Glaciers in West Spitsbergen often surge forward, with the Negri Glacier moving the fastest at -12 km in less than a year. The Finsterwalder Glacier occasionally surges to balance its slow movement. Surges are common in Spitsbergen, with well-documented cases like the Recherche Glacier advancing in 1839 and the Fridtjov Glacier surging in 1861. The Savstrom Glacier also surged across a fjord in 1882. The Wahlenberg Glacier advanced 6 km in 1908, and the Von Post Glacier surged in 1924, compressing its eastern arm.