Short-term evolution of Po della Pila delta lobe from time lapse high-resolution multibeam bathymetry (2013–2016)

With the instruction of the high resolution sequence stratigraphy and sedimentology theory, and the comprehensive application of 11 wells core, more than 800 mud logging and log data, high resolution sequence stratigraphic characteristics research in the XII Group of the Member III of Qing Shankou Formation in the Qianan oilfield has been finished. The results show that the study area can be divided into one middle-term base level cycle and five short-term base level cycles. The only sequence structure of middle term cycle is (B type) and the short term cycle mainly consists of B types meanwhile there are small mounts of upward deepening structures (A type) and symmetric structures (C type). Based on the classification of base-level cycles, fine stratigraphic correlation is conducted by using isochronous cycle correlations. In addition, 15 high resolution sequence stratigraphic frameworks are established which unify the study area and provide the solid geological basis for the sandstone distribution, the identification of mainly oil-bearing sand bodies and potential oil reservoirs.

Download Full-text

High-resolution multibeam bathymetry of the northern Mid-Atlantic Ridge at 45–46° N: the Moytirra hydrothermal field

Journal of Maps ◽

10.1080/17445647.2021.1898485 ◽

2021 ◽

Vol 17 (2) ◽

pp. 184-196

Author(s):

Luis Somoza ◽

Teresa Medialdea ◽

Francisco J. González ◽

Sara Machancoses ◽

Jose A. Candón ◽

...

Keyword(s):

High Resolution ◽

Hydrothermal Field ◽

Multibeam Bathymetry ◽

Mid Atlantic Ridge

Download Full-text

Physical modeling of the cross-shore short-term evolution of protected and unprotected beach nourishments

Ocean Engineering ◽

10.1016/j.oceaneng.2010.02.008 ◽

2010 ◽

Vol 37 (8-9) ◽

pp. 777-789 ◽

Cited By ~ 25

Author(s):

M. Di Risio ◽

I. Lisi ◽

G.M. Beltrami ◽

P. De Girolamo

Keyword(s):

Physical Modeling ◽

Short Term ◽

Term Evolution ◽

The Cross

Download Full-text

Joint Discussion 4 UV astronomy: stars from birth to death

Proceedings of the International Astronomical Union ◽

10.1017/s1743921307010083 ◽

2006 ◽

Vol 2 (14) ◽

pp. 169-194

Author(s):

Ana I. Gómez de Castro ◽

Martin A. Barstow

Keyword(s):

High Resolution ◽

Uv Spectroscopy ◽

Broad Band ◽

Mission Planning ◽

High Resolution Spectroscopy ◽

Low Resolution ◽

Short Term ◽

Uv Astronomy ◽

Optical Telescope ◽

The Moment

AbstractThe scientific program is presented as well a the abstracts of the contributions. An extended account is published in “The Ultraviolet Universe: stars from birth to death” (Ed. Gómez de Castro) published by the Editorial Complutense de Madrid (UCM), that can be accessed by electronic format through the website of the Network for UV Astronomy (www.ucm.es/info/nuva).There are five telescopes currently in orbit that have a UV capability of some description. At the moment, only FUSE provides any medium- to high-resolution spectroscopic capability. GALEX, the XMM UV-Optical Telescope (UVOT) and the Swift. UVOT mainly delivers broad-band imaging, but with some low-resolution spectroscopy using grisms. The primary UV spectroscopic capability of HST was lost when the Space Telescope Imaging Spectrograph failed in 2004, but UV imaging is still available with the HST-WFPC2 and HST-ACS instruments.With the expected limited lifetime of sl FUSE, UV spectroscopy will be effectively unavailable in the short-term future. Even if a servicing mission of HST does go ahead, to install COS and repair STIS, the availability of high-resolution spectroscopy well into the next decade will not have been addressed. Therefore, it is important to develop new missions to complement and follow on from the legacy of FUSE and HST, as well as the smaller imaging/low resolution spectroscopy facilities. This contribution presents an outline of the UV projects, some of which are already approved for flight, while others are still at the proposal/study stage of their development.This contribution outlines the main results from Joint Discussion 04 held during the IAU General Assembly in Prague, August 2006, concerning the rationale behind the needs of the astronomical community, in particular the stellar astrophysics community, for new UV instrumentation. Recent results from UV observations were presented and future science goals were laid out. These goals will lay the framework for future mission planning.

Download Full-text

Acquire Ocean Bottom Seismic Data and Time-Lapse Geochemistry Data Simultaneously to Identify Compartmentalization and Map Hydrocarbon Movement

10.4043/30975-ms ◽

2021 ◽

Author(s):

Rick Schrynemeeckers

Keyword(s):

High Resolution ◽

Seismic Data ◽

Time Lapse ◽

Field Trials ◽

Detection Methods ◽

Ocean Bottom ◽

Field Development ◽

Dense Grid ◽

Hydrocarbon Charge ◽

Sweet Spots

Abstract Current offshore hydrocarbon detection methods employ vessels to collect cores along transects over structures defined by seismic imaging which are then analyzed by standard geochemical methods. Due to the cost of core collection, the sample density over these structures is often insufficient to map hydrocarbon accumulation boundaries. Traditional offshore geochemical methods cannot define reservoir sweet spots (i.e. areas of enhanced porosity, pressure, or net pay thickness) or measure light oil or gas condensate in the C7 – C15 carbon range. Thus, conventional geochemical methods are limited in their ability to help optimize offshore field development production. The capability to attach ultrasensitive geochemical modules to Ocean Bottom Seismic (OBS) nodes provides a new capability to the industry which allows these modules to be deployed in very dense grid patterns that provide extensive coverage both on structure and off structure. Thus, both high resolution seismic data and high-resolution hydrocarbon data can be captured simultaneously. Field trials were performed in offshore Ghana. The trial was not intended to duplicate normal field operations, but rather provide a pilot study to assess the viability of passive hydrocarbon modules to function properly in real world conditions in deep waters at elevated pressures. Water depth for the pilot survey ranged from 1500 – 1700 meters. Positive thermogenic signatures were detected in the Gabon samples. A baseline (i.e. non-thermogenic) signature was also detected. The results indicated the positive signatures were thermogenic and could easily be differentiated from baseline or non-thermogenic signatures. The ability to deploy geochemical modules with OBS nodes for reoccurring surveys in repetitive locations provides the ability to map the movement of hydrocarbons over time as well as discern depletion affects (i.e. time lapse geochemistry). The combined technologies will also be able to: Identify compartmentalization, maximize production and profitability by mapping reservoir sweet spots (i.e. areas of higher porosity, pressure, & hydrocarbon richness), rank prospects, reduce risk by identifying poor prospectivity areas, accurately map hydrocarbon charge in pre-salt sequences, augment seismic data in highly thrusted and faulted areas.

Download Full-text