SOME INSIGHT INTO DIRECT OBSERVATION OF HYDROLOGICAL PARAMETERS IN PEATLAND AREA OF THE SOUTH SUMATERA
Keywords:Ground Water Level, Hotspot, Peatland, Rainfall, SESAME
An integrated observation system so-called SEnsory data transmission Service Assisted by Midori Engineering laboratory (SESAME) has been deployed in the peatland area of the South Sumatera Province, Indonesia since June 2017. The system directly measures and records the groundwater level, soil moisture, skin temperature and rainfall in the peatland area. In this study, we used data recorded at four locations, two sensors located at the Peatland Hydrological Unit (PHU) of the Saleh River and the other two are located at the PHU of the Lumpur River. Data for a period of 17 June 2017 to 31 March 2018 were used to evaluate the characteristics of hydrology and climatology of the peatland in the South Sumatera. It was found that a high rainfall is associated with low skin temperature, high soil moisture, and shallow groundwater level. Furthermore, it was found that the observed groundwater level is significantly correlated with the observed rainfall. Interestingly, the adjusted groundwater level from TRMM rainfall shows a significant correlation with the number of hotspots during dry-season (July-October). Therefore, we may use the observed rainfall for peat fire early morning.