[OBSICtec] Alaska Amphibious Community Seismic Experiment (AACSE): Horizontal component orientations available

[Andrew H Barclay]

OBSIC has measured the orientations of the horizontal components of 48 of 75 OBS deployed as part of the AACSE (FDSN network code XO).

The measurements are available at:
http://ds.iris.edu/data/reports/XO_2018_2019/AACSE_orientations_DLOPy.csv<https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fds.iris.edu%2Fdata%2Freports%2FXO_2018_2019%2FAACSE_orientations_DLOPy.csv&data=04%7C01%7Cobsictec%40whoi.edu%7C40176583ee224179eb5a08d8e3d34134%7Cd44c5cc6d18c46cc8abd4fdf5b6e5944%7C0%7C0%7C637509843768384316%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=MP8%2BM56eUxpH%2BlCqfIaYG2HtZx2P4iBYrFKxwAvSQh4%3D&reserved=0>

A description of the method used is at:
http://ds.iris.edu/data/reports/XO_2018_2019/AACSE_orientations_Readme.pdf<https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fds.iris.edu%2Fdata%2Freports%2FXO_2018_2019%2FAACSE_orientations_Readme.pdf&data=04%7C01%7Cobsictec%40whoi.edu%7C40176583ee224179eb5a08d8e3d34134%7Cd44c5cc6d18c46cc8abd4fdf5b6e5944%7C0%7C0%7C637509843768394317%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=lQdk00tIKJeye4d4Cq6ayYZ1o8Eii8lD8sxuQdUvC04%3D&reserved=0>

We have tried to address the subjectivity inherent in orientation estimates by using a well-documented and largely automated method that yields realistic uncertainties and results that can be easily reproduced.  We’d welcome feedback on this approach and on the AACSE measurements themselves.

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