Evaluating agricultural drought using satellite-based soil moisture estimations in Central Nebraska | |
| Author | Phyu Phyu Kywe |
| Call Number | AIT Thesis no.WM-23-16 |
| Subject(s) | Droughts--Environmental aspects--Nebraska Soil moisture--Remote sensing--Nebraska |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | This thesis explores soil moisture dynamics from April to August (2003-2010) using satellite imagery and the TVDI method. It reveals that the highest soil moisture was estimated during April in 2008 and 2010 respectively. In this study, an intriguing observation, on May 20th in both 2007 and 2009, the soil moisture exhibited an unusual state of being both dry and wet at the same time. This phenomenon is probably due to swift changes in weather patterns and the impact of various environmental factors. Implications from this analysis can be useful for agriculture, hydrology, and environmental monitoring. The SWDI analysis of drought in central Nebraska from April to August (2003-2010) identifies soil moisture variations, impacting agriculture and water resource management, particularly focusing on irrigated crops. The study used TVDI and SWDI to assess soil moisture, temperature-vegetation-moisture relationships, and implications for surface and groundwater resources, aiding water management and agriculture. Analyzing Soil Water Deficit Index (SWDI) data from 2003-2010 revealed severe drought conditions in northern, eastern, southeastern, and southern areas, with milder conditions in the west and central regions. Extreme drought in the middle area threatened irrigated crops. Rain fed crop-dependent areas faced food and economic challenges, underscoring the importance of drought preparedness. The analysis of central Nebraska's drought conditions reveals varying impacts on surface and groundwater resources, with implications for water management and agriculture. SWDI-based assessment characterizes agricultural drought, providing insights into its effects on land use and human-environment interactions. This research advances understanding, benefiting water resource management and agriculture. Ongoing technological advancements enhance monitoring and sustainable practices. |
| Year | 2023 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Shanmugam, Mohana Sundaram |
| Examination Committee(s) | Shrestha, Sangam;Ho Huu Loc;Sarawut Ninsawat |
| Scholarship Donor(s) | Asian Institute of Technology Scholarships |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2023 |