TY  - JOUR
TT  - PARKER–OLDENBURG YÖNTEMİ İLE GRAVİTE VERİLERİNİN DÜZ VE TERS MODELLEMESİ (YOĞUNLUK ARAYÜZEYİNİN SAPTANMASI)
AU  - Sarı, Coşkun
AU  - Akyol, Ali Levent
PY  - 2002
DA  - January
JF  - Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi
JO  - DEUFMD
PB  - Dokuz Eylül Üniversitesi
WT  - DergiPark
SN  - 1302-9304
SP  - 37
EP  - 51
VL  - 4
IS  - 1
KW  - Gravity
KW  - Inversion
KW  - Iterative scheme
KW  - Density interface
KW  - Fourier transform
N2  - through the rearrangement of the formula used for the rapid calculation of such anomaly caused by a two  dimensional uneven layer of material. The scheme calculates the Fourier transform of the gravitational anomaly  as the sum of Fourier transforms of powers of the perturbing topography. This method is computationally much  more efficient than calculating the gravitational field by breaking up the model into a set of prisms whose  contributions are calculated separately and summed. Essentially this method comprises of computations  involving Fourier transformations, which are relatively fast and straightforward with the FFT algorithm. Its  speed makes the method to be presented as a practical one. The effects of the two parameters, the density  contrast (ρ) and the level at which the inversion is made (zo) are observed, cause the nonuniqueness of the  inversion. Without additional information constraining these parameters, the ambiguity in the gravity  interpretation can not be reduced. Convergence of the inversion is ensured by a suitable low pass filter in  frequency domain. However, if the assumed density was too small or reference level too large, no topography  could be found which would give rise to an observed anomaly. The ability of this inversion scheme to handle  large numbers of model points without greatly decreasing the numerical stability or greatly increasing the  computation time makes it particularly attractive
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UR  - http://dergipark.org.tr/tr/pub/deumffmd/issue//493686
L1  - http://dergipark.org.tr/tr/download/article-file/590931
ER  -