Lake Toba is located in the province of North Sumatra, Indonesia which is the largest lake in southeast Asia and is the largest volcanic-Type lake in the world. The lake's countenance level is decreased and this can have a negative impact on utilization of power plants and agricultural irrigation. This study will see whether the water level is decreased due to the influence of El Niño activity. The methods used are statistical and descriptive analysis. The data used is the water level of Lake Toba in period of 1957-2016, precipitation data uses NOAA Climate Prediction Center (CPC) data with a resolution of 0.50° × 0.50° from January 1957 to December 2013 (56 years) to analyze rainfall anomalies. El Niño's activities have an effect on Lake Toba water level, where the moderate El Niño > 12 months duration resulted in a reduction of 1.5-2 m, while the strong El Niño with a duration of > 10 months resulted in a decline of 2-2.5 m.
|Journal||IOP Conference Series: Earth and Environmental Science|
|Publication status||Published - 30 Dec 2019|
|Event||2nd International Conference on Life and Applied Sciences for Sustainable Rural Development, ICLAS-SURE 2019 - Purwokerto, Indonesia|
Duration: 20 Nov 2019 → 22 Nov 2019
- El Niño
- Lake Toba
- Water Level