A time-series of strains in response to wind measured on 19 trees in Danum Valley, Malaysia

Strain data measured on the trunks of 19 trees in the Danum Valley, Malaysia. It also contains wind speed data measured using anemometers attached to emergent trees nearby. This data can be used to extract the fundamental swaying frequencies of these trees, and to quantify the relationship between wind speed and bending strain and so estimate wind damage risk. This data would be useful for anyone studying the interaction between wind and trees. The tallest tree in this data set is approximately 51 m tall. The nearby field centre is located at (4°57'53.0"N 117°48'18.3"E) and the measured trees are part of the 50ha Smithsonian plot and the 1ha intensive carbon monitoring plot 1. 

Methods
Strain (extension / original length) was measured using pairs of strain gauges attached approximately perpendicularly to each other in order to capture the two axes of motion. Strain was monitored at 4Hz and all times are given in UTC. Wind speed was monitored at different resolutions according to the instrument. The anemometers were mounted on metal poles attached to the trunk and boomed out approximately 1.5m.