Abstract
A new approach for the modified method of innovative trend analysis (ITA) was applied to the categories of maximum daily rains coming from 41 pluviometric stations of Macta (northwest Algeria) for the period 1970–2010. Six categories of maximum daily rainfall were considered: light: 0–4 mm/day (A); mild to moderate: 4–16 mm/day (B); moderate to heavy: 16–32 mm/day (C1); heavy: 32–64 mm/day (C2); heavy to torrential: 64–128 mm/day (D1); and torrential: equal to or greater than 128 mm/day (D2). The results show that during the second period (1990–2010), increasing trends were detected in the middle categories B (most frequent: 20.78%), C1 (17.85%), C2 (20.21%) and D1 (4.92%). In addition, migratory movements and rainy events towards the higher categories were detected (in particular towards C1 (8.84%)). These results show an increase in extreme rains in the Macta watershed during the period 1990–2010.
| Original language | English |
|---|---|
| Pages (from-to) | 2298-2311 |
| Number of pages | 14 |
| Journal | Hydrological Sciences Journal |
| Volume | 66 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2021 |
Bibliographical note
Publisher Copyright:© 2021 IAHS.
Funding
The authors thank the National Water Resources Agency (ANRH) for making the data available. The authors thank Prof. Zohair Chentouf (King Saud University, KSA) for his linguistic advice. We extend our gratitude to Prof. Laborde J. for his free Hydrolab software, which was used for data analysis.
| Funders | Funder number |
|---|---|
| ANRH | |
| National Water Resources Agency | |
| King Saud University |
Keywords
- Macta-Algeria
- extreme rain
- migration movements
- modified ITA
- trends
