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Logbook: September 23, 2004

45° 56.02' N, 130° 0.81' W

image of pressure sensor
The pressure sensor instrument is placed on ROPOS. The instrument is lifted by ROPOS onto a triangular-shaped platform at each benchmark site.
 

There are 36 hours of dive time planned for R855, almost all of it devoted to taking pressure sensor measurements. Five locations (Caldera center, Magnesia, Marker 33, Bag City and South Pillow Mound) within the caldera have benchmark platforms where 30 minute measurements are performed. The measurements are designed to see if Axial volcano is inflating, due to magma accumulation underground. The measurements from previous years show that the center of the caldera has been uplifting at a rate of 20 cm/yr since 2000. Dive R855 began at 8am PDT and continues through the night.

 

 

 

Sep/Oct 2004
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Click on day to view other logbook entries. <- Back | Forward->

 

Today's photos
click for larger view
image of benchmark at southern pillow mound site
Overview of the benchmark..
image of sensor on benchmark
Pressure sensor ...

 

 

 
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