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Research Article

Consecutive DInSAR and well based on the law of material conservation between land surface pressure and ground water to observe land subsidence

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Article: 2159069 | Received 30 May 2022, Accepted 09 Dec 2022, Published online: 28 Dec 2022

Figures & data

Figure 1. Study area in Kanagawa prefecture.

Figure 1. Study area in Kanagawa prefecture.

Table 1. Location data of GNSS control points used in the research (Nishi et al. Citation2021).

Table 2. Land subsidence observation wells in Yokohama city (Land subsidence Citation2022c).

Figure 2. Geology map in Kanagawa prefecture (Nishi et al. Citation2021).

Figure 2. Geology map in Kanagawa prefecture (Nishi et al. Citation2021).

Figure 3. The rainfall intensity distribution in Yokohama city from 2017 to 2019 (Precipitation Citation2022).

Figure 3. The rainfall intensity distribution in Yokohama city from 2017 to 2019 (Precipitation Citation2022).

Table 3. Sentinel-1 C band data pairs (Nishi et al. Citation2021).

Figure 4. Illustration of land subsidence. Clay layers are being compressed (Modified (Tobita et al. Citation2004)).

Figure 4. Illustration of land subsidence. Clay layers are being compressed (Modified (Tobita et al. Citation2004)).

Figure 5. Flowchart of SARPROZ processing with APS removal.

Figure 5. Flowchart of SARPROZ processing with APS removal.

Figure 6. Land surface pressure and ground water model.

Figure 6. Land surface pressure and ground water model.

Figure 7. Examples of LOS displacement images.

Figure 7. Examples of LOS displacement images.

Table 4. Subsidence rate derived from Consecutive DInSAR and GNSS data.

Table 5. Subsidence rate derived from Consecutive DInSAR and Landsubsidence data.

Figure 8. Comparison of Consecutive DInSAR results and GNSS data in three cities.

Figure 8. Comparison of Consecutive DInSAR results and GNSS data in three cities.

Figure 9. Correlation of Consecutive DInSAR results and land subsidence data (Yokohama Park).

Figure 9. Correlation of Consecutive DInSAR results and land subsidence data (Yokohama Park).

Figure 10. Examples of Consecutive DInSAR results and land subsidence data.

Figure 10. Examples of Consecutive DInSAR results and land subsidence data.