The geologist Domenico Lovisato and the hydrologist Giovanni Roncagli made up the scientific party. A practitioner of hydrology is called a hydrologist. It is about Dr Spiros Trotter, aka Spike from "The Watertower", who is a hydrologist. Malin Fredrika Sofia Sundberg-Falkenmark, born 21 November 1925 in Stockholm, is a Swedish hydrologist. This data was analyzed by a statistical hydrologist in 2014. According to Lancaster University he is the most highly cited hydrologist. The measurements were first used by L.C. Vincent, a French hydrologist, in the early 1900s. Michael worked as a hydrologist in the north of Israel (for 25 years). Working for the government as a hydrologist, he travelled widely across the Top End. Xiafen "Sherry" Chen, 59, was a hydrologist for the federal government in Ohio. Stephen Birkinshaw (born 1968) is an English fell runner and hydrologist.