https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46732 Tue 29 Nov 2022 13:12:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46606 2. In this paper, a forward model is developed to determine the increased water surface level corresponding to GRACE observations, estimated to be about 120 m. In contrast to GRACE, the TWS derived from land surface models cannot capture the increased ΔTWS, due to the lack of reservoir routing algorithms in the models. In addition, the land subsidence was calculated using the disk load model constructed based on the GRACE-derived lake level and Landsat-derived lake extent; the result is validated with the GPS data from BIN1 station, located at the western coast of Borneo. The commencement stage of the Bakun Dam induces the large-scale land subsidence, which causes the GPS-BIN1 station to subside by ~9 mm, and move toward the Bakun Lake by ~4 mm. Computation of the surface displacements directly from GRACE spherical harmonic coefficient data fails to capture the subsidence feature, mainly due to the truncation error. Overall, this study demonstrates that evaluating GRACE in conjunction with Landsat, LSMs, and GPS data allows the exploitation of the gravity signal at a much smaller spatial scale than its intrinsic resolution. Benefiting from global coverage, the newly developed satellite-based algorithm is a valuable tool for assessing the impacts of reservoir operation on hydrological and geophysical changes from local to regional scales.]]> Tue 14 May 2024 10:25:42 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43847 0.8) in the 0–5 km distance band, indicating that coastal sea-level data are useful for applications such as estimation of river plumes, long-term variation of water level in lakes and rivers, and the analysis of storm surges]]> Tue 04 Oct 2022 11:53:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40002 Tue 04 Jul 2023 16:22:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55847 Tue 02 Jul 2024 11:40:56 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:7149 Sat 24 Mar 2018 08:34:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17522 Sat 24 Mar 2018 08:03:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31073 p < 0.01, whereas inundation changes in inland wetland areas were in part driven by precipitation with r² values of 25–34% and p < 0.08. Because an up-to-date archive of Landsat imagery is globally available and LiDAR data are becoming increasingly more affordable, the developed framework can be easily implemented to generate a continuous inundation record in many regions of the globe to assist in ongoing and future studies focused on wetland hydrology and wetland management.]]> Sat 24 Mar 2018 07:25:35 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48229 Sat 11 Mar 2023 12:44:06 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44138 10 km from the coast, the noise level of 1 Hz Sentinel-3A SLAs (~1.2 cm) is lower than that of the MBP-retracked Jason-3 SLAs (~1.7 cm). Moreover, the noise level of 2 Hz Sentinel-3A SLAs is comparable to that of the 1 Hz MBP-derived Jason-3 dataset, indicating that Sentinel-3A can provide precise SLAs at finer spatial scales. The Root Mean Square Error (RMSE) of differences between the tide gauge SLA time series and the equivalent SLA time series at each along-track altimeter point was used to assess pointwise data quality. For both Sentinel-3A and MBP-retracked Jason-3, the along-track RMSEs of 20 Hz SLAs vary between 0.05 m and 0.2 m. The mean and standard deviation (STD) of 1 Hz SLA differences at crossover points were computed for each individual altimetry mission to assess overall data quality. When compared with the crossover analysis results, the quality of Sentinel-3A SLAs is superior to that of the retracked Jason-3 dataset in terms of smaller STDs at crossover points (8.8 cm vs. 10.7 cm).]]> Sat 08 Oct 2022 12:43:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43004 Fri 09 Sep 2022 14:17:21 AEST ]]>