Obtaining a Seismic Image Above the Top VSP Level Using Sea Surface Multiple - A Case Study in Nam Con Son Basin, Offshore Vietnam (Russian)

2015 ◽  
Author(s):  
The Nguyen Dac ◽  
Michael Sanders ◽  
Ngo Nguyen Anh Tuan ◽  
Yuri Solovyov ◽  
Tran Duc Ninh ◽  
...  
Keyword(s):  
Sea Surface ◽  
Seismic Image

Obtaining a Seismic Image Above the Top VSP Level Using Sea Surface Multiple - A Case Study in Nam Con Son Basin, Offshore Vietnam

2015 ◽  
Author(s):  
The Nguyen Dac ◽  
Michael Sanders ◽  
Ngo Nguyen Anh Tuan ◽  
Yuri Solovyov ◽  
Tran Duc Ninh ◽  
...  
Keyword(s):  
Sea Surface ◽  
Seismic Image

scholarly journals Influence of Northwest Cloudbands on Southwest Australian Rainfall

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Nicola Telcik ◽  
Charitha Pattiaratchi
Keyword(s):  
Longwave Radiation ◽  
Reanalysis Data ◽  
Temperature Data ◽  
Sea Surface ◽  
Northwest Coast ◽  
Total Cloud Cover ◽  
Site Specific ◽  
Australian Continent ◽  
Average Rainfall

Northwest cloudbands are tropical-extratropical feature that crosses the Australian continent originating from Australia’s northwest coast and develops in a NW-SE orientation. In paper, atmospheric and oceanic reanalysis data (NCEP) and Reynolds reconstructed sea surface temperature data were used to examine northwest cloudband activity across the Australian mainland. An index that reflected the monthly, seasonal, and interannual activity of northwest cloudbands between 1950 and 1999 was then created. Outgoing longwave radiation, total cloud cover, and latent heat flux data were used to determine the number of days when a mature northwest cloudband covered part of the Australian continent between April and October. Regional indices were created for site-specific investigations, especially of cloudband-related rainfall. High and low cloudband activity can affect the distribution of cloudbands and their related rainfall. In low cloudband activity seasons, cloudbands were mostly limited to the south and west Australian coasts. In high cloudband activity seasons, cloudbands penetrated farther inland, which increased the inland rainfall. A case study of the southwest Australian region demonstrated that, in a below average rainfall year, cloudband-related rainfall was limited to the coast. In an above average rainfall year, cloudband-related rainfall occurred further inland.

Return to Little Harbor, Santa Catalina Island, California: A Critique of the Marine Paleotemperature Model

1995 ◽  
Vol 60 (2) ◽  
pp. 287-308 ◽  
Author(s):  
L. Mark Raab ◽  
Katherine Bradford ◽  
Judith F. Porcasi ◽  
William J. Howard
Keyword(s):  
Sea Surface ◽  
Channel Islands ◽  
Short Term ◽  
Sea Temperature ◽  
Weak Evidence ◽  
Northern Channel Islands ◽  
Recent Case Study ◽  
Santa Catalina Island ◽  
Starvation Conditions

Marine paleotemperature is a significant factor in the subsistence productivity of many coastal regions and may be an important factor in the evolution of maritime societies. A California paleotemperature model, spanning 8,000 calendar years, correlates periods of high sea surface temperatures with decreased marine subsistence productivity. A recent case study involving this model identified warming conditions between A.D. 1150 to 1300 as a major cause of subsistence distress for dwellers of the northern Channel Islands. These results are questionable, based on a comparison with data from other sites and periods of high sea temperature. Research at the Little Harbor site, one of the most extensively researched in the Channel Islands, shows that high sea temperature about 5,200 calendar years ago may have introduced warm-water faunas but not starvation conditions. Evidence from other sites occupied during subsequent warming cycles, including the event between A.D. 1150 to 1300, points to similar conclusions. Understanding the effects of long- and short-term ocean temperature cycles, a focus on only a small segment of the Holocene paleotemperature curve, and weak evidence that food abundance was affected by sea temperature are problems that must be overcome before the validity of the paleotemperature model can be accepted.

Seismic image enhancement using CRS method; a case study from SW Iran

2012 ◽  
Author(s):  
A. Khalilzadeh ◽  
M. Soleimani Monfared ◽  
J. Jamali ◽  
I. Piruz ◽  
J. Mann
Keyword(s):  
Image Enhancement ◽  
Seismic Image ◽  
Sw Iran

Uplifting seismic image below gas pocket using FWI and Q-tomography: A case study from Baiyun survey

2020 ◽  
Author(s):  
Jun Liu ◽  
Yanhui Zhu ◽  
Zhiye Li ◽  
Peng Wang ◽  
Rong Li
Keyword(s):  
Seismic Image ◽  
Q Tomography
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