USGS Coastal and Marine Geology Program ERDDAP
Easier access to scientific data
   
Brought to you by USGS CMHRP    

ERDDAP > info > 6832v-a_d2

Grid
DAP
Data
Sub-
set
Table
DAP
Data
Make
A
Graph
W
M
S
Source
Data
Files
Title Sum-
mary
FGDC,
ISO,
Metadata
Back-
ground
Info
RSS E
mail
Institution Dataset ID
   set  data   graph     files  USGS-CMG time-series data: MBAY_LT - 683 - 6832v-a_d2    ?   F   I   M   background (external link) RSS Subscribe
USGS Coastal and ...  ?
6832v-a_d2

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _NCProperties String version=1|netcdflibversion=4.4.1.1|hdf5libversion=1.8.17
attribute NC_GLOBAL BASS_norm_factor double 0.0293
attribute NC_GLOBAL BASS_zero_offset_A double 9.62
attribute NC_GLOBAL BASS_zero_offset_B double -6.49
attribute NC_GLOBAL BASS_zero_offset_C double -0.01
attribute NC_GLOBAL BASS_zero_offset_D double 38.46
attribute NC_GLOBAL cdm_data_type String TimeSeries
attribute NC_GLOBAL cdm_timeseries_variables String latitude, longitude, altitude, feature_type_instance
attribute NC_GLOBAL COMPOSITE double 1.0
attribute NC_GLOBAL contributor_name String B. Butman
attribute NC_GLOBAL contributor_role String principalInvestigator
attribute NC_GLOBAL Conventions String CF-1.6,ACDD-1.3, COARDS
attribute NC_GLOBAL CREATION_DATE String 05-Jan-2009 11:52:35
attribute NC_GLOBAL creator_email String rsignell at usgs.gov
attribute NC_GLOBAL creator_name String Rich Signell
attribute NC_GLOBAL creator_phone String +1 (508) 548-8700
attribute NC_GLOBAL creator_url String https://www.usgs.gov (external link)
attribute NC_GLOBAL DATA_CMNT String Boston Buoy BASS MIDAS
attribute NC_GLOBAL DATA_ORIGIN String USGS WHFC Sed Trans Grp
attribute NC_GLOBAL date_created String 2017-04-11T22:16:00Z
attribute NC_GLOBAL date_issued String 2017-04-11T22:16:00Z
attribute NC_GLOBAL date_metadata_modified String 2017-04-11T22:16:00Z
attribute NC_GLOBAL date_modified String 2017-04-11T22:16:00Z
attribute NC_GLOBAL DELTA_T String 225
attribute NC_GLOBAL DESCRIPT String Boston BASS MIDAS
attribute NC_GLOBAL Easternmost_Easting double -70.78237
attribute NC_GLOBAL EXPERIMENT String Mass Bay Longterm
attribute NC_GLOBAL featureType String TimeSeries
attribute NC_GLOBAL FILL_FLAG double 0.0
attribute NC_GLOBAL geospatial_bounds String POINT(-70.7823715209961 42.3772087097168)
attribute NC_GLOBAL geospatial_bounds_crs String EPSG:4326
attribute NC_GLOBAL geospatial_lat_max double 42.37721
attribute NC_GLOBAL geospatial_lat_min double 42.37721
attribute NC_GLOBAL geospatial_lat_resolution long 0
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -70.78237
attribute NC_GLOBAL geospatial_lon_min double -70.78237
attribute NC_GLOBAL geospatial_lon_resolution long 0
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double -30.33185
attribute NC_GLOBAL geospatial_vertical_min double -30.33185
attribute NC_GLOBAL geospatial_vertical_positive String up
attribute NC_GLOBAL geospatial_vertical_resolution String 0
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL grid_mapping_epsg_code String EPSG:4326
attribute NC_GLOBAL grid_mapping_inverse_flattening double 298.257223563
attribute NC_GLOBAL grid_mapping_long_name String http://www.opengis.net/def/crs/EPSG/0/4326 (external link)
attribute NC_GLOBAL grid_mapping_name String latitude_longitude
attribute NC_GLOBAL grid_mapping_semi_major_axis double 6378137.0
attribute NC_GLOBAL history String Fri Nov 1 20:20:05 2019: ncatted -a project,global,a,c,, CMG_Portal MBAY_LT/6832v-a_d2.nc
WATER_DEPTH related attributes corrected by adj_tripod_depth: 24 pad values replaced by linear interpolations using EPIC_interp.m :Variables u_1205, v_1206, CD_310, CS_300, w_1204, Werr_1201, edited using rangedit.m to select w_1204 in the range -5 to 2. :Trimmed using truncate.m to select records in the range 241 to 40136. :Time fixed in dolly.m by increasing time -0.12528 hours from record 1 thru 9408.:Time fixed in dolly.m by increasing time 1 hours from record 23061 thru 23076.:Concatenation of files 6832Av-cal_d2.nc through 6832Fv-cal_d2.nc :Calibrated using bass_avg.m. Pre zeroes used. :Converted by MIDAS.EXE v2.00
2017-04-11T22:16:00Z - pyaxiom - File created using pyaxiom
attribute NC_GLOBAL id String 6832v-a_d2
attribute NC_GLOBAL infoUrl String https://stellwagen.er.usgs.gov/ (external link)
attribute NC_GLOBAL INST_TYPE String MIDAS
attribute NC_GLOBAL institution String USGS Coastal and Marine Geology Program
attribute NC_GLOBAL instrument_number String MIDAS11
attribute NC_GLOBAL keywords String CD_310, comp_1406, crs, CS_300, feature_type_instance, latitude, longitude, platform, tiltx_4017, tilty_4018, time, u_1205, v_1206, w_1204, Werr_1201, z
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL latitude double 42.37720777829488
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL longitude double -70.78239833301969
attribute NC_GLOBAL magnetic_variation double -16.0
attribute NC_GLOBAL MOORING long 683
attribute NC_GLOBAL naming_authority String gov.usgs.cmgp
attribute NC_GLOBAL ncei_template_version String NCEI_NetCDF_TimeSeries_Orthogonal_Template_v2.0
attribute NC_GLOBAL NCO String netCDF Operators version 4.8.1 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)
attribute NC_GLOBAL Northernmost_Northing double 42.37721
attribute NC_GLOBAL original_filename String 6832v-a_d2.nc
attribute NC_GLOBAL original_folder String MBAY_LT
attribute NC_GLOBAL pod_misalignment_angle double 0.0
attribute NC_GLOBAL PROJECT String MWRA
attribute NC_GLOBAL project String U.S. Geological Survey Oceanographic Time-Series Data, CMG_Portal
attribute NC_GLOBAL project_summary String Measurements of currents and other oceanographic properties were made to assess the impact of sewage discharge from the proposed outfall site.
attribute NC_GLOBAL project_title String Long-term observations in Massachusetts Bay; Site A-Boston Harbor
attribute NC_GLOBAL publisher_email String emontgomery at usgs.gov
attribute NC_GLOBAL publisher_name String Ellyn Montgomery
attribute NC_GLOBAL publisher_phone String +1 (508) 548-8700
attribute NC_GLOBAL publisher_url String https://www.usgs.gov (external link)
attribute NC_GLOBAL source String USGS
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 42.37721
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL start_time String 06-Feb-2002 15:32:31
attribute NC_GLOBAL stop_time String 21-May-2002 13:20:57
attribute NC_GLOBAL subsetVariables String latitude, longitude, altitude, feature_type_instance
attribute NC_GLOBAL summary String USGS-CMG time-series data from the Long-term observations in Massachusetts Bay; Site A-Boston Harbor project, mooring 683 and package 6832v-a_d2. Measurements of currents and other oceanographic properties were made to assess the impact of sewage discharge from the proposed outfall site.
attribute NC_GLOBAL time_coverage_duration String PT8977706S
attribute NC_GLOBAL time_coverage_end String 2002-05-21T13:20:57Z
attribute NC_GLOBAL time_coverage_resolution String PT225S
attribute NC_GLOBAL time_coverage_start String 2002-02-06T15:32:31Z
attribute NC_GLOBAL title String USGS-CMG time-series data: MBAY_LT - 683 - 6832v-a_d2
attribute NC_GLOBAL VAR_DESC String tiltx:tilty:comp:u:v:CD:CS:w:Werr
attribute NC_GLOBAL VAR_FILL String NaN
attribute NC_GLOBAL WATER_DEPTH float 30.72185
attribute NC_GLOBAL WATER_DEPTH_NOTE String water depth computed using mean pressure from 6832tcp-a1h.nc - atmosphere (1013.3): (m)
attribute NC_GLOBAL Westernmost_Easting double -70.78237
variable feature_type_instance   String  
attribute feature_type_instance cf_role String timeseries_id
attribute feature_type_instance ioos_category String Unknown
attribute feature_type_instance long_name String Identifier for each feature type instance
variable latitude   float  
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range float 42.37721, 42.37721
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude ioos_category String Location
attribute latitude long_name String sensor latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
attribute latitude valid_max float 42.37721
attribute latitude valid_min float 42.37721
variable longitude   float  
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float -70.78237, -70.78237
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude ioos_category String Location
attribute longitude long_name String sensor longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
attribute longitude valid_max float -70.78237
attribute longitude valid_min float -70.78237
variable crs   int  
attribute crs actual_range int -2147483647, -2147483647
attribute crs epsg_code String EPSG:4326
attribute crs grid_mapping_name String latitude_longitude
attribute crs inverse_flattening double 298.257223563
attribute crs ioos_category String Unknown
attribute crs long_name String http://www.opengis.net/def/crs/EPSG/0/4326 (external link)
attribute crs semi_major_axis double 6378137.0
variable platform   int  
attribute platform actual_range int -2147483647, -2147483647
attribute platform definition String http://mmisw.org/ont/ioos/definition/stationID (external link)
attribute platform ioos_category String Unknown
attribute platform ioos_code String 6832v-a_d2
attribute platform long_name String USGS-CMG time-series data from the Long-term observations in Massachusetts Bay; Site A-Boston Harbor project, mooring 683 and package 6832v-a_d2. Measurements of currents and other oceanographic properties were made to assess the impact of sewage discharge from the proposed outfall site.
attribute platform nodc_name String FIXED PLATFORM, MOORINGS
attribute platform short_name String USGS-CMG time-series data: MBAY_LT - 683 - 6832v-a_d2
attribute platform type String fixed
variable time   double  
attribute time _ChunkSizes uint 1000
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.013009551E9, 1.021987257E9
attribute time axis String T
attribute time calendar String gregorian
attribute time ioos_category String Time
attribute time long_name String time of measurement
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
variable altitude   float  
attribute altitude _CoordinateAxisType String Height
attribute altitude _CoordinateZisPositive String up
attribute altitude _FillValue float -9999.9
attribute altitude actual_range float -30.33185, -30.33185
attribute altitude axis String Z
attribute altitude colorBarMaximum double 8000.0
attribute altitude colorBarMinimum double -8000.0
attribute altitude grid_mapping String crs
attribute altitude ioos_category String Location
attribute altitude long_name String z of the sensor relative to the water surface
attribute altitude positive String up
attribute altitude standard_name String altitude
attribute altitude units String m
attribute altitude valid_max float -30.331848
attribute altitude valid_min float -30.331848
variable CD_310   float  
attribute CD_310 _ChunkSizes uint 1000
attribute CD_310 _FillValue float 1.0E35
attribute CD_310 actual_range float 1.017364E-4, 359.974
attribute CD_310 ancillary_variables String platform
attribute CD_310 colorBarMaximum double 359.97403
attribute CD_310 colorBarMinimum double 1.0173642E-4
attribute CD_310 coordinates String time z latitude longitude
attribute CD_310 coverage_content_type String physicalMeasurement
attribute CD_310 epic_code int 310
attribute CD_310 FORTRAN_format String f8.2
attribute CD_310 generic_name String vdir
attribute CD_310 grid_mapping String crs
attribute CD_310 interp_note String 4 pad values interpolated.
attribute CD_310 ioos_category String Unknown
attribute CD_310 long_name String Current direction
attribute CD_310 missing_value float 1.0E35
attribute CD_310 platform String platform
attribute CD_310 sensor_depth float 30.3318
attribute CD_310 sensor_hab float 0.39
attribute CD_310 sensor_type String BASS
attribute CD_310 serial_number String Sys #11
attribute CD_310 standard_name String direction_of_sea_water_velocity
attribute CD_310 units String degree
variable CS_300   float  
attribute CS_300 _ChunkSizes uint 1000
attribute CS_300 _FillValue float 1.0E35
attribute CS_300 actual_range float 5.528306E-5, 0.197105
attribute CS_300 ancillary_variables String platform
attribute CS_300 colorBarMaximum double 0.19710498
attribute CS_300 colorBarMinimum double 5.5283064E-5
attribute CS_300 coordinates String time z latitude longitude
attribute CS_300 coverage_content_type String physicalMeasurement
attribute CS_300 epic_code int 300
attribute CS_300 FORTRAN_format String f8.2
attribute CS_300 generic_name String vspd
attribute CS_300 grid_mapping String crs
attribute CS_300 interp_note String 4 pad values interpolated.
attribute CS_300 ioos_category String Unknown
attribute CS_300 long_name String Current speed
attribute CS_300 missing_value float 1.0E35
attribute CS_300 platform String platform
attribute CS_300 sensor_depth float 30.3318
attribute CS_300 sensor_hab float 0.39
attribute CS_300 sensor_type String BASS
attribute CS_300 serial_number String Sys #11
attribute CS_300 standard_name String sea_water_speed
attribute CS_300 units String m/s
variable Werr_1201   float  
attribute Werr_1201 _ChunkSizes uint 1000
attribute Werr_1201 _FillValue float 1.0E35
attribute Werr_1201 actual_range float -1.019383, 0.1936774
attribute Werr_1201 ancillary_variables String platform
attribute Werr_1201 colorBarMaximum double 0.19367735
attribute Werr_1201 colorBarMinimum double -1.0193828
attribute Werr_1201 coordinates String time z latitude longitude
attribute Werr_1201 coverage_content_type String physicalMeasurement
attribute Werr_1201 epic_code int 1201
attribute Werr_1201 FORTRAN_format String F8.1
attribute Werr_1201 generic_name String w
attribute Werr_1201 grid_mapping String crs
attribute Werr_1201 interp_note String 4 pad values interpolated.
attribute Werr_1201 ioos_category String Unknown
attribute Werr_1201 long_name String Error Velocity
attribute Werr_1201 missing_value float 1.0E35
attribute Werr_1201 platform String platform
attribute Werr_1201 sensor_depth float 30.3318
attribute Werr_1201 sensor_hab float 0.39
attribute Werr_1201 sensor_type String BASS
attribute Werr_1201 serial_number String Sys #11
attribute Werr_1201 units String cm/s
variable comp_1406   float  
attribute comp_1406 _ChunkSizes uint 1000
attribute comp_1406 _FillValue float 1.0E35
attribute comp_1406 actual_range float 277.6093, 280.1681
attribute comp_1406 ancillary_variables String platform
attribute comp_1406 AtoD_factor double 0.00122
attribute comp_1406 cal_A0 double -28.06
attribute comp_1406 cal_A1 double 99.45
attribute comp_1406 cal_A2 double 0.26
attribute comp_1406 cal_A3 double -0.04
attribute comp_1406 colorBarMaximum double 280.1681
attribute comp_1406 colorBarMinimum double 277.60925
attribute comp_1406 comment String corrected for magnetic variation
attribute comp_1406 coordinates String time z latitude longitude
attribute comp_1406 coverage_content_type String physicalMeasurement
attribute comp_1406 epic_code int 1406
attribute comp_1406 FORTRAN_format String f10.1
attribute comp_1406 generic_name String comp
attribute comp_1406 grid_mapping String crs
attribute comp_1406 ioos_category String Unknown
attribute comp_1406 long_name String Instrument Heading (BASS pods)
attribute comp_1406 missing_value float 1.0E35
attribute comp_1406 platform String platform
attribute comp_1406 sensor_depth float 28.4418
attribute comp_1406 sensor_hab float 2.28
attribute comp_1406 sensor_type String KVH Autocomp
attribute comp_1406 serial_number String 0011
attribute comp_1406 standard_name String platform_orientation
attribute comp_1406 units String degree
variable tiltx_4017   float  
attribute tiltx_4017 _ChunkSizes uint 1000
attribute tiltx_4017 _FillValue float 1.0E35
attribute tiltx_4017 actual_range float 0.2724257, 1.061799
attribute tiltx_4017 ancillary_variables String platform
attribute tiltx_4017 AtoD_factor double 0.00122
attribute tiltx_4017 cal_A double 47.074
attribute tiltx_4017 cal_B double -9.2037
attribute tiltx_4017 cal_C double -5.85334
attribute tiltx_4017 cal_D double 0.801827
attribute tiltx_4017 colorBarMaximum double 1.0617989
attribute tiltx_4017 colorBarMinimum double 0.27242568
attribute tiltx_4017 coordinates String time z latitude longitude
attribute tiltx_4017 coverage_content_type String physicalMeasurement
attribute tiltx_4017 epic_code int 4017
attribute tiltx_4017 FORTRAN_format String f10.3
attribute tiltx_4017 generic_name String tilt
attribute tiltx_4017 grid_mapping String crs
attribute tiltx_4017 ioos_category String Unknown
attribute tiltx_4017 long_name String TILT IN POD X-Z PLANE
attribute tiltx_4017 missing_value float 1.0E35
attribute tiltx_4017 platform String platform
attribute tiltx_4017 sensor_depth float 28.4418
attribute tiltx_4017 sensor_hab float 2.28
attribute tiltx_4017 sensor_type String Spectron
attribute tiltx_4017 serial_number String 130
attribute tiltx_4017 units String degrees
attribute tiltx_4017 voltage_divider_factor double 1.2
variable tilty_4018   float  
attribute tilty_4018 _ChunkSizes uint 1000
attribute tilty_4018 _FillValue float 1.0E35
attribute tilty_4018 actual_range float -1.026323, -0.03467205
attribute tilty_4018 ancillary_variables String platform
attribute tilty_4018 AtoD_factor double 0.00122
attribute tilty_4018 cal_A double -46.9931
attribute tilty_4018 cal_B double 9.2748
attribute tilty_4018 cal_C double 5.80709
attribute tilty_4018 cal_D double -0.797854
attribute tilty_4018 colorBarMaximum double -0.034672048
attribute tilty_4018 colorBarMinimum double -1.0263232
attribute tilty_4018 coordinates String time z latitude longitude
attribute tilty_4018 coverage_content_type String physicalMeasurement
attribute tilty_4018 epic_code int 4018
attribute tilty_4018 FORTRAN_format String f10.3
attribute tilty_4018 generic_name String tilt
attribute tilty_4018 grid_mapping String crs
attribute tilty_4018 ioos_category String Unknown
attribute tilty_4018 long_name String TILT IN POD Y-Z PLANE
attribute tilty_4018 missing_value float 1.0E35
attribute tilty_4018 platform String platform
attribute tilty_4018 sensor_depth float 28.4418
attribute tilty_4018 sensor_hab float 2.28
attribute tilty_4018 sensor_type String Spectron
attribute tilty_4018 serial_number String 130
attribute tilty_4018 units String degrees
attribute tilty_4018 voltage_divider_factor double 1.2
variable u_1205   float  
attribute u_1205 _ChunkSizes uint 1000
attribute u_1205 _FillValue float 1.0E35
attribute u_1205 actual_range float -0.1959292, 0.1257727
attribute u_1205 ancillary_variables String platform
attribute u_1205 colorBarMaximum double 0.12577266
attribute u_1205 colorBarMinimum double -0.1959292
attribute u_1205 coordinates String time z latitude longitude
attribute u_1205 coverage_content_type String physicalMeasurement
attribute u_1205 epic_code int 1205
attribute u_1205 generic_name String u
attribute u_1205 grid_mapping String crs
attribute u_1205 interp_note String 4 pad values interpolated.
attribute u_1205 ioos_category String Unknown
attribute u_1205 long_name String Eastward (u) velocity
attribute u_1205 missing_value float 1.0E35
attribute u_1205 platform String platform
attribute u_1205 sensor_depth float 30.3318
attribute u_1205 sensor_hab float 0.39
attribute u_1205 sensor_type String BASS
attribute u_1205 serial_number String Sys #11
attribute u_1205 standard_name String eastward_sea_water_velocity
attribute u_1205 units String m/s
variable v_1206   float  
attribute v_1206 _ChunkSizes uint 1000
attribute v_1206 _FillValue float 1.0E35
attribute v_1206 actual_range float -0.1187143, 0.1254982
attribute v_1206 ancillary_variables String platform
attribute v_1206 colorBarMaximum double 0.12549824
attribute v_1206 colorBarMinimum double -0.11871434
attribute v_1206 coordinates String time z latitude longitude
attribute v_1206 coverage_content_type String physicalMeasurement
attribute v_1206 epic_code int 1206
attribute v_1206 generic_name String v
attribute v_1206 grid_mapping String crs
attribute v_1206 interp_note String 4 pad values interpolated.
attribute v_1206 ioos_category String Unknown
attribute v_1206 long_name String Northward (v) velocity
attribute v_1206 missing_value float 1.0E35
attribute v_1206 platform String platform
attribute v_1206 sensor_depth float 30.3318
attribute v_1206 sensor_hab float 0.39
attribute v_1206 sensor_type String BASS
attribute v_1206 serial_number String Sys #11
attribute v_1206 standard_name String northward_sea_water_velocity
attribute v_1206 units String m/s
variable w_1204   float  
attribute w_1204 _ChunkSizes uint 1000
attribute w_1204 _FillValue float 1.0E35
attribute w_1204 actual_range float -0.02205588, 0.009850567
attribute w_1204 ancillary_variables String platform
attribute w_1204 colorBarMaximum double 0.009850567
attribute w_1204 colorBarMinimum double -0.022055883
attribute w_1204 coordinates String time z latitude longitude
attribute w_1204 coverage_content_type String physicalMeasurement
attribute w_1204 epic_code int 1204
attribute w_1204 generic_name String w
attribute w_1204 grid_mapping String crs
attribute w_1204 interp_note String 4 pad values interpolated.
attribute w_1204 ioos_category String Unknown
attribute w_1204 long_name String Upward (w) velocity
attribute w_1204 missing_value float 1.0E35
attribute w_1204 platform String platform
attribute w_1204 sensor_depth float 30.3318
attribute w_1204 sensor_hab float 0.39
attribute w_1204 sensor_type String BASS
attribute w_1204 serial_number String Sys #11
attribute w_1204 standard_name String upward_sea_water_velocity
attribute w_1204 units String m/s

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
ERDDAP, Version 2.23
Disclaimers | Privacy Policy | Contact