment, and design, modification, and fabrication of scientific equipment for use underwater have been developed over the past few decades. Scientific diving has pioneered or utilized techniques for marking and mapping sites, making geological collections, collecting physical oceanographic data, conducting archaeological investigations, and many types of biological experiments, including estimation of benthic populations and fish communities. Scientific divers have also found many useful applications for underwater photographic and videographic cameras, quadrats and transect tapes, devices for collecting, tagging, and caging organisms, data collection and recordkeeping, and site-marking using epoxies and cements, drilling, and handling chemicals underwater., , ,
Author: Heine
Date: 2000-01-01T00:00:00Z

Title: Deep sub-seafloor prokaryotes stimulated at interfaces over geological time,
Description: The sub-seafloor biosphere is the largest prokaryotic habitat on Earth but also a habitat with the lowest metabolic rates. Modelled activity rates are very low, indicating that most prokaryotes may be inactive or have extraordinarily slow metabolism. Here we present results from two Pacific Ocean sites, margin and open ocean, both of which have deep, subsurface stimulation of prokaryotic processes associated with geochemical and/or sedimentary interfaces. At 90 m depth in the margin site, stimulation was such that prokaryote numbers were higher (about 13-fold) and activity rates higher than or similar to near-surface values. Analysis of high-molecular-mass DNA confirmed the presence of viable prokaryotes and showed changes in biodiversity with depth that were coupled to geochemistry, including a marked community change at the 90-m interface. At the open ocean site, increases in numbers of prokaryotes at depth were more restricted but also corresponded to increased activity; however, this time they were associated with repeating layers of diatom-rich sediments (about 9 Myr old). These results show that deep sedimentary prokaryotes can have high activity, have changing diversity associated with interfaces and are active over geological timescales., Cited By (since 1996):181, CODEN: NATUA, ,
Author: Parkes, Webster, Cragg, Weightman, Newberry, Ferdelman, Kallmeyer, Jørgensen, Aiello, Fry
Date: 2005-01-01T00:00:00Z

Title: High-resolution offshore 3D seismic geophysical studies of infrastructure geohazards
Description: As global earthquake activity continues to impact Communities, infrastructure, and lives, the necessity of better identification and characterization of seismic hazards becomes ever clearer. The tragic 2011 Tohoku, Japan earthquake and tsunami increased the attention on critical coastal infrastructure projects exposed to earthquake hazards. Offshore faults are more difficult to identify and characterize than onshore faults. While multibeam bathymetric surveys can reveal surface geomorphologic expression of faults, seismic source characterization studies also require investigations of fault geometry in the subsurface. High-resolution offshore geophysical surveys can be a highly valuable tool for these tasks. Specifically, the use of high-resolution three-dimensional seismic reflection investigations can provide some of the most precise information about fault location, activity, and geometry. This work will discuss how the latest generation of ultra-high-resolution/high-fidelity marine seismic systems can be used to investigate sub-sea faults, and how it applies to complex geologic hazards to coastal infrastructure.
Author: Ebuna, Mitchell, Hogan, Nishenko, Greene
Date: 2013-01-01T00:00:00Z

Title: Physiography of the Monterey Bay National Marine Sanctuary and implications about continental margin development,
Description: Combined EM-300 multibeam bathymetric data and satellite photography reveal the physiography of the continental margin between 35°50′ and 37°03′N and from the shoreline west of 122°40′ and 122°37′W, which includes Monterey Bay, in a previously unprecedented detail. Patterns in these images clearly reveal the processes that are actively influencing the current geomorphology of the Monterey Bay region, including the Monterey Bay National Marine Sanctuary (MBNMS). Our data indicates that seafloor physiography within the MBNMS results from plate margin tectonic deformation, including uplift and erosion along structural lineaments, and from fluid flow. Mass wasting is the dominant process active within the Ascension-Monterey and Sur-Partington submarine canyon systems and along the lower slopes. Meanders, slump dams, and constricted channels within the submarine canyons, especially within Monterey Canyon, slow and interrupt down-canyon sediment transport. We have identified for the first time thin sediment flows, rotational slumps, rills, depressions that may be associated with pipes, and other fluid-induced features we call 'scallops' off the Ascension slope, and suggest that fluid flow has sculptured the seafloor morphologies here. These unusual seafloor morphologies are similar to morphologies found in terrestrial areas modified by groundwater flow. © 2002 Elsevier Science B.V. All rights reserved., Cited By (since 1996):57, CODEN: MAGEA, ,
Author: Greene, Maher, Paull
Date: 2002-01-01T00:00:00Z

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