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1、Time and Space,Introduction Definition of time series Linking temporal data with spatial features Streamflow time series Time series of Nexrad data,Hydrologic Information System,Analysis, Modeling, Decision Making,Arc Hydro Geodatabase,Space-Time Scales and Hydrologic Processes,Time,Space,Figure ada
2、pted fromSivapalan and Bloschl (2000).,Subsurface water,Surface water,Atmospheric water,Spring and Fall 2002,March 2002,October 2002,Drought in Northeast,Drought in Northwest,USGS NWISWebhttp:/water.usgs.gov,Real-time and Historic Data Streamflow and stage Groundwater levels Water Quality Site infor
3、mation Tabular or Graphical Format,Streamstats,A program for finding streamflow statistics at any location on a stream,http:/ststdmamrl.er.usgs.gov/streamstats/,Space,Historical daily mean discharge,Streamflow statistics,Real Time data,Streamflow Information in Space and Time,Time,At Gages,Anywhere
4、on a Stream,Future Possibilities,Current,Streamstats,Hydrologic Information Continuum,Past,Present,Future,Time,Space,Point,Continuous Surface,Area,Line,Hydrologic Data in Space and Time,Coupling Spatial and Temporal Data,1 hour Nexard Rainfall on the Guadalupe Basin October 13, 2001,Time and Space,I
5、ntroduction Definition of time series Linking temporal data with spatial features Streamflow time series Time series of Nexrad data,TSDateTime,FeatureID,TSType,TSValue,Arc Hydro Time Series Object,(Type of Data),(Spatial Feature),(Time of measurement),(Data value),TSDateTime,FeatureID,TSType,TSValue
6、,Arc Hydro Time Series Object,View 1: Time Series for a Spatial Feature,TSDateTime,FeatureID,TSType,101,View 2: Time Series of a Particular Type,TSDateTime,FeatureID,TSType,Evaporation,View 3: Time Series of a ParticularType for a Single Feature,TSDateTime,FeatureID,TSType,Evaporation,View 4: A Time
7、 “Snapshot” of Spatial Attributes,TSDateTime,FeatureID,TSType,1989-03-30 01:00:00,Time Series Type,Unified Modeling Language Representation in Visio 2000,Time series class properties,TSTypeID integer which indexes type of time series Variable Name of the variable (text) Units Units of measurement (t
8、ext) IsRegular True/False to indicate whether measured at regular time intervals or irregularly (boolean) TSInterval Time interval for regular data (Coded Value Domain of acceptable intervals) DataType Type of time series data (Coded Value Domain of specified types) Origin Recorded or Generated (Cod
9、ed Value Domain),Coded Value Domains,Data Types,Time and Space,Introduction Definition of time series Linking temporal data with spatial features Streamflow time series Time series of Nexrad data,Connecting to Time Series,HydroID,CrossSection,HydroPoint,TimeSeries,Time,Flow,FeatureID of time series
10、is HydroID of feature the time series describes,FeatureID,Time and Space,Introduction Definition of time series Linking temporal data with spatial features Streamflow time series Time series of Nexrad data,National Water Information System,Web access to USGS water resources data,Arc Hydro NWIS data
11、retrieval tool,NWIS Data,Metadata Tabular Output Year.Month.Day Discharge (cfs),Example: Austin, TX,Retrieving NWIS Data,Select Gage Layer Enter Period of Record,NWIS Results,Streamflow Time Series,Arc Hydro Time Series Table,Creating a Time Series View,Time Series Extracted to Excel(In Excel, use D
12、ata/Get External Data to query Geodatabase),Geodatabase view,Excel view,Time Series in Arc Hydro USA,1,596 HCDN Stations out of 18,827 gaging Stations (Daily stream flow from Oct, 1988 Sep, 2000 Source: NWIS website),Time and Space,Introduction Definition of time series Linking temporal data with sp
13、atial features Streamflow time series Time series of Nexrad data,HRAP Cells for Nexrad Data,Average area = 14.5 km2,Coupling Spatial and Temporal Data,1 hour Nexard Rainfall on the Guadalupe Basin October 13, 2001,Water Balance in the Landscape,Atmospheric Water,Soil Water,Surface Water,Groundwater,
14、Precipitation,Evaporation,Runoff,Recharge,Baseflow,EDNA Catchments,Average area = 7.5 km2,Modflow Groundwater Cells,Average area = 2.6 km2,Modflow Model of the Edwards-Trinity aquifer,Intersection of Nexrad and Catchments,Atmospheric Water,Soil Water,Surface Water,Surface Water Balance,Intersection of Nexrad and Modflow Cells,Atmospheric Water,Groundwater,Groundwater Balance,Intersection of Nexrad, Catchments and Modflow,Atmospheric Water,Soil Water,Surface Water,Groundwater,
