The estimation performance of the proposed methods finally was analyzed with field data previously utilized by Cooper et al. (1967). In these test data, 7.6 cm of well and casing radius was used to measure the slug responses of a 63-sec-long test. The initial head of the aquifer was reported as 0.336 m and the initial excess head in the well was 0.896 m. Applying TSM and AMM, T values were estimated as 4.909 and 4.738 cm2/s, respectively. Similarly, S values for TSM and AMM were 1.174 × 10−3 and 1.473 × 10−3, respectively. Table 3 summarizes the estimation results and the performance of the implemented methods used in the comparison. According to Table 3, the estimation capability of the proposed TSM and AMM is as high as the available techniques in the literature.
Real field data analysis
. | Aquifer parameters . | Drawdown comparision . | ||||
---|---|---|---|---|---|---|
Method . | T (cm2/s) . | S . | R2 . | RMSE . | SI . | MAE . |
Proposed TSM (η1 = 0.5, η2 = 0.25) | 4.9090 | 1.1740 × 10−3 | 0.9990 | 0.0091 | 0.0266 | 0.0071 |
Proposed AMM (η1 = 0.5, η2 = 0.25) | 4.7380 | 1.4730 × 10−3 | 0.9990 | 0.0095 | 0.0279 | 0.0077 |
Cooper et al. (1967), curve match | 5.3000 | 1.0000 × 10−3 | 0.9983 | 0.0116 | 0.0355 | 0.0098 |
Batu (1998), curve match | 5.2500 | 1.0000 × 10−3 | 0.9984 | 0.0101 | 0.0305 | 0.0082 |
Singh (2007) | 7.9890 | 1.0000 × 10−5 | 0.9991 | 0.0190 | 0.0561 | 0.0136 |
Peres et al. (1989), semilog | 4.8000 |
. | Aquifer parameters . | Drawdown comparision . | ||||
---|---|---|---|---|---|---|
Method . | T (cm2/s) . | S . | R2 . | RMSE . | SI . | MAE . |
Proposed TSM (η1 = 0.5, η2 = 0.25) | 4.9090 | 1.1740 × 10−3 | 0.9990 | 0.0091 | 0.0266 | 0.0071 |
Proposed AMM (η1 = 0.5, η2 = 0.25) | 4.7380 | 1.4730 × 10−3 | 0.9990 | 0.0095 | 0.0279 | 0.0077 |
Cooper et al. (1967), curve match | 5.3000 | 1.0000 × 10−3 | 0.9983 | 0.0116 | 0.0355 | 0.0098 |
Batu (1998), curve match | 5.2500 | 1.0000 × 10−3 | 0.9984 | 0.0101 | 0.0305 | 0.0082 |
Singh (2007) | 7.9890 | 1.0000 × 10−5 | 0.9991 | 0.0190 | 0.0561 | 0.0136 |
Peres et al. (1989), semilog | 4.8000 |