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  "author": "Adams, A.C., and Ramage, J.K., 2024, Cumulative 
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  "author": "Adams, A.C., and Ramage, J.K., 2024, Cumulative 
            
3
compaction (from site activation through 2023) of subsurface sediments 
3
compaction (from site activation through 2023) of subsurface sediments 
            
4
in the Chicot and Evangeline aquifers in the greater Houston Area, 
4
in the Chicot and Evangeline aquifers in the greater Houston Area, 
            
5
Texas (ver. 6.0, September 2024): U.S. Geological Survey data release, 
5
Texas (ver. 6.0, September 2024): U.S. Geological Survey data release, 
            
6
https://doi.org/10.5066/P9YGUE2V. ",
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https://doi.org/10.5066/P9YGUE2V. ",
            
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  "author_email": "",
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  "author_email": "Lissa Pearson",
            
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  "license_id": "notspecified",
            
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  "license_title": "License not specified",
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  "license_title": "License not specified",
            
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  "maintainer": "",
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  "maintainer": "",
            
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  "maintainer_email": "",
            
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  "metadata_modified": "2025-07-22T19:59:33.078066",
            
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  "name": "cumulative-compaction-houston",
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  "name": "cumulative-compaction-houston",
            
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  "notes": "# Cumulative compaction (from site activation through 
19
  "notes": "# Cumulative compaction (from site activation through 
            
20
2023) of subsurface sediments in the Chicot and Evangeline aquifers in 
20
2023) of subsurface sediments in the Chicot and Evangeline aquifers in 
            
21
the greater Houston Area, Texas (ver. 6.0, September 2024)  
21
the greater Houston Area, Texas (ver. 6.0, September 2024)  
            
22
\r\n\r\nThe U.S. Geological Survey (USGS), in cooperation with the 
22
\r\n\r\nThe U.S. Geological Survey (USGS), in cooperation with the 
            
23
Harris\u2010Galveston Subsidence District, City of Houston, and the 
23
Harris\u2010Galveston Subsidence District, City of Houston, and the 
            
24
Fort Bend Subsidence District, produced a dataset through 2023 of 
24
Fort Bend Subsidence District, produced a dataset through 2023 of 
            
25
compaction values in the Chicot and Evangeline aquifers in the greater 
25
compaction values in the Chicot and Evangeline aquifers in the greater 
            
26
Houston area, Texas.\r\n\r\nThis dataset contains compaction values 
26
Houston area, Texas.\r\n\r\nThis dataset contains compaction values 
            
27
associated with subsurface sediments (mostly in the fine-grained silt 
27
associated with subsurface sediments (mostly in the fine-grained silt 
            
28
and clay layers because little compaction occurs in sand layers) in 
28
and clay layers because little compaction occurs in sand layers) in 
            
29
the Chicot and Evangeline aquifers that were recorded continuously 
29
the Chicot and Evangeline aquifers that were recorded continuously 
            
30
using analog technology. There are 14 extensometers at 12 locations (a 
30
using analog technology. There are 14 extensometers at 12 locations (a 
            
31
pair of extensometers are installed at different depths at 2 of the 12 
31
pair of extensometers are installed at different depths at 2 of the 12 
            
32
locations). Of the 14 extensometers, 13 were activated between 1973 
32
locations). Of the 14 extensometers, 13 were activated between 1973 
            
33
and 1980 in either Harris or Galveston Counties, whereas the 14th 
33
and 1980 in either Harris or Galveston Counties, whereas the 14th 
            
34
extensometer was activated in Fort Bend County in 2017. Data from one 
34
extensometer was activated in Fort Bend County in 2017. Data from one 
            
35
of the 14 extensometers (one of the two extensometers at the Baytown 
35
of the 14 extensometers (one of the two extensometers at the Baytown 
            
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site) are not being published this year because of an equipment 
36
site) are not being published this year because of an equipment 
            
37
malfunction at this site. The cumulative compaction data for each 
37
malfunction at this site. The cumulative compaction data for each 
            
38
extensometer are retrieved about 12 times per year during site visits. 
38
extensometer are retrieved about 12 times per year during site visits. 
            
39
Cumulative compaction data collected at each extensometer are 
39
Cumulative compaction data collected at each extensometer are 
            
40
provided, starting with the data from the year the extensometer was 
40
provided, starting with the data from the year the extensometer was 
            
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installed through 2023. The amount of compaction measured between site 
41
installed through 2023. The amount of compaction measured between site 
            
42
visits is determined by subtracting the cumulative compaction value 
42
visits is determined by subtracting the cumulative compaction value 
            
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associated with the earlier of the two site visits of interest from 
43
associated with the earlier of the two site visits of interest from 
            
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the cumulative compaction value associated with the latter of the two 
44
the cumulative compaction value associated with the latter of the two 
            
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site visits of interest.",
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      "description": "Tables of cumulative compaction data combined 
            
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into a single csv file.  Data is the 2023 version processed on June 
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into a single csv file.  Data is the 2023 version processed on June 
            
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      "display_name": "Subsidence",
            
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  "title": "Cumulative Compaction Houston",
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  "title": "Cumulative Compaction Houston",
            
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