Hydrology II
kärtchen für hydro II
kärtchen für hydro II
58
0.0 (0)
Invisible
Invisible
Set of flashcards Details
| Flashcards | 58 |
|---|---|
| Language | English |
| Category | Nature Studies |
| Level | Primary School |
| Created / Updated | 15.10.2013 / 16.01.2017 |
| Licencing | Attribution-ShareAlike (CC BY-SA) (Voegeli Christian, ETHZ) |
| Weblink |
https://card2brain.ch/box/hydrology_ii
|
| Embed |
<iframe src="https://card2brain.ch/box/hydrology_ii/embed" width="780" height="150" scrolling="no" frameborder="0"></iframe>
|
how to monitor?
traditional: point measurements
- loss of information with respect to space variability
advanced: distributed in time and space
- remote sensing
how to monitor?
- traditional: point measurements
- loss of information with respect to spacial (and temporal) variability
- advanced: measurements distributed in time and space
- remote sensing
measurements are possible for:
- rainfall
- soil moisture
- vegetation cover
- land use
- thematic maps
problems of measurements by remote sensing:
low penetration of the ground: ca 5-10 cm
what does radar mean?
RAdio Detecting And Ranging
how does a weather radar work?
- emission and reception of el mag waves
- backscattering from objects
- reflectivity (Z)
- Z is dependent on Drop Seize Distribution (DSD)
- Z is converted to precipitation depth
why monitoring?
- to avoid inaccurate forecasting (due to inaccurate data base)
- understand processes
- build models
- verify modeling results
advanced methods in hydrology can....
- reproduce nature's behavior
- maximise the efficiency of planning
- minimise the risk of failure
- analyse interaction with other systems
