Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Jerry M. Mahon, Jr.; Lewis Jordan; Lawrence R. Schimleck; Alexander Clark, III; Richard F. Daniels
    Date: 2009
    Source: Journal article Southern Journal of Applied Forestry. 33(2): 62-68.
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (561.98 KB)


    One method of evaluating potential product performance is the use of acoustic tools for identifying trees with high stiffness. Acoustic velocities for 100 standing loblolly pine (Pinus taeda) trees, obtained with the transmitting and receiving probes placed on the same face and opposite faces, were compared. Significant differences in velocity between the two methods were found, with velocity determined using the opposite-face method generally dependent on stem diameter, or the amount of wood through which the stress wave must pass. The only opposite-face method in which the velocities did not vary with dbh was for an assumed flight path where the stress wave traveled from the transmitting probe around the circumference of the stem in the outerwood and then down longitudinally to the receiving probe. Variation in velocities from hit-to-hit was 62% less using the opposite-face method compared with the same-face method. It is recommended to use the circumferential opposite-face (Vel_OC) calculation when determining stress wave velocity for a standing tree.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Mahon Jr., Jerry M.; Jordan, Lewis; Schimleck, Lawrence R.; Clark III, Alexander; Daniels, Richard F. 2009. A comparison of sampling methods for a standing tree acoustic device. Southern Journal of Applied Forestry. 33(2): 62-68.


    acoustic velocity, analysis of covariance, loblolly pine, time of flight, TreeSonic

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page