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Gas

  Volcanic gases      
Attribute Attribute Name Description Format Units
         
In situ spot sampling:        
gd_spt_id Gas ID An identifier for linking with other tables autonumber  
gs_id station id The identifier for linking to station information mediumint  
gd_spt_time Sampling/Measurement time Sampling/Measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). datetime  
gd_spt_gtemp Gas temperature The gas temperature (leave blank for plumes) xxx.x deg C
gd_spt_co2 CO2 wt% Measured CO2 wt% xx.xx wt%
gd_spt_co2_stdd Estimated uncertainty CO2 Estimated uncertainty CO2 x.xx wt%
gd_spt_so2 SO2 wt% Measured SO2 wt% xx.xx wt%
gd_spt_so2_stdd Estimated uncertainty SO2 Estimated uncertainty SO2 x.xx wt%
gd_spt_h2s H2S wt% Measured H2S wt% xx.xx wt%
gd_spt_h2s_stdd Estimated uncertainty H2S Estimated uncertainty H2S x.xx wt%
gd_spt_hcl HCl wt% Measured HCl wt% xx.xx wt%
gd_spt_hcl_stdd Estimated uncertainty HCl Estimated uncertainty HCl x.xx wt%
gd_spt_hf HF wt% Measured HF wt% xx.xx wt%
gd_spt_hf_stdd Estimated uncertainty HF Estimated uncertainty HF x.xx wt%
gd_spt_ch4 CH4 wt% Measured CH4 wt% xx.xx wt%
gd_spt_ch4_stdd Estimated uncertainty CH4 Estimated uncertainty CH4 x.xx wt%
gd_spt_h2 H2 wt% Measured H2 wt% xx.xx wt%
gd_spt_h2_stdd Estimated uncertainty H2 Estimated uncertainty H2 x.xx wt%
gd_spt_co CO wt% Measured CO wt% xx.xx wt%
gd_spt_co_stdd Estimated uncertainty CO Estimated uncertainty CO x.xx wt%
gd_spt_co2_h20free CO2 wt% (water-free) Calculated CO2 water-free xx.xx wt%
gd_spt_so2_h20free SO2 wt% (water free) Calculated SO2 water-free xx.xx wt%
gd_spt_h2s_h20free H2S wt% (water free) Calculated H2S water-free xx.xx wt%
gd_spt_hcl_h20free HCl wt% (water free) Calculated HCl water-free xx.xx wt%
gd_spt_hf_h20free HF wt% (water free) Calcualted HF water-free xx.xx wt%
gd_spt_ch4_h20free CH4 wt% (water free) Calculated CH4 water free xx.xx wt%
gd_spt_h2_h20free H2 wt% (water free) Calculated H2 water free xx.xx wt%
gd_spt_co_h20free CO wt% (water free) Calculated CO water free xx.xx wt%
gd_spt_3he4he 3He/4He Measured 3He/4He xx.xxx ratio
gd_spt_d13c delta 13C Measured delta 13C sxx.x per mil
gd_spt_d34s delta 34S Measured delta 34S sxx.x per mil
gd_spt_d18o delta 18O Measured delta 18O sxxx.x per mil
gd_spt_dd delta D Measured delta D sxx.x per mil
gd_spt_envir Environmental factors Comments on environmental factors, e.g., snowpack, groundwater masking varchar(255)  
gd_spt_submin Sublimate minerals Information on sublimate minerals text  
gd_spt_comm Other comments Additional comments, e.g., tree kill, dead animals, etc. varchar(255)  
cc_id2 Collector ID An identifier for linking to data collector information. mediumint  
ci_id Instrument ID An identifier for linking to instrument information. mediumint  
gd_spt_loaddate Load date The date this row was entered datetime  
cc_id_load Data loader ID The id linking to the person who entered this row of data mediumint  
         
Plume information        
gd_plu_id plume id An identifier for linking with other tables autonumber  
vd_vol_id volcano id An identifier for linking with the volcano tables mediumint  
gd_plu_lat latitude The latitude of the vent sxx.xxxxxxx deg lat
gd_plu_lon longitude The longitude of the vent sxxx.xxxxxxx deg long
gd_plu_datum Datum The datum used for the longitude and latitude. varchar(30)  
gd_plu_height height The height of the plume km  
gd_plu_time datetime The measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). datetime  
gd_plu_co2_ert CO2 emission rate The CO2 emission rate - metric tonnes/day, measured in plume. xxxxx t/d
gd_plu_co2_stdd CO2 emission std deviation The CO2 std deviation xxx t/d
gd_plu_so2_ert SO2 emission rate The SO2 emission rate xxxxx t/d
gd_plu_so2_stdd SO2 emission std deviation The SO2 std deviation xxx t/d
gd_plu_h2s_ert H2S emission rate The H2S emission rate xxxx t/d
gd_plu_h2s_stdd H2S emission std deviation The H2S std deviation xx t/d
gd_plu_hcl_ert HCl emission rate The HCl emission rate xxxx t/d
gd_plu_hcl_stdd HCl emission std deviation The HCl std deviation xx t/d
gd_plu_hf_ert HF emission rate The HF emission rate xxx t/d
gd_plu_hf_stdd HF emission std deviation The HF std deviation xx t/d
gd_plu_co_ert CO emission rate CO emission rate xxx t/d
gd_plu_co_stdd CO emission std deviation CO std deviation xx t/d
gd_plu_mptype Measurement platform Tripod, vehicle, plane, satellite text  
gd_plu_wind Estimated windspeed Estimated windspeed at plume height xx.x m/s
gd_plu_weth Weather notes Cloud? Rain? Wind speed? text  
gd_plu_comm Additional comments Additional comments, please include information on how the data was collected. varchar(255)  
cc_id2 Collector ID An identifier for linking to data collector information. mediumint  
ci_id Instrument ID An identifier for linking to instrument information. mediumint  
gd_plu_loaddate Load date The date this row was entered datetime  
cc_id_load Data loader ID The id linking to the person who entered this row of data mediumint  
         
Continuous measurements        
gd_con_id gas data id An identifier for linking with other tables autonumber  
gs_id station id The identifier for linking to station information mediumint  
gd_con_name site name The name of the collection site, to link to other information about the collection site text  
gd_con_co2 CO2 The measured CO2 concentration xxxx ppm
gd_con_co2_stdd CO2 std deviation Measured CO2 concentration standard deviation. xx ppm
gd_con_so2 SO2 The measured SO2 concentration xxxx ppm
gd_con_so2_stdd SO2 std deviation The measured SO2 concentration standard deviation. xx ppm
gd_con_h2s H2S The measured H2S concentration xxxx ppm
gd_con_h2s_stdd H2S std deviation The measured H2S concentration standard deviation. xx ppm
gd_con_time Time The time the measurement was taken in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). datetime  
cc_id2 Collector ID An identifier for linking to data collector information. mediumint  
ci_id Instrument ID An identifier for linking to instrument information. mediumint  
gd_con_loaddate Load date The date this row was entered datetime  
cc_id_load Data loader ID The id linking to the person who entered this row of data mediumint  
         
Soil gas flux information        
gd_slg_id gas data id An identifier for linking with other tables autonumber  
gs_id station id The identifier for linking to station information mediumint  
gd_slg_name Site name The name of the collection site text  
gd_slg_species Measured species The type of gas measured (CO2, Radon, etc.) text  
gd_slg_fval Flux value The flux value xxxxx.xx g/ m2/ d
gd_slg_fval_err Flux value uncertainty The uncertainty in the flux value xxx.xx g/ m2/ d
gd_slg_time Measurement time Measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). datetime  
gd_slg_agrid Avg. grid spacing Grid spacing if regular; average if not xxxx m
gd_slg_comm Comments e.g., snow on the ground text  
cc_id2 Collector ID An identifier for linking to data collector information. mediumint  
ci_id Instrument ID An identifier for linking to instrument information. mediumint  
gd_slg_loaddate Load date The date this row was entered datetime  
cc_id_load Data loader ID The id linking to the person who entered this row of data mediumint  
         
         
Gas Station        
gs_id gas station ID An identifier for linking with other tables autonumber  
gs_name station name or code The name of the station. text  
cn_id network id Link to network, if applicable mediumint  
gs_utc difference from UTC Time zone relative to UTC - "s" = sign; read as GMT +- xx h. Will be used to convert data to local time where needed. sxx.x  
gs_type Type Fumarole, plume, diffuse soil degassing text  
gs_lat latitude The latitude of the station sxx.xxxxxxx deg lat
gs_lon longitude The longitude of the station sxxx.xxxxxxx deg long
gs_elev elevation The elevation of the land surface sxxxx m above sea level
hs_datum Datum The datum used for the longitude and latitude. varchar(30)  
gs_desc Station description A description of the station and any comments text  
cc_id Contact ID An identifier for linking to contact information. mediumint  
gs_loaddate Load date The date this row was entered datetime  
cc_id_load Data loader ID The id linking to the person who entered this row of data mediumint  
         

Last Updated on 1/12/2004
By chris newhall