Shallow geological structures building by joint waveform inversion based on curvelet decomposition
نویسندگان
چکیده
Abstract Shallow geological imaging structures often play an essential role in the field of environmental and engineering geophysics. Early arrival waveform inversion (EWI) is high-resolution method to near-surface structures. We proposed a joint envelope based on curvelet transform (CJWEI) build shallow By taking advantage their complementary sensitivities structure, we can constrain both low- high-wavenumber components structures, as well mitigating cycle-skipping problem. Curvelet was used decompose seismic data into different scales provide multi-scale strategy further reduce non-uniqueness inversion. With synthetic test, demonstrate that our anomalies hidden layers structure more efficiently robust terms noise.
منابع مشابه
the role of task-based techniques on the acquisition of english language structures by the intermediate efl students
this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...
15 صفحه اولThree-dimensional inversion of magnetotelluric data in complex geological structures
Int erp retation of magneto telluri c data over inhomogeneous geolog ical st ructures is st ill a challenging problem in geophysical exploration. We have developed a new 3-D MT inversion method and a computer code based on full nonlinear conjugate gradient inversion and quasi analyt ical approximation for forward modeling solut ion. Appli cat ion of the QA approximation to forward model ing a...
متن کاملLinearized Extended Waveform Inversion
The extended model concept links migration velocity analysis and waveform inversion. This abstract presents a method to solve a partially linearized version of the full waveform inversion problem with model extension. Linearization separates the model of the earth into the smooth long scale background model and the short scale model. Extended waveform inversion allows the short scale model to d...
متن کاملFull-waveform inversion on heterogeneous HPC systems
We present a spectral-element implementation of full seismic waveform inversion for large heterogeneous HPC systems. In this we address the optimal parallelisation configurations of individual simulations, the large I/O requirements of adjoint simulations, and the scheduling of large numbers of forward and adjoint solves, typical for realistic inversions. Using GPU accelerators allows us to ach...
متن کاملInteractive inversion in geological applications
We compare IGA to traditional numerical inversion on a geological application. We show that ‘a priori’ information and expert knowledge can overcome lack of accurate data and help convergence towards a satisfactory solution.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOP conference series
سال: 2022
ISSN: ['1757-899X', '1757-8981']
DOI: https://doi.org/10.1088/1755-1315/1087/1/012058