際際滷shows by User: LukmanArief2 / http://www.slideshare.net/images/logo.gif 際際滷shows by User: LukmanArief2 / Tue, 02 Jul 2013 03:38:06 GMT 際際滷Share feed for 際際滷shows by User: LukmanArief2 Lukman arief water column effect /slideshow/lukman-arief-water-column-effect/23774851 lukmanarief-watercolumneffect-130702033806-phpapp01
Sea water parameters, i.e. salinity, temperature and tidal are always vary in value. Variations in the water column can be divided into two categories. Firstly, tides, weather, and currents can affect the elevation of the sea surface. Secondly, changes in salinity and water temperature can induce variation in water velocity. Variations in the water column at a three-dimensional survey can induce time shift, resulting in a lateral discontinuity in crossline section. This final project is to discuss how far the changes in salinity and temperature, changes in tidal height and change of both in simultaneously (the effect of water column) can affect the continuity of crossline reflection on a acquisition survey. This study is started from the discovery of high temperature and salinity values of a sea water to determine water velocity. For the modeling, seismic velocity and tidal values are simulated randomly to simulate a sailline. From the result it can be concluded that for the marine acquisition with a depth of 1000 m, tides up to 12 meters can cause timeshift by 12 ms. Sea water velocity that varies from 1493 m/s up to 1503 m/s can cause up to 12 ms time shift, while 2 meters in tidal difference and 3 m/s in velocity variation can be ignored. Effects of water column consisting of water velocity variations and tidal variations can cause up to 25 ms time shift. If not corrected, this large time shift would cause lateral discontinuities in crossline section.]]>
Sea water parameters, i.e. salinity, temperature and tidal are always vary in value. Variations in the water column can be divided into two categories. Firstly, tides, weather, and currents can affect the elevation of the sea surface. Secondly, changes in salinity and water temperature can induce variation in water velocity. Variations in the water column at a three-dimensional survey can induce time shift, resulting in a lateral discontinuity in crossline section. This final project is to discuss how far the changes in salinity and temperature, changes in tidal height and change of both in simultaneously (the effect of water column) can affect the continuity of crossline reflection on a acquisition survey. This study is started from the discovery of high temperature and salinity values of a sea water to determine water velocity. For the modeling, seismic velocity and tidal values are simulated randomly to simulate a sailline. From the result it can be concluded that for the marine acquisition with a depth of 1000 m, tides up to 12 meters can cause timeshift by 12 ms. Sea water velocity that varies from 1493 m/s up to 1503 m/s can cause up to 12 ms time shift, while 2 meters in tidal difference and 3 m/s in velocity variation can be ignored. Effects of water column consisting of water velocity variations and tidal variations can cause up to 25 ms time shift. If not corrected, this large time shift would cause lateral discontinuities in crossline section.]]> Tue, 02 Jul 2013 03:38:06 GMT /slideshow/lukman-arief-water-column-effect/23774851 LukmanArief2@slideshare.net(LukmanArief2) Lukman arief water column effect LukmanArief2 Sea water parameters, i.e. salinity, temperature and tidal are always vary in value. Variations in the water column can be divided into two categories. Firstly, tides, weather, and currents can affect the elevation of the sea surface. Secondly, changes in salinity and water temperature can induce variation in water velocity. Variations in the water column at a three-dimensional survey can induce time shift, resulting in a lateral discontinuity in crossline section. This final project is to discuss how far the changes in salinity and temperature, changes in tidal height and change of both in simultaneously (the effect of water column) can affect the continuity of crossline reflection on a acquisition survey. This study is started from the discovery of high temperature and salinity values of a sea water to determine water velocity. For the modeling, seismic velocity and tidal values are simulated randomly to simulate a sailline. From the result it can be concluded that for the marine acquisition with a depth of 1000 m, tides up to 12 meters can cause timeshift by 12 ms. Sea water velocity that varies from 1493 m/s up to 1503 m/s can cause up to 12 ms time shift, while 2 meters in tidal difference and 3 m/s in velocity variation can be ignored. Effects of water column consisting of water velocity variations and tidal variations can cause up to 25 ms time shift. If not corrected, this large time shift would cause lateral discontinuities in crossline section. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/lukmanarief-watercolumneffect-130702033806-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Sea water parameters, i.e. salinity, temperature and tidal are always vary in value. Variations in the water column can be divided into two categories. Firstly, tides, weather, and currents can affect the elevation of the sea surface. Secondly, changes in salinity and water temperature can induce variation in water velocity. Variations in the water column at a three-dimensional survey can induce time shift, resulting in a lateral discontinuity in crossline section. This final project is to discuss how far the changes in salinity and temperature, changes in tidal height and change of both in simultaneously (the effect of water column) can affect the continuity of crossline reflection on a acquisition survey. This study is started from the discovery of high temperature and salinity values of a sea water to determine water velocity. For the modeling, seismic velocity and tidal values are simulated randomly to simulate a sailline. From the result it can be concluded that for the marine acquisition with a depth of 1000 m, tides up to 12 meters can cause timeshift by 12 ms. Sea water velocity that varies from 1493 m/s up to 1503 m/s can cause up to 12 ms time shift, while 2 meters in tidal difference and 3 m/s in velocity variation can be ignored. Effects of water column consisting of water velocity variations and tidal variations can cause up to 25 ms time shift. If not corrected, this large time shift would cause lateral discontinuities in crossline section.
Lukman arief water column effect from Lukman Arief
]]> 384 3 https://cdn.slidesharecdn.com/ss_thumbnails/lukmanarief-watercolumneffect-130702033806-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Laporan kerja praktek Lukman Arief /slideshow/laporan-kerja-praktek-lukman-arief/23325958 laporankerjapraktek-lukmanarief-130622092514-phpapp02
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]]> Sat, 22 Jun 2013 09:25:14 GMT /slideshow/laporan-kerja-praktek-lukman-arief/23325958 LukmanArief2@slideshare.net(LukmanArief2) Laporan kerja praktek Lukman Arief LukmanArief2 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/laporankerjapraktek-lukmanarief-130622092514-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br>
Laporan kerja praktek Lukman Arief from Lukman Arief
]]> 722 2 https://cdn.slidesharecdn.com/ss_thumbnails/laporankerjapraktek-lukmanarief-130622092514-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 https://cdn.slidesharecdn.com/profile-photo-LukmanArief2-48x48.jpg?cb=1720411653 id.linkedin.com/in/lukmanarief https://cdn.slidesharecdn.com/ss_thumbnails/lukmanarief-watercolumneffect-130702033806-phpapp01-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/lukman-arief-water-column-effect/23774851 Lukman arief water c... https://cdn.slidesharecdn.com/ss_thumbnails/laporankerjapraktek-lukmanarief-130622092514-phpapp02-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/laporan-kerja-praktek-lukman-arief/23325958 Laporan kerja praktek ...