Rekonstruktion der Form von Graeben fuer Archaeologische Magnetische Prospektion (bibtex)

by Alois Eder-Hinterleitner

Abstract:

Magnetic prospection is a very important instrument for preparing an archeological excavation. Apart from this, it enables new information, which can mostly not be obtained by the excavation, because a prospection can cover, in contrast to an excavation, the whole site. To get quantitative information about the subsurface of the earth, it is necessary to determine the shape of the objects producing the magnetic anomalies. In this diploma theses we try to reconstruct the shape of filled ditches. First we describe the measuring method and the image preprocessing steps to visualize the data. Then a magnetic model for filled ditches is presented, which allows the determination of the shape of the ditch by estimating the depth of the humus-like soil at the measuring points. The reconstruction of the depth is done by the Least-Square-Method using a simulated annealing schedule. To get archeologically plausible ditches a regularization of the depth is needed. The Least-Square terms are weighted to make the algorithm more robust. The weights are calculated by using all the information about the measuring procedure. At last the goals of the diploma theses are presented.

Reference:

Rekonstruktion der Form von Graeben fuer Archaeologische Magnetische Prospektion (Alois Eder-Hinterleitner), Technical report, PRIP, TU Wien, 1993.

Bibtex Entry:

@TechReport{TR016, author = "{A}lois {E}der-{H}interleitner", institution = "PRIP, TU Wien", number = "PRIP-TR-016", title = "{R}ekonstruktion der {F}orm von {G}raeben fuer {A}rchaeologische {M}agnetische {P}rospektion", year = "1993", url = "ftp://ftp.prip.tuwien.ac.at/pub/publications/trs/tr16.pdf", abstract = "Magnetic prospection is a very important instrument for preparing an archeological excavation. Apart from this, it enables new information, which can mostly not be obtained by the excavation, because a prospection can cover, in contrast to an excavation, the whole site. To get quantitative information about the subsurface of the earth, it is necessary to determine the shape of the objects producing the magnetic anomalies. In this diploma theses we try to reconstruct the shape of filled ditches. First we describe the measuring method and the image preprocessing steps to visualize the data. Then a magnetic model for filled ditches is presented, which allows the determination of the shape of the ditch by estimating the depth of the humus-like soil at the measuring points. The reconstruction of the depth is done by the Least-Square-Method using a simulated annealing schedule. To get archeologically plausible ditches a regularization of the depth is needed. The Least-Square terms are weighted to make the algorithm more robust. The weights are calculated by using all the information about the measuring procedure. At last the goals of the diploma theses are presented.", }

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