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Reverse Time Migration and Green's Theorem- Professor. Arthur B. Weglein
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Reverse Time Migration and Green's Theorem- Professor. Arthur B. Weglein
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The significance of incorporating a 3D point source in the ISS internal multiple attenuator for a 1D subsurface - Xinglu Lin* and Arthur Weglein
Arthur weglein
Arthur weglein
Arthur Weglein
A new and general wave theoretical wavelet estimation method is derived. Knowing the seismic wavelet is important both for processing seismic data and for modeling the seismic response. To obtain the wavelet, both statistical (e.g., Wiener-Levinson) and deterministic (matching surface seismic to well-log data) methods are generally used. In the marine case, a far-field signature is often obtained with a deep-towed hydrophone. The statistical methods do not allow obtaining the phase of the wavelet, whereas the deterministic method obviously requires data from a well. The deep-towed hydrophone requires that the water be deep enough for the hydrophone to be in the far field and in addition that the reflections from the water bottom and structure do not corrupt the measured wavelet. None of the methods address the source array pattern, which is important for amplitude-versus- offset (AVO) studies.
Wavelet estimation for a multidimensional acoustic or elastic earth
Wavelet estimation for a multidimensional acoustic or elastic earth
Arthur Weglein
The inverse scattering series for tasks associated with primaries: direct non-linear inversion of 1D elastic media. In this paper, research on direct inversion for two pa- rameter acoustic media (Zhang and Weglein, 2005) is extended to the three parameter elastic case. We present the first set of direct non-linear inversion equations for 1D elastic media (i.e., depth varying P-velocity, shear velocity and density). The terms for moving mislocated reflectors are shown to be separable from amplitude correction terms. Although in principle this direct inversion approach requires all four components of elastic data, synthetic tests indicate that consistent value-added results may be achieved given only ˆDPP measurements. We can reasonably infer that further value would derive from actually measuring ˆDPP , ˆD PS, ˆDSP and ˆDSS as the method requires. The method is direct with neither a model matching nor cost function minimization.
The inverse scattering series for tasks associated with primaries: direct non...
The inverse scattering series for tasks associated with primaries: direct non...
Arthur Weglein
Internal multiple attenuation using inverse scattering: Results from prestack 1 & 2D acoustic and elastic synthetics R. T. Coates*, Schlumberger Cambridge Research, A. B. Weglein, Arco Exploration and Production Technology Summary The attenuation of internal multiples in a multidimensional earth is an important and longstanding problem in exploration seismics. In this paper we report the results of applying an attenuation algorithm based on the inverse scattering series to synthetic prestack data sets generated in on and two dimensional earth models. The attenuation algorithm requires no information about the subsurface structure or the velocity field. However, detailed information about the source wavelet is a prerequisite. An attractive feature of: the attenuation algorithm is the preservation of the amplitude (and phase) of primary events in the data; thus allowing for subsequent AVO and other true amplitude processing.
Coates weglein-1996
Coates weglein-1996
Arthur Weglein
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Factoring sichert Käufe in Onlineshops zu 100% ab - und sorgt gleichzeitig dafür, dass der Händler schnellstmöglich sein Geld erhält. Wenn ein White Label Ansatz gewählt wird und der Käufer überhaupt nichts davon mitbekommt, dass die Forderung verkauft wurde, spricht man auch von "Stillem Factoring". Ralf Linden, Director of Sales & Marketing der UNIVERSUM Group, erläutert im Interview die Vorteile dieser Lösung. Mehr unter: http://www.universum-group.de/loesungen/flexipay-ecommerce-loesungen/factoring/
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Plus de Arthur Weglein
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The significance of incorporating a 3D point source in the ISS internal multiple attenuator for a 1D subsurface - Xinglu Lin* and Arthur Weglein
Arthur weglein
Arthur weglein
Arthur Weglein
A new and general wave theoretical wavelet estimation method is derived. Knowing the seismic wavelet is important both for processing seismic data and for modeling the seismic response. To obtain the wavelet, both statistical (e.g., Wiener-Levinson) and deterministic (matching surface seismic to well-log data) methods are generally used. In the marine case, a far-field signature is often obtained with a deep-towed hydrophone. The statistical methods do not allow obtaining the phase of the wavelet, whereas the deterministic method obviously requires data from a well. The deep-towed hydrophone requires that the water be deep enough for the hydrophone to be in the far field and in addition that the reflections from the water bottom and structure do not corrupt the measured wavelet. None of the methods address the source array pattern, which is important for amplitude-versus- offset (AVO) studies.
Wavelet estimation for a multidimensional acoustic or elastic earth
Wavelet estimation for a multidimensional acoustic or elastic earth
Arthur Weglein
The inverse scattering series for tasks associated with primaries: direct non-linear inversion of 1D elastic media. In this paper, research on direct inversion for two pa- rameter acoustic media (Zhang and Weglein, 2005) is extended to the three parameter elastic case. We present the first set of direct non-linear inversion equations for 1D elastic media (i.e., depth varying P-velocity, shear velocity and density). The terms for moving mislocated reflectors are shown to be separable from amplitude correction terms. Although in principle this direct inversion approach requires all four components of elastic data, synthetic tests indicate that consistent value-added results may be achieved given only ˆDPP measurements. We can reasonably infer that further value would derive from actually measuring ˆDPP , ˆD PS, ˆDSP and ˆDSS as the method requires. The method is direct with neither a model matching nor cost function minimization.
The inverse scattering series for tasks associated with primaries: direct non...
The inverse scattering series for tasks associated with primaries: direct non...
Arthur Weglein
Internal multiple attenuation using inverse scattering: Results from prestack 1 & 2D acoustic and elastic synthetics R. T. Coates*, Schlumberger Cambridge Research, A. B. Weglein, Arco Exploration and Production Technology Summary The attenuation of internal multiples in a multidimensional earth is an important and longstanding problem in exploration seismics. In this paper we report the results of applying an attenuation algorithm based on the inverse scattering series to synthetic prestack data sets generated in on and two dimensional earth models. The attenuation algorithm requires no information about the subsurface structure or the velocity field. However, detailed information about the source wavelet is a prerequisite. An attractive feature of: the attenuation algorithm is the preservation of the amplitude (and phase) of primary events in the data; thus allowing for subsequent AVO and other true amplitude processing.
Coates weglein-1996
Coates weglein-1996
Arthur Weglein
Fu etal-2010
Fu etal-2010
Fu etal-2010
Arthur Weglein
A timely and necessary antidote to indirect methods and so-called P-wave FWI
Antidote final tle32101192%2 e1
Antidote final tle32101192%2 e1
Arthur Weglein
The Inverse Scattering Series (ISS) is a direct inversion method for a multidimensional acoustic, elastic and anelastic earth. It communicates that all inversion processing goals are able to be achieved directly and without any subsurface information. This task is reached through a task-specific subseries of the ISS. Using primaries in the data as subevents of the first-order internal multiples, the leading-order attenuator can predict the time of all the first-order internal multiples and is able to attenuate them. However, the ISS internal multiple attenuation algorithm can be a computationally demanding method specially in a complex earth. By using an approach that is based on two angular quantities and that was proposed in Terenghi et al. (2012), the cost of the algorithm can be controlled. The idea is to use the two angles as key-control parameters, by limiting their variation, to disregard some calculated contributions of the algorithm that are negligible. Moreover, the range of integration can be chosen as a compromise of the required degree of accuracy and the computational time saving. This time-saving approach is presented
Ayadi weglein-2013
Ayadi weglein-2013
Arthur Weglein
An Extension of Linear Inverse Scattering Methods for Absorptive Media to the Case of an Absorptive Reference
An Extension of Linear Inverse Scattering Methods for Absorptive Media to the...
An Extension of Linear Inverse Scattering Methods for Absorptive Media to the...
Arthur Weglein
A multiple attenuation method derived from an inverse scattering series is described. The inversion series approach allows a separation of multiple attenuation subseries from the full series. The surface multiple attenuation subseries was described and illustrated in Carvalho et al. (1991, 1992). The internal multiple attenuation method consists of selecting the parts of the odd terms that are associated with removing only multiply reflected energy. The method, for both types of multiples, is multidimensional and does not rely on periodicity or differential moveout, nor does it require a model of the reflectors generating the multiples. An example with internal and surface multiples will be presented.
Inverse scattering series for multiple attenuation: An example with surface a...
Inverse scattering series for multiple attenuation: An example with surface a...
Arthur Weglein
In this paper we present a multidimensional method for attenuating internal multiples that derives from an inverse scattering series . The method doesn't depend on periodicity or differential moveout, nor does it require a model for the multiple generating reflectors.
Araujo etal-1994b
Araujo etal-1994b
Arthur Weglein
Summary Methods for removal of free-surface and internal multiples have been developed from bath a feedback model approach and inverse scatterin g theory. White these two formulations derive from different mathematica) viewpoints, the resulting algorithm s for free-surface multiple are very similar. By contrast , the feedback and inverse scattering method for internal multiple are totally different and have different requirements for sub surface information or interpretive intervention . The former removes all multiple related to a certain boundary with the a of a surface integral along this boundary ; the alter wilt predict and attenuate a ll internal multiple a t the same time . In this paper, we continue our comparison study of these internal multiple attenuation method ; specifically , we examine two different realizations of the feedback method and the inverse scattering technique .
Verschuur etal-1999
Verschuur etal-1999
Arthur Weglein
The attenuation of internal multiples in a multidimensional earth is an important and longstanding problem in exploration seismics. In this paper we report the results of applying an attenuation algorithm based on the inverse scattering series to synthetic prestack data sets generated in on and two dimensional earth models. The attenuation algorithm requires no information about the subsurface structure or the velocity field. However, detailed information about the source wavelet is a prerequisite. An attractive feature of: the attenuation algorithm is the preservation of the amplitude (and phase) of primary events in the data; thus allowing for subsequent AVO and other true amplitude processing.
Internal multiple attenuation using inverse scattering: Results from prestack...
Internal multiple attenuation using inverse scattering: Results from prestack...
Arthur Weglein
A new and general wave theoretical wavelet estimation method is derived. Knowing the seismic wavelet is important both for processing seismic data and for modeling the seismic response. To obtain the wavelet, both statistical (e.g., Wiener-Levinson) and deterministic (matching surface seismic to well-log data) methods are generally used. In the marine case, a far-field signature is often obtained with a deep-towed hydrophone. The statistical methods do not allow obtaining the phase of the wavelet, whereas the deterministic method obviously requires data from a well. The deep-towed hydrophone requires that the water be deep enough for the hydrophone to be in the far field and in addition that the reflections from the water bottom and structure do not corrupt the measured wavelet. None of the methods address the source array pattern, which is important for amplitude-versus- offset (AVO) studies
Wavelet estimation for a multidimensional acoustic or elastic earth- Arthur W...
Wavelet estimation for a multidimensional acoustic or elastic earth- Arthur W...
Arthur Weglein
Hsu etal-2009
Hsu etal-2009
Arthur Weglein
Robustnesosf a New Source-Signature Estimation Method Under Realistic Data Conditions:A Deterministic-Statistical approac- Arthur Weglein
Robustnesosf a New Source-Signature Estimation Method Under Realistic Data Co...
Robustnesosf a New Source-Signature Estimation Method Under Realistic Data Co...
Arthur Weglein
Examples of a Nonlinear Inversion Method Based on the T Matrix of ScatteringT heory:A pplicationt o Multiple Suppression
Examples of a Nonlinear Inversion Method Based on the T Matrix of ScatteringT...
Examples of a Nonlinear Inversion Method Based on the T Matrix of ScatteringT...
Arthur Weglein
Dr. Arthur B. Weglein
Chang etal 2012a
Chang etal 2012a
Arthur Weglein
A multiple attenuation method derived from an inverse scattering series is described. The inversion series approach allows a separation of multiple attenuation subseries from the full series. The surface multiple attenuation subseries was described and illustrated in Carvalho et al. (1991, 1992). The internal multiple attenuation method consists of selecting the parts of the odd terms that are associated with removing only multiply reflected energy. The method, for both types of multiples, is multidimensional and does not rely on periodicity or differential moveout, nor does it require a model of the reflectors generating the multiples. An example with internal and surface multiples will be presented.
Inverse scattering series for multiple attenuation: An example with surface a...
Inverse scattering series for multiple attenuation: An example with surface a...
Arthur Weglein
Significant Practical Advantages and Disadvantages
Green's Theorem Deghostin Algorthm- Dr. Arthur B. Weglein
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Arthur Weglein
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A new OSRP business model
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Arthur weglein
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Wavelet estimation for a multidimensional acoustic or elastic earth
Wavelet estimation for a multidimensional acoustic or elastic earth
The inverse scattering series for tasks associated with primaries: direct non...
The inverse scattering series for tasks associated with primaries: direct non...
Coates weglein-1996
Coates weglein-1996
Fu etal-2010
Fu etal-2010
Antidote final tle32101192%2 e1
Antidote final tle32101192%2 e1
Ayadi weglein-2013
Ayadi weglein-2013
An Extension of Linear Inverse Scattering Methods for Absorptive Media to the...
An Extension of Linear Inverse Scattering Methods for Absorptive Media to the...
Inverse scattering series for multiple attenuation: An example with surface a...
Inverse scattering series for multiple attenuation: An example with surface a...
Araujo etal-1994b
Araujo etal-1994b
Verschuur etal-1999
Verschuur etal-1999
Internal multiple attenuation using inverse scattering: Results from prestack...
Internal multiple attenuation using inverse scattering: Results from prestack...
Wavelet estimation for a multidimensional acoustic or elastic earth- Arthur W...
Wavelet estimation for a multidimensional acoustic or elastic earth- Arthur W...
Hsu etal-2009
Hsu etal-2009
Robustnesosf a New Source-Signature Estimation Method Under Realistic Data Co...
Robustnesosf a New Source-Signature Estimation Method Under Realistic Data Co...
Examples of a Nonlinear Inversion Method Based on the T Matrix of ScatteringT...
Examples of a Nonlinear Inversion Method Based on the T Matrix of ScatteringT...
Chang etal 2012a
Chang etal 2012a
Inverse scattering series for multiple attenuation: An example with surface a...
Inverse scattering series for multiple attenuation: An example with surface a...
Green's Theorem Deghostin Algorthm- Dr. Arthur B. Weglein
Green's Theorem Deghostin Algorthm- Dr. Arthur B. Weglein
Dernier
Porella
Porella : features, morphology, anatomy, reproduction etc.
Porella : features, morphology, anatomy, reproduction etc.
Silpa
Human genetics
Human genetics..........................pptx
Human genetics..........................pptx
Silpa
world science day peace and development
300003-World Science Day For Peace And Development.pptx
300003-World Science Day For Peace And Development.pptx
ryanrooker
Leuser virus
development of diagnostic enzyme assay to detect leuser virus
development of diagnostic enzyme assay to detect leuser virus
NazaninKarimi6
biology HL practice questions IB BIOLOGY
biology HL practice questions IB BIOLOGY
1301aanya
www.seribangash.com The Mariana Trench is one of the most remarkable geological features on Earth. Here are some details about it: Location: The Mariana Trench is located in the western Pacific Ocean, east of the Mariana Islands. It stretches for about 2,550 kilometers (1,580 miles) and is known as the deepest part of the world's oceans. Depth: The trench reaches incredible depths, with its deepest point known as the Challenger Deep, which plunges down to approximately 10,984 meters (36,037 feet) below sea level. To put this into perspective, if Mount Everest, the tallest mountain on Earth, were placed at the bottom of the Challenger Deep, its peak would still be over 2 kilometers (1.25 miles) underwater. Formation: The Mariana Trench was formed by the subduction of the Pacific Plate beneath the Mariana Plate. This process creates a deep trench as the heavier Pacific Plate is forced beneath the lighter Mariana Plate. Geological Features: The trench is characterized by steep, V-shaped valleys, and its walls are composed of highly compressed sedimentary rock. At the bottom of the trench, there are also large amounts of marine sediment. Pressure: The pressure at the bottom of the Mariana Trench is immense, reaching over 1,000 times the pressure at the surface. This extreme pressure creates a challenging environment for exploration and makes it difficult for organisms to survive. Exploration: Despite its extreme conditions, the Mariana Trench has been the subject of numerous scientific expeditions and explorations. One of the most famous explorations was the dive to the Challenger Deep by Swiss scientist Jacques Piccard and U.S. Navy Lieutenant Don Walsh in 1960. More recently, in 2012, filmmaker James Cameron made a solo dive to the bottom of the Challenger Deep in the Deepsea Challenger submersible. Biological Discoveries: Despite the harsh conditions, the Mariana Trench is home to a surprising variety of life forms, including unique species of deep-sea fish, crustaceans, and microbial life. Some organisms have adapted to survive in the extreme pressure and darkness of the trench. Environmental Importance: Studying the Mariana Trench provides valuable insights into the geology, biology, and oceanography of the deep sea. It also helps scientists better understand the processes that shape the Earth's crust and the distribution of life in the oceans. Conservation: Due to its remote location and extreme depths, the Mariana Trench has remained relatively untouched by human activity. However, there is growing concern about the potential impacts of deep-sea mining and pollution on this fragile ecosystem, highlighting the need for conservation efforts to protect this unique environment. https://seribangash.com/barber-shop-business-complete-guide-for-beginners/ https://seribangash.com/legend-virat-kohli-in-cricket-history/
The Mariana Trench remarkable geological features on Earth.pptx
The Mariana Trench remarkable geological features on Earth.pptx
seri bangash
Lunularia
LUNULARIA -features, morphology, anatomy ,reproduction etc.
LUNULARIA -features, morphology, anatomy ,reproduction etc.
Silpa
By:- Sumit Kumar yadav
Chemistry 5th semester paper 1st Notes.pdf
Chemistry 5th semester paper 1st Notes.pdf
Sumit Kumar yadav
Basic concept of organic chemistry
GBSN - Biochemistry (Unit 2) Basic concept of organic chemistry
GBSN - Biochemistry (Unit 2) Basic concept of organic chemistry
Areesha Ahmad
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Bhiwandi Bhiwandi ❤CALL GIRL 7870993772 ❤CALL GIRLS ESCORT SERVICE In Bhiwan...
Monika Rani
Pogonatum
POGONATUM : morphology, anatomy, reproduction etc.
POGONATUM : morphology, anatomy, reproduction etc.
Silpa
Cytogenetic map
CYTOGENETIC MAP................ ppt.pptx
CYTOGENETIC MAP................ ppt.pptx
Silpa
Theoretical predictions and observational data indicate a class of sub-Neptune exoplanets may have water-rich interiors covered by hydrogen-dominated atmospheres. Provided suitable climate conditions, such planets could host surface liquid oceans. Motivated by recent JWST observations of K2-18 b, we self-consistently model the photochemistry and potential detectability of biogenic sulfur gases in the atmospheres of temperate sub-Neptune waterworlds for the first time. On Earth today, organic sulfur compounds produced by marine biota are rapidly destroyed by photochemical processes before they can accumulate to significant levels. Domagal-Goldman et al. suggest that detectable biogenic sulfur signatures could emerge in Archean-like atmospheres with higher biological production or low UV flux. In this study, we explore biogenic sulfur across a wide range of biological fluxes and stellar UV environments. Critically, the main photochemical sinks are absent on the nightside of tidally locked planets. To address this, we further perform experiments with a 3D general circulation model and a 2D photochemical model (VULCAN 2D) to simulate the global distribution of biogenic gases to investigate their terminator concentrations as seen via transmission spectroscopy. Our models indicate that biogenic sulfur gases can rise to potentially detectable levels on hydrogen-rich water worlds, but only for enhanced global biosulfur flux (20 times modern Earth’s flux). We find that it is challenging to identify DMS at 3.4 μm where it strongly overlaps with CH4, whereas it is more plausible to detect DMS and companion byproducts, ethylene (C2H4) and ethane (C2H6), in the mid-infrared between 9 and 13 μm. Unified Astronomy Thesaurus concepts: Exoplanet atmospheres (487); Exoplanet
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Sérgio Sacani
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kantirani197
Role of mutant in seeding development
Use of mutants in understanding seedling development.pptx
Use of mutants in understanding seedling development.pptx
RenuJangid3
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Grade 9 module
module for grade 9 for distance learning
module for grade 9 for distance learning
levieagacer
The material is prepared for interested students & faculty in the areas of human & veterinary physiology of respiration
Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....
Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....
muralinath2
Module for Grade 9
Module for Grade 9 for Asynchronous/Distance learning
Module for Grade 9 for Asynchronous/Distance learning
levieagacer
dental
Digital Dentistry.Digital Dentistryvv.pptx
Digital Dentistry.Digital Dentistryvv.pptx
MohamedFarag457087
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(20)
Porella : features, morphology, anatomy, reproduction etc.
Porella : features, morphology, anatomy, reproduction etc.
Human genetics..........................pptx
Human genetics..........................pptx
300003-World Science Day For Peace And Development.pptx
300003-World Science Day For Peace And Development.pptx
development of diagnostic enzyme assay to detect leuser virus
development of diagnostic enzyme assay to detect leuser virus
biology HL practice questions IB BIOLOGY
biology HL practice questions IB BIOLOGY
The Mariana Trench remarkable geological features on Earth.pptx
The Mariana Trench remarkable geological features on Earth.pptx
LUNULARIA -features, morphology, anatomy ,reproduction etc.
LUNULARIA -features, morphology, anatomy ,reproduction etc.
Chemistry 5th semester paper 1st Notes.pdf
Chemistry 5th semester paper 1st Notes.pdf
GBSN - Biochemistry (Unit 2) Basic concept of organic chemistry
GBSN - Biochemistry (Unit 2) Basic concept of organic chemistry
Bhiwandi Bhiwandi ❤CALL GIRL 7870993772 ❤CALL GIRLS ESCORT SERVICE In Bhiwan...
Bhiwandi Bhiwandi ❤CALL GIRL 7870993772 ❤CALL GIRLS ESCORT SERVICE In Bhiwan...
POGONATUM : morphology, anatomy, reproduction etc.
POGONATUM : morphology, anatomy, reproduction etc.
CYTOGENETIC MAP................ ppt.pptx
CYTOGENETIC MAP................ ppt.pptx
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Gwalior ❤CALL GIRL 84099*07087 ❤CALL GIRLS IN Gwalior ESCORT SERVICE❤CALL GIRL
Gwalior ❤CALL GIRL 84099*07087 ❤CALL GIRLS IN Gwalior ESCORT SERVICE❤CALL GIRL
Use of mutants in understanding seedling development.pptx
Use of mutants in understanding seedling development.pptx
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
module for grade 9 for distance learning
module for grade 9 for distance learning
Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....
Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....
Module for Grade 9 for Asynchronous/Distance learning
Module for Grade 9 for Asynchronous/Distance learning
Digital Dentistry.Digital Dentistryvv.pptx
Digital Dentistry.Digital Dentistryvv.pptx
