Jeoelektrik ve Jeodezik Ölçmelerle Heyelanların Zamansal İzlenmesi Üzerine Bir İnceleme
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Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Jeomorfoloji Derneği
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada, Çanakkale Onsekiz Mart Üniversitesi Terzioğlu Yerleşkesi yakınındaki bir bölgede meydana gelen aktif heyelanın incelenmesi amacıyla jeodezi ve jeofizik alanlarının ortak çalışması kapsamında arazi çalışması, veri değerlendirme ve modellemegerçekleştirilmiştir. GPS (Küresel Konum Sistemi) teknolojisinin gelişmesiyle uydulardan yayılan ve eş zamanlı olarak alıcılarda top anan kod ve faz ölçümleri y rdımıyla gerçek zamanlı olarak yüksek doğrulukta konum belirlenmenin gerçekleştiği sistemler kullanılmaktadır. Yersel ölçme yöntemlerinin aksine konumlama hızlı, etkin ve ekonomik olarak gerçekleştiğinden yer bilimleri dâhil pek çok alanda yaygın olarak kullanılmaktadır.Jeodezik GPS yöntemi ile yeryüzündeki heyelanın hareketi yüksek doğru ukla tanımlanıpjeofizik yöntemlerden elektrik özdirenç yöntemiyle de yeraltında meydana gelen değişim ve kayma yüzeyinin yüzey altı geometrisiincelenerek analiz yapılmış ve heyelanın mekanizması ve etkileri belirlenmiştir. Çalışma kapsamında iki aşamalı ölçüm alınm ştır. Ölçümlerin planlanmasında mevsimsel etkiler göz önüne alınmıştır. Ölçü mlerde “Dipole-Dipole” elektrot dizilimi kullanılmış ve heyelanın kayma doğrultusunda bir hat üzerinde ölçüm alınmıştır. Bu ölçümler programlarla desteklenerek yorumlanmıştır. Çalışma sonucunda kampanya tipi gerçekleştirilen ölçümlerden elde edilecek jeodezik ve jeofiziksel modellemelerle heyelan alanının güncel hareketinin yönü ve büyük üğünün yanısıra heyelanın kayma düzleminin konum ve tüm bu parametrelerin ilişkileri ortaya çıkarılmıştır. Yaz başında alınan elektrik özdirenç verileri kısmen yorumlandığında bölgede cm boyutunda kaymalar tespit edilmiş olup, zemin - yüzey ilişkisiyle doğrulanmıştır. Bu çalışmada kullanılan çok elektrotlu DoğruAkım Özdirenç (DAÖ) ölçümlerinin yeraltı litolojisinin tahmin edilmesinde ve kayma düzleminin yerinin tespit edilmesinde faydalı sonuçlar verebileceği sonucuna varılmıştır.
In this study, a series of field study, data evaluation and modelling had been implemented as part of a joint work of geodesy and geophysics for the purpose of examining an active landslide in an area near Çanakkale Onsekiz Mart University Terzioğlu Campus. With the advance in GPS technology, systems that give the most accurate location in real time are being used with the help of code and phase evaluation that are gathered in real time in the receivers that are spreaded from satellites. It is commonly used in multiple fields including earth sciences because the locating is fast, efficient and economic unlike the terrestrial evaluating methods. With the geodetic GPS method, landslide movement on earth had been defined with high accuracy and with one of the geophysics method electric resistivity method, underground changes and sub-surface geometry of sliding landslide had been analized by examining and mechanism and impact of landslide had been determined. Within the scope of the study, two phased evaluation had been obtained. Seasonal impacts had been considered in planning evaluations."Dipole-Dipole" electrode array had been used and measurements had been made on a line in the direction of slip of the landslide. These measurements had been interpreted with the support of the programs. As a result of the study, position of the slip plane of the landslide and the relation of all these parameters had been revealed as well as the direction and magnitude of the current movement of the landslide area with the geodetic and geophysical models obtained from the campaign type measurements. When the electric resistivity data that were obtained in the beginning of the summer were interpreted, slides in cm size had been established in the area and they had been confirmed by ground- surface relation. It was concluded that multiple electrode DCR measurements that were used in this study might have given useful results to predict undersoil lithology and to establish to the location of the sliding base.
In this study, a series of field study, data evaluation and modelling had been implemented as part of a joint work of geodesy and geophysics for the purpose of examining an active landslide in an area near Çanakkale Onsekiz Mart University Terzioğlu Campus. With the advance in GPS technology, systems that give the most accurate location in real time are being used with the help of code and phase evaluation that are gathered in real time in the receivers that are spreaded from satellites. It is commonly used in multiple fields including earth sciences because the locating is fast, efficient and economic unlike the terrestrial evaluating methods. With the geodetic GPS method, landslide movement on earth had been defined with high accuracy and with one of the geophysics method electric resistivity method, underground changes and sub-surface geometry of sliding landslide had been analized by examining and mechanism and impact of landslide had been determined. Within the scope of the study, two phased evaluation had been obtained. Seasonal impacts had been considered in planning evaluations."Dipole-Dipole" electrode array had been used and measurements had been made on a line in the direction of slip of the landslide. These measurements had been interpreted with the support of the programs. As a result of the study, position of the slip plane of the landslide and the relation of all these parameters had been revealed as well as the direction and magnitude of the current movement of the landslide area with the geodetic and geophysical models obtained from the campaign type measurements. When the electric resistivity data that were obtained in the beginning of the summer were interpreted, slides in cm size had been established in the area and they had been confirmed by ground- surface relation. It was concluded that multiple electrode DCR measurements that were used in this study might have given useful results to predict undersoil lithology and to establish to the location of the sliding base.
Açıklama
Anahtar Kelimeler
Jeoloji, Deformasyon, GPS, Modelleme, Heyelan, Özdirenç, Deformation, Landslide, Modelling, Resistivity
Kaynak
Jeomorfolojik Araştırmalar Dergisi (Online)
WoS Q Değeri
Scopus Q Değeri
Cilt
0
Sayı
2
