Bathymetry Estimation Using the Gravity-Geologic Method: An Investigation of Density Contrast Predicted by the Downward Continuation Method
| Autor: | Yu-Shen Hsiao, Jeong Woo Kim, Kwang Bae Kim, Bang Yong Lee, Cheinway Hwang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Terrestrial, Atmospheric and Oceanic Sciences, Vol 22, Iss 3, p 347 (2011) |
| Druh dokumentu: | article |
| ISSN: | 1017-0839 2311-7680 |
| DOI: | 10.3319/TAO.2010.10.13.01(Oc) |
| Popis: | The downward continuation (DWC) method was used to determine the density contrast between the seawater and the ocean bottom topographic mass to estimate accurate bathymetry using the gravity-geologic method (GGM) in two study areas, which are located south of Greenland (Test Area #1: 40 - 50¢XW and 50 - 60¢XN) and south of Alaska (Test Area #2: 140 - 150¢XW and 45 - 55¢XN). The data used in this study include altimetry-derived gravity anomalies, shipborne depths and gravity anomalies. Density contrasts of 1.47 and 1.30 g cm-3 were estimated by DWC for the two test areas. The considerations of predicted density contrasts can enhance the accuracy of 3 ~ 4 m for GGM. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|