Comparison of watershed morphometric parameters derived from different data sources/ (Record no. 198)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02705nam a22001817a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250320161135.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250320b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | NVSU |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Mammuad, Jeffry C. |
| 245 ## - TITLE STATEMENT | |
| Title | Comparison of watershed morphometric parameters derived from different data sources/ |
| Statement of responsibility, etc. | Jeffry C. Mammuad |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bayombong: |
| Name of publisher, distributor, etc. | Nueva Vizcaya State University, |
| Date of publication, distribution, etc. | 2020 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | xiv, 89 leaves : |
| Other physical details | illustrations (some colored), photos ; |
| Dimensions | 28 cm. |
| 500 ## - GENERAL NOTE | |
| General note | The study delineated the watershed of Nangalisan River, which is located in Villaverde, Nueva Vizcaya using different data sources. Selected watershed morphometric parameters were derived from six data sources; namely: Shuttle Radar Topography Mission (SRTM) 90-meter digital elevation model (DEM), Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) 30-meter DEM, Interferometric Synthetic Aperture Radar (IFSAR) 10-meter DEM, elevation data extracted from Google Earth using TCX Converter (GE-TCX), National Mapping and Resource Information Authority (NAMRIA) 20-meter contour interval topographic map (DMA-TOPO), and ground point elevation data survey (GPES). All three non-DEM data were transformed into DEM and thresholds, or the number of cells that define a stream, were manually iterated to more or less get similar number of streams. In general, the watershed shape, size, centroid, stream length, number of streams, stream order, and watershed relief parameters varied considerably between data. IFSAR translated into highest watershed morphometric details.<br/><br/> Root Mean Square Error (RMSE) was calculated to compare the elevation values taken with GPS with elevation values extracted from all six data sources. ASTER data had the lowest RMSE while DMA-TOPO got the highest.<br/><br/> Raster resolution appeared to have great impact on the similarity of watershed parameter outputs. It was found out that high resolution DEM yields better representation of actual condition and results are more robust for analysis. GPES appeared to be useful only for detailed topographic survey of small areas with careful attention to critical elevation points or slope breaks.<br/><br/> Use of high resolution DEM data to generate different watershed morphometric parameters appeared to be more reliable than use of conventional sources such as ground point survey and old topographic data in terms of consistency of results and level of details.<br/><br/>Keywords: Watershed, Digital Elevation Model, Morphometric Data, Nangalisan River |
| 500 ## - GENERAL NOTE | |
| General note | Thesis (Master of Science in Forestry - Forest Resource Management) |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Includes appendices and bibliographical references |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Suppress in OPAC | No |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Source of acquisition | Total checkouts | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | Nueva Vizcaya State University - Bayombong Campus | Nueva Vizcaya State University - Bayombong Campus | Graduate School Section | 03/20/2025 | Donation | T M265c 2020 | T879 | 03/20/2025 | 03/20/2025 | Thesis |
