Figure 5

(a) Spatial distribution of suspended sediment flux during extreme El Niño events. Black bars represent historic sediment flux at each station, while red and blue bars represent sediment flux during the 1982–1983 and 1997–1998 extreme El Niño events, respectively. Each cube on the bar represents the sediment flux transported over 10 normal years. (b) Mean cumulative precipitation amount from January-April (1999–2012) without the EENE period (January-April 1998). Strong gradients are observed from East to West along the Andes. Circle size and the adjacent number indicate the sediment discharge and its percentage of annual SSY, respectively, from January-April (1999–2012). (c) Spatial precipitation patterns during the EENE period (January-April 1998). Circle size and the adjacent number indicate the sediment discharge and its percentage of annual SSY, respectively, from January-April 1998. The map was generated using ArcGIS for Desktop 9.3 (www.esri.com/software/arcgis).