クリギング法を用いた歪場の推定の試み
スポンサーリンク
概要
- 論文の詳細を見る
A feasibility test of a kriging method is conducted for estimate of a strain field. In this test the kriging method is applied to man-made data and actual ground displacement data observed in Taiwan. It is investigated how well the method can reproduce the given strain field and extract the complex strain field of Taiwan. To clarify the merits/demerits of this method, we compare the results of the kriging to those inferred from other analysis methods; one is a conventional method in which a strain is directly calculated using a triangulation network and the other is a method incorporating a spatial smoothing procedure. The results demonstrate that the kriging method enables us to provide a largescale strain field spatially smoothly, and further to simultaneously extract a localized deformation. Additionally it is noteworthy that this method is robust for anomalous data, i.e., weights of anomalies are suppressed automatically. On the other hand, the standard triangulation method cannot stably extract a large-scale strain field and at a certain case artificial strain errors are produced. This method is very sensitive to anomalous data and/or even to small fluctuations (errors) of data. The method incorporating a spatial smoothing procedure that has been developed and applied in many recent studies can robustly evaluate strain components that are spatially dominant in the analyzed domain, but miss out a small-scale deformation due to the smoothing.
- 北海道大学大学院理学研究院自然史科学部門（地球物理学） = Department of Natural History Sciences (Geophysics), Graduate School of Science, Hokkaido Universityの論文
北海道大学大学院理学研究院自然史科学部門（地球物理学） = Department of Natural History Sciences (Geophysics), Graduate School of Science, Hokkaido University | 論文
- 北海道えりも沖における海底地震観測から得られた地震活動
- 上杵臼ひずみ高精度記録からの鋸歯状成分の除去について
- 有珠火山東麓におけるMT法電磁探査
- 有珠2000年新山域の比抵抗構造
- 地熱地域における1m深地温と75cm深平均地温勾配との関係