The FMS data are processed separately from the conventional logs. In particular, the depth computation includes a sticking detection procedure that uses the tool accelerometer data to correct the winch cable depth data when the tool gets stuck and the measurements conflict. This correction is applied from the bottom of the hole, which is set to be consistent with that of the other logs, and can accumulate significant depth differences upward in some instances. As a consequence, the caliper data that have been processed with the FMS are systematically displayed here so as to correlate observations on the FMS images with those classical logs that also display caliper data. This offset remains small in this hole and can be estimated by comparing the caliper recording shown on Fig. AF1 with that of the triple combination tool string shown in fig. F53A of Shipboard Scientific Party (1999c). The distinctive caliper variations at 107.6, 201.9, and 234.9 mbsf on Figure AF1 are found within 10, 90, and 30 cm on figure 53A of Shipboard Scientific Party (1999c).
This appendix provides a full-image coverage of the borehole at 1/200 scale (Fig. AF1). This scale is sufficiently large for the dynamic image to start displaying variations related to lithology (the sliding color equalization window of 2 m is represented by 1 cm) and sufficiently small for the borehole to be represented in a few pages. Structural measurements and lithology with depth are also shown.