{"id":{"repo_id":"cornell","oai_identifier":"oai:ecommons.cornell.edu:1813/102922"},"canonical_url":"https://search.dev.ndltd.org/etd/cornell/oai:ecommons.cornell.edu:1813/102922","repository":{"repo_id":"cornell","name":"Cornell University","base_url":"https://ecommons.cornell.edu/server/oai/request"},"display":{"title":"HYDROGEOLOGIC PROPERTY ESTIMATION IN PLATE BOUNDARY OBSERVATORY BOREHOLES USING TIDAL RESPONSE ANALYSIS","abstract":"Understanding hydrogeologic properties that control fluid flow and pressure distribution is important in characterizing earthquake and deformation processes because of the influence pore pressures have on effective stress. Here, we utilize borehole pressure changes in response to Earth tides to determine hydrogeologic properties and time variations for 17 boreholes within NSF Earthscope’s Plate Boundary Observatory (PBO) network along the San Andreas fault and Cascadia subduction zone. Permeability and hydraulic diffusivity determinations range from 6.4_10-16 – 8.4_10-14 m2 and 1_10-4 – 9_10-1 m2s-1, respectively, whereas specific storage values are ~1_10-6 m-1. Values are generally consistent through time, reasonable given lithology, and are comparable to other regional studies and traditional aquifer test determinations available for one borehole. No obvious trends with distance from large faults are observed, in contrast with previously determined variations in the pressure response to seismic waves, and only one borehole exhibits permeability enhancement by earthquakes.","abstract_html":"Understanding hydrogeologic properties that control fluid flow and pressure distribution is important in characterizing earthquake and deformation processes because of the influence pore pressures have on effective stress. Here, we utilize borehole pressure changes in response to Earth tides to determine hydrogeologic properties and time variations for 17 boreholes within NSF Earthscope’s Plate Boundary Observatory (PBO) network along the San Andreas fault and Cascadia subduction zone. Permeability and hydraulic diffusivity determinations range from 6.4_10-16 – 8.4_10-14 m2 and 1_10-4 – 9_10-1 m2s-1, respectively, whereas specific storage values are ~1_10-6 m-1. Values are generally consistent through time, reasonable given lithology, and are comparable to other regional studies and traditional aquifer test determinations available for one borehole. No obvious trends with distance from large faults are observed, in contrast with previously determined variations in the pressure response to seismic waves, and only one borehole exhibits permeability enhancement by earthquakes.","abstract_has_math":false,"creators":["Simon, Jacob Beresford"],"institution":"Cornell University","degree_name":"M.S., Geological Sciences","degree_level":"Master of Science","degree_discipline":"Geological Sciences","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":["Keranen, Katie","Lohman, Rowena B."],"year":2020,"date_issued":"2020-08","date_published":"2020-08","updated_at":"2026-07-24T01:49:10Z","subjects":["Borehole","Fault","Hydrogeologic","Permeability","Poroelasticity","Tidal"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["https://doi.org/10.7298/xj06-rv83"],"render_values":[{"text":"https://doi.org/10.7298/xj06-rv83","href":"https://doi.org/10.7298/xj06-rv83","code":true}]},{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["ProQuest Submission ID: 10996","ProQuest Publication ID: 28030632"],"render_values":[{"text":"ProQuest Submission ID: 10996","href":null,"code":true},{"text":"ProQuest Publication ID: 28030632","href":null,"code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/1813/102922","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Keranen, Katie","Lohman, Rowena B."]},{"key":"dc:creator","label":"Author","values":["Simon, Jacob Beresford"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2021-03-12T17:39:14Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2022-08-27T06:00:25Z"]},{"key":"dc:date.issued","label":"Date","values":["2020-08"]},{"key":"dc:type","label":"Dc Type","values":["dissertation or thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Geological Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master of Science"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S., Geological Sciences"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Cornell University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Borehole","Fault","Hydrogeologic","Permeability","Poroelasticity","Tidal"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["https://doi.org/10.7298/xj06-rv83"]},{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["ProQuest Submission ID: 10996","ProQuest Publication ID: 28030632"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1813/102922"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["48 pages"]},{"key":"dc:description.abstract","label":"Abstract","values":["Understanding hydrogeologic properties that control fluid flow and pressure distribution is important in characterizing earthquake and deformation processes because of the influence pore pressures have on effective stress. Here, we utilize borehole pressure changes in response to Earth tides to determine hydrogeologic properties and time variations for 17 boreholes within NSF Earthscope’s Plate Boundary Observatory (PBO) network along the San Andreas fault and Cascadia subduction zone. Permeability and hydraulic diffusivity determinations range from 6.4_10-16 – 8.4_10-14 m2 and 1_10-4 – 9_10-1 m2s-1, respectively, whereas specific storage values are ~1_10-6 m-1. Values are generally consistent through time, reasonable given lithology, and are comparable to other regional studies and traditional aquifer test determinations available for one borehole. No obvious trends with distance from large faults are observed, in contrast with previously determined variations in the pressure response to seismic waves, and only one borehole exhibits permeability enhancement by earthquakes."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["HYDROGEOLOGIC PROPERTY ESTIMATION IN PLATE BOUNDARY OBSERVATORY BOREHOLES USING TIDAL RESPONSE ANALYSIS"]}]}],"canonical_facts":{"dc:contributor.committeemember":["Keranen, Katie","Lohman, Rowena B."],"dc:creator":["Simon, Jacob Beresford"],"dc:date.accessioned":["2021-03-12T17:39:14Z"],"dc:date.available":["2022-08-27T06:00:25Z"],"dc:date.issued":["2020-08"],"dc:description":["48 pages"],"dc:description.abstract":["Understanding hydrogeologic properties that control fluid flow and pressure distribution is important in characterizing earthquake and deformation processes because of the influence pore pressures have on effective stress. Here, we utilize borehole pressure changes in response to Earth tides to determine hydrogeologic properties and time variations for 17 boreholes within NSF Earthscope’s Plate Boundary Observatory (PBO) network along the San Andreas fault and Cascadia subduction zone. Permeability and hydraulic diffusivity determinations range from 6.4_10-16 – 8.4_10-14 m2 and 1_10-4 – 9_10-1 m2s-1, respectively, whereas specific storage values are ~1_10-6 m-1. Values are generally consistent through time, reasonable given lithology, and are comparable to other regional studies and traditional aquifer test determinations available for one borehole. No obvious trends with distance from large faults are observed, in contrast with previously determined variations in the pressure response to seismic waves, and only one borehole exhibits permeability enhancement by earthquakes."],"dc:format.mimetype":["application/pdf"],"dc:identifier.doi":["https://doi.org/10.7298/xj06-rv83"],"dc:identifier.other":["ProQuest Submission ID: 10996","ProQuest Publication ID: 28030632"],"dc:identifier.uri":["https://hdl.handle.net/1813/102922"],"dc:language.iso":["en"],"dc:subject":["Borehole","Fault","Hydrogeologic","Permeability","Poroelasticity","Tidal"],"dc:title":["HYDROGEOLOGIC PROPERTY ESTIMATION IN PLATE BOUNDARY OBSERVATORY BOREHOLES USING TIDAL RESPONSE ANALYSIS"],"dc:type":["dissertation or thesis"],"thesis:degree_discipline":["Geological Sciences"],"thesis:degree_level":["Master of Science"],"thesis:degree_name":["M.S., Geological Sciences"],"thesis:institution_name":["Cornell University"]},"updated_at":"2026-07-24T01:49:10Z"}