Optimal survey design for full-waveform inversion via bi-level optimization

H. S. Aghamiry, S. Operto

International Meeting for Applied Geoscience and Energy (IMAGE)

... in geologically complex deep offshore areas like the Gulf of Mexico requires wide-azimuth-long/offset acquisitions allowing for the recording of diving waves...

Low-Cost Flexible Riser Replacement on FPSO in a Marginal Field

Isara Boondao

Indonesian Petroleum Association

... on the vessel are the result of the action of wind, current and waves. The directional conventions for the environmental loads are presented in Figure 6...

Grain Surface Features in Environmental Determination of Late Quaternary Deposits in New South Wales

Cheng K. Ly

Journal of Sedimentary Research (SEPM)

... of approximately 15-20 m below mean sea level. The inner part of the zone (0-10 m)is strongly influenced by the passage of broken waves and longshore currents...

Depositional Facies of High-Energy Beach-to-Offshore Sequence: Comparison with Low-Energy Sequence

James D. Howard , Hans-Erich Reineck

AAPG Bulletin

... diving indicated that many areas of the bottom are characterized by ripple marks or incipient ripple marks at the sediment-water interface under Click...

Field Conference: Southern California Coastal Wetlands

Prem K. Saint, Neil J. Maloney, Tony Bomkamp

Pacific Section SEPM

... by the energy of waves. Total area generally exceeds 20 acres; subsystems include: limnetic (deepwater) and littoral (wetland) types. Example: McGrath Lake...

Krakatau Events and Geology

Indonesian Petroleum Association

... than 100 villages around the Sunda Strait. The loss of human life was primarily linked to the very large waves (tsunami) caused by the explosion...

"Bootstrap" Corer

John D. Isaacs, Daniel M. Brown

Journal of Sedimentary Research (SEPM)

... to top. The diving nose, made from hardened steel, is held in place by set screws (not shown) through the diving head adapter. This configuration thus...

Strudel Scour: A Unique Arctic Marine Geologic Phenomenon

Erk Reimnitz, Craig A. Rodeick, Stephen C. Wolf

Journal of Sedimentary Research (SEPM)

... and their filled counterparts were studied by side-scan sonar, echosounder, high-resolution seismic gear, diving observations, and sediment sampling...

Formative Mechanisms in a Modern Depocenter

J. M. Coleman, L. D. Wright

Houston Geological Society

.... River-mouth sediments contain abundant methane and carbon dioxide gases, formed by decomposing colloidal organics. Hurricane waves produce bottom...

Formative Mechanisms in a Modern Depocenter

J. M. Coleman, L. D. Wright

New Orleans Geological Society

... gases, formed by decomposing colloidal organics Hurricane waves produce bottom pressure perturbations, forcing the entrapped gas upward and allowing...

Introduction to Offshore Geologic Hazards: Section 1: PART 2

Arnold H. Bouma

AAPG Special Volumes

..., Determination of extreme values of waves, winds, currents and tides for the design of offshore structure. Jour. Am. Assoc. Petroleum Eng., p. 166-174...

The Relict Nature of the Sediments and Submarine Topography Off Alligator Harbor, Florida

E. M. Hopkins, H. G. Goodell, S. A. Chesser, J. P. May, D. J. Poche

GCAGS Transactions

... area and has been investigated by SCUBA diving (Vause 1959). Vause found a thin sediment cover on most parts of the limestone plain. The local relief...

A Textural Study of Marine Sediments in a Portion of Cardigan Bay (Wales)

Anthony S. G. Jones

Journal of Sedimentary Research (SEPM)

... sand waves in the Irish Sea. Marine Geology, 4, p. 49-55. HARVEY, J. G., 1968, The movement of sea-bed and sea-surface drifters in the Irish Sea...

The Bahamas and Southern Florida: A Model For Carbonate Deposition

Gerald M. Friedman

Oklahoma City Geological Society

... in which secondary porosity was prone to develop after deposition. These environments include (1) the high energy zone of strong currents or waves where...

Carbonate and Volcanic Sediment Distribution Patterns on the Grenadines Bank, Lesser Antilles Island Arc, East Caribbean

Sarmistha Dey, Leigh Smith

CSPG Bulletin

... considerable local variation in current flow and strength (Fig. 4). The waves are affected by this seasonal variation in the winds resulting in strong waves...

Modem Reefs in the West Java Sea

Michael E. Scrutton

Southeast Asia Petroleum Exploration Society (SEAPEX)

.... Observations and sediment sampling were carried out during SCUBA diving, although on long sediment sampling profiles in inter-reef channel or shelf areas...

Modern Reefs in the West Java Sea

Michael E. Scrutton

Indonesian Petroleum Association

... and sediment sampling were carried out during SCUBA diving, although on long sediment sampling profiles in inter-reef channel or shelf areas a van...

Part 3: Support Data (B)

Francis P. Shepard, Neil F. Marshall, Patrick A. McLoughlin, Gary G. Sullivan

AAPG Special Volumes

.... Med., v. 8, p. 327-351. LaFond, E. C., 1962, Internal waves, in M. N. Hill, ed., The sea: New York, Interscience, v. 1, p. 731-763. Lambert, A. M., K...

Geology and Geochemistry of Reefs, Carbonate Sediments, and Waters, Gulf of Aqaba (Elat), Red Sea

Gerald M. Friedman

Journal of Sedimentary Research (SEPM)

...). North and northeast winds blow steadily along the Gulf ("chimney effect"), and waves and cu rents on the northwestern coast studied...

Fluviatile Obstacle Marks from the Wadis of the Negev (Southern Israel)

Iaakov Karcz

Journal of Sedimentary Research (SEPM)

... components create a diving motion which scours the bed upstream of the obstacle. It appears that the bed-transformation near hydraulic structures...

FWI for the complex Walker Ridge salt province using streamer data

Dorothy Ren, Xin He, Siyun Xu, Fei Gao, Feng Lin, Jiawei Mei

International Meeting for Applied Geoscience and Energy (IMAGE)

.... This is especially true in deep sections beyond diving wave penetration depth, which require better input data with long offset, full azimuth, and good low...

Enigmatic linear furrows and pits on the upper continental slope, northwest Labrador Sea: are they sediment furrows or feeding traces?

Heiner Josenhans, Chris Woodworth-Lynas

Atlantic Geology

... three tentative mechanisms for furrow formation: (1) formation by dragging of fins or mandibles of deep diving animals such as whales as they forage...

Recent Sedimentary Facies of Isolated Carbonate Platforms, Belize-Yucatan System, Central America

Eberhard Gischler , Anthony J. Lomando

Journal of Sedimentary Research (SEPM)

... of 454 surface sediment samples (200-400 g each) were taken by free diving, SCUBA diving, and sediment grab sampling (model "mud-snapper", KAHLSICO...

NEW QUANTITATIVE DESCRIPTORS (SHAPE AND MACROBORING) OF BIOGENIC NODULES: EXAMPLES FROM THE LESSER ANTILLES AND NEW ZEALAND

VINCENT CARON, BRICE DESCHAMPS, ALEXANDRE ROBERT-DUARTE, JULIEN BAILLEUL

PALAIOS

... a Macroboring index (Mi) significantly higher than that of rhodoliths from shallower environments, due to discontinuous influence of waves and currents...

Loss of Hawaiian Littoral Sand

Ralph Moberly, Jr.

Journal of Sedimentary Research (SEPM)

... of the beach changes in Hawaii are temporary, caused by local storms, seasonal changes in types of ocean waves (Moberly, Baver, and Morrison, 1965...