Approximation methods for the solution of inverse problems in lake and sea sediment core analysisA theoretical model employing one-dimensional (depth) transport equations to describe vertical redistribution of ocean-floor and lake-floor sediment (particulates, volcanic ash, microtektites, or radioactive tracers) by episodic and nonepisodic events including bioturbation is developed analytically and demonstrated. The principles underlying the model are explained; the model equations are derived; the inverse problem of identifying the depth-dependent bioturbation coefficient is addressed; two approximation theorems are presented; and numerical results for two sample problems are presented graphically. It is suggested that compatification, porosity effects, and depth-dependent sedimentation be taken into account when formulating future models.
Document ID
19860058184
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Banks, H. T. (Brown University Providence, RI, United States)
Rosen, I. G. (Southern California, University Los Angeles, CA, United States)