Öz
This study suggests a new edge-detection filter, called enhanced total horizontal derivative of the tilt angle (ETHDR). ETHDR is the total horizontal derivative of the ratio of the vertical derivative to the total horizontal derivative of the first order analytical signal amplitude. This paper compares the results of ETHDR and other normalized derivative filters. The feasibility and capability of the ETHDR method is demonstrated using a theoretical data and a real magnetic dataset. Compared with the other derivative based filters, the ETHDR produces more detailed results for deeper magnetized structures and gives sharp response over edges of sources
Anahtar Kelimeler
Kaynakça
- Baranov, V., 1957. A new method for interpre- tation of aeromagnetic maps, Pseudo- gravimetric anomalies. Geophysics, 22, 359–383.
- Baranov,V., and H. Naudy, 1964. Numerical calculation of the formula of reduction to the magnetic pole. Geophysics, 29, 67–79.
- Cooper, G.R.J., 2009. Balancing images of po- tential-field data. Geophysics, 74(3), L17-L20.
- Cooper, G.R.J., and Cowan, D.R., 2006. En- hancing potential field data using filters based on the local phase. Computers & Geosciences, 32(10), 1585-1591.
- Cooper, G.R.J., and Cowan, D.R., 2008. Edge enhancement of potential-field data using normalized statistics. Geoph- ysics, 73(3), H1-H4.
- Cordell, L., and V.J.S. Grauch, 1985. Mapping basement magnetization zones from aeromagnetic data in the San Juan ba- sin, New Mexico, in W. J. Hinze, ed.,
- The utility of regional gravity and mag
- netic anomaly maps: SEG, 181-197.
- Koçyiğit, A., 2000. Seismicity of the southwestern part of Turkey. BADSEM 2000-Sympo- sium on Seismicity of the Southwestern part of Turkey, İzmir, 30-39.
- Li, X., 2006. Understanding 3D analytic signal amplitude. Geophysics, 71(2), B13-B16.
- Miller, H.G., and Singh, V., 1994. Potential field tilt__a new concept for location of po- tential filed sources. Journal of Applied Geophysics, 32, 213-217.
- Özsayın, E., and Dirik, K., 2007. Quaternary activity of the Cihanbeyli and Yenice- oba Fault zones: İnönü-Eskişehir fault system, central Anotalia. Turkish Jour- nal of Earth Sciences. 16, 471-492.
- Pilkington, M., and Keating, P., 2004. Contact mapping from gridded magnetic data – a comparison of techniques, Explorati- on Geophysics, 35, 206-311.
- Roest, W.R., Verhoef, J., and Pilkington, M.,
- 19 Magnetic interpretation using the
- 3-D analytic signal. Geophysics, 57(1), 116-125.
- Verduzco, B., Fairhead, J.D., Green, C.M., and MacKenzie, C., 2004. New insights into magnetic derivatives for structural map- ping. The Leading Edge, 23(2), 116-119.
- Wijns, C., Perez, C., and Kowalczyk, P., 2005.
- Theta map: edge detection in magnetic
- data. Geophysics, 70(4), L39-L43.
Öz
Bu çalışmada, geliştirilmiş eğim açısı toplam yatay türevi (ETHDR) olarak anılan yeni bir kenar belirleme süzgeci önerilmiştir. ETHDR düşey türevin analitik sinyal genliğinin toplam yatay türevine oranının toplam yatay türevi olarak verilmektedir. Bu çalışmada, ETHDR yöntemi ile diğer türev tabanlı süzgeçlerin sonuçları karşılaştırılmıştır. ETHDR yönteminin uygulanabilirlik ve yetenekleri sentetik ve gerçek arazi verisi üzerinde sınanmıştır. Diğer türev tabanlı süzgeçlerle karşılaştırıldığı zaman ETHDR yönteminin derin mıknatıslanmış yapılar için daha detaylı sonuçlar ürettiği ve kaynak yapılar üzerinde keskin bir cevap verdiği görülmüştür
Anahtar Kelimeler
Kaynakça
- Baranov, V., 1957. A new method for interpre- tation of aeromagnetic maps, Pseudo- gravimetric anomalies. Geophysics, 22, 359–383.
- Baranov,V., and H. Naudy, 1964. Numerical calculation of the formula of reduction to the magnetic pole. Geophysics, 29, 67–79.
- Cooper, G.R.J., 2009. Balancing images of po- tential-field data. Geophysics, 74(3), L17-L20.
- Cooper, G.R.J., and Cowan, D.R., 2006. En- hancing potential field data using filters based on the local phase. Computers & Geosciences, 32(10), 1585-1591.
- Cooper, G.R.J., and Cowan, D.R., 2008. Edge enhancement of potential-field data using normalized statistics. Geoph- ysics, 73(3), H1-H4.
- Cordell, L., and V.J.S. Grauch, 1985. Mapping basement magnetization zones from aeromagnetic data in the San Juan ba- sin, New Mexico, in W. J. Hinze, ed.,
- The utility of regional gravity and mag
- netic anomaly maps: SEG, 181-197.
- Koçyiğit, A., 2000. Seismicity of the southwestern part of Turkey. BADSEM 2000-Sympo- sium on Seismicity of the Southwestern part of Turkey, İzmir, 30-39.
- Li, X., 2006. Understanding 3D analytic signal amplitude. Geophysics, 71(2), B13-B16.
- Miller, H.G., and Singh, V., 1994. Potential field tilt__a new concept for location of po- tential filed sources. Journal of Applied Geophysics, 32, 213-217.
- Özsayın, E., and Dirik, K., 2007. Quaternary activity of the Cihanbeyli and Yenice- oba Fault zones: İnönü-Eskişehir fault system, central Anotalia. Turkish Jour- nal of Earth Sciences. 16, 471-492.
- Pilkington, M., and Keating, P., 2004. Contact mapping from gridded magnetic data – a comparison of techniques, Explorati- on Geophysics, 35, 206-311.
- Roest, W.R., Verhoef, J., and Pilkington, M.,
- 19 Magnetic interpretation using the
- 3-D analytic signal. Geophysics, 57(1), 116-125.
- Verduzco, B., Fairhead, J.D., Green, C.M., and MacKenzie, C., 2004. New insights into magnetic derivatives for structural map- ping. The Leading Edge, 23(2), 116-119.
- Wijns, C., Perez, C., and Kowalczyk, P., 2005.
- Theta map: edge detection in magnetic
- data. Geophysics, 70(4), L39-L43.
Ayrıntılar
| Birincil Dil | Türkçe |
|---|---|
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 1 Şubat 2013 |
| Gönderilme Tarihi | 24 Mart 2015 |
| Yayımlandığı Sayı | Yıl 2013 Cilt: 34 Sayı: 1 |