全球沿海河流和环境变量¶。
一个包含5399条沿海河流和8个环境变量数据的全球数据集。在这些河流中，40%（n=2174）有地貌三角洲，其定义是突出于区域海岸线、分布的河道网络，或两者兼有。在全球范围内，平均每300公里的海岸线就有一个三角洲，但也有三角洲形成的热点，例如在东南亚，每100公里的海岸线就有一个三角洲。我们的分析表明，一条河流形成三角洲的可能性随着排水量、沉积物排放量和排水流域面积的增加而增加。另一方面，三角洲的可能性随着波高和潮汐范围的增加而减少。三角洲的可能性与受水盆地的坡度有着非单调的关系：坡度越大，三角洲的可能性就越小，但对于坡度大于0.006的情况，三角洲的可能性就会增加。这反映了在主动和被动边缘上对三角洲形成的不同控制。
代码
var global_costal_rivers = ee.FeatureCollection("projects/sat-io/open-datasets/delta/global-costal-rivers-points");
function buffer_collection(ft) {
var buffered = ft.buffer(2000);//buffer distance in meter
return buffered;
}
print(global_costal_rivers.size());
print(global_costal_rivers.first())
Map.addLayer(
ee.FeatureCollection(global_costal_rivers.map(buffer_collection)).style({
fillColor: '00000000', // transparent
color: '#191919',
}),{},'Global coastal rivers and environmental variables'
);
Citation¶
Caldwell, R. L., Edmonds, D. A., Baumgardner, S., Paola, C., Roy, S., and Nienhuis, J. H.: A global delta dataset and the environmental variables that predict delta formation on marine coastlines, Earth Surf. Dynam., 7, 773–787, https://doi.org/10.5194/esurf-7-773-2019, 2019.
Additional information
Property Match from Supplement
| Properties | Reference Property |
|---|---|
| ID | ID |
| DL_Binary | Delta Presence or Absence |
| Region | Region |
| Latitude | RM_Lat |
| Longitude | RM_Lon |
| MF_matches | M&F_matches |
| MF_IDs | M&F_ID(s) |
| WV_HT_Hw_m | Wave_Height_Hw (m) |
| WV_HT_m | Tidal_Range_Ht (m) |
| Bslope_RM | Bathymetric_Slope_from_RM_Sbr |
| SLC_mm | Sea_Level_Change (mm yr^-1) |
Region Code and Description Tables
| Region Code | Region Description |
|---|---|
| AFR | mainland Africa |
| AUS | Australia, New Zealand, New Guinea |
| BLS | Black Sea, Sea of Azov |
| CAM | Central America |
| EAS | East Asia |
| EUR | Europe |
| MAD | Madagascar |
| MED | Mediterranean |
| MID | Middle East |
| NAM | North America |
| RUS | Russia |
| SAM | South America |
| SAS | South Asia |
| SEA | Southeast Asia |
License¶
Shared License: This work is licensed under a Creative Commons Attribution 4.0 International License. You are free to copy and redistribute the material in any medium or format, and to transform and build upon the material for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made.
Curated by: Samapriya Roy
Keywords: :"Fluvial Geomorphology, Hydrology, Rivers, Coastal Rivers, Tidal, River Mouth"
Last updated: 2021-04-17