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TitleTree rings as paleoflood and paleostage indicators
AuthorSt. George, S
SourceTree-ring reconstructions in natural hazards research: a state-of-the-art; by Stoffel, M (ed.); Bollschweiler, M (ed.); Butler, D R (ed.); Luckman, B H (ed.); Advances in Global Change Research vol. 41, 2010 p. 233-239, 22
Alt SeriesEarth Sciences Sector, Contribution Series 20090270
Mediapaper; on-line; digital
File formatpdf
Subjectsenvironmental geology; paleontology; floods; flood potential; dendrochronology; paleoecology; paleoenvironment; ecology; flood plains; health hazards; geological hazards
ProgramReducing Risk Program Management, Public Safety Geoscience
Released2010 03 12
AbstractDendrochronological methods can routinely date past floods to the year of their occurrence and, in rare cases, can estimate the timing of floods that occur during the growing season to within two weeks. This high degree of chronological control, which is surpassed only by that provided by direct observation, can be used to determine whether floods in separate watersheds were synchronous or offset by several years and test hypothesis that suppose linkages between extreme floods and specific forcing mechanisms. The wide geographic distribution of tree species with dateable rings combined with the broad suite of methods available to examine interconnections between floods and tree growth allows dendrochronologists to apply their style of paleoflood hydrology in many settings that are not appropriate for techniques that depend on geological evidence.