YSI_MERGE.SHP: Point shapefile containing valid YSI 600 XLM multi-parameter sonde data (temperature, conductivity, and salinity) in Indian River Bay, Delaware, collected on U.S. Geological Survey Field Activity 2010-006-FA in April 2010 (Geographic, WGS 84)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: John F. Bratton
Originator: Adrian Green
Publication_Date: 2014
Title:
YSI_MERGE.SHP: Point shapefile containing valid YSI 600 XLM multi-parameter sonde data (temperature, conductivity, and salinity) in Indian River Bay, Delaware, collected on U.S. Geological Survey Field Activity 2010-006-FA in April 2010 (Geographic, WGS 84)
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1039
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://pubs.usgs.gov/of/2011/1039/data/ysi_sensor/ysi_Merge.zip>
Online_Linkage:
<http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html>
Larger_Work_Citation:
Citation_Information:
Originator: V.A. Cross
Originator: J.F. Bratton
Originator: H.A. Michael
Originator: K.D. Kroeger
Originator: A. Green
Originator: E. Bergeron
Publication_Date: 2014
Title:
Continuous Resistivity Profiling and Seismic-Reflection Data Collected in April 2010 from Indian River Bay, Delaware
Edition: 1
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1039
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2011/1039/>
Online_Linkage: <http://dx.doi.org/10.3133/ofr20111039>
Description:
Abstract:
A geophysical survey to delineate the fresh-saline groundwater interface and associated sub-bottom sedimentary structures beneath Indian River Bay, Delaware, was carried out in April 2010. This included surveying at higher spatial resolution in the vicinity of a study site at Holts Landing, where intensive onshore and offshore studies were subsequently completed. The total length of continuous resistivity profiling (CRP) survey lines was 145 kilometers (km), with 36 km of chirp seismic lines surveyed around the perimeter of the bay. Medium-resolution CRP surveying was performed using a 50-meter streamer in a bay-wide grid. Results of the surveying and data inversion showed the presence of many buried paleochannels beneath Indian River Bay that generally extended perpendicular from the shoreline in areas of modern tributaries, tidal creeks, and marshes. An especially wide and deep paleochannel system was imaged in the southeastern part of the bay near White Creek. Many paleochannels also had high-resistivity anomalies corresponding to low-salinity groundwater plumes associated with them, likely due to the presence of fine-grained estuarine mud and peats in the channel fills that act as submarine confining units. Where present, these units allow plumes of low-salinity groundwater that was recharged onshore to move beyond the shoreline, creating a complex fresh-saline groundwater interface in the subsurface. The properties of this interface are important considerations in construction of accurate coastal groundwater flow models. These models are required to help predict how nutrient-rich groundwater, recharged in agricultural watersheds such as this one, makes its way into coastal bays and impacts surface water quality and estuarine ecosystems. For more information on the survey conducted for this project, see <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-006-FA>.
Purpose:
This point shapefile provides geographic locations and sensor data from the YSI 600 XLM multi-parameter sonde that have been determined to be valid. The YSI sensor measures temperature, conductivity, and salinity.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100413
Ending_Date: 20100415
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -75.203217
East_Bounding_Coordinate: -75.063050
North_Bounding_Coordinate: 38.619333
South_Bounding_Coordinate: 38.566450
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Field Activity Number 2010-006-FA
Theme_Keyword: Info Bank ID K-6-10-DL
Theme_Keyword: R/V Knob
Theme_Keyword: YSI 600 XLM
Theme_Keyword: temperature
Theme_Keyword: conductivity
Theme_Keyword: salinity
Theme_Keyword: poin shapefile
Theme_Keyword: Open-file Report 2011-1039
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: North Atlantic Ocean
Place_Keyword: United States
Place_Keyword: Delaware
Place_Keyword: Indian River Bay
Place_Keyword: Indian River Inlet
Place_Keyword: Holts Landing
Place_Keyword: Piney Neck
Place_Keyword: Rosedale Beach
Access_Constraints: None.
Use_Constraints:
The public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095
Data_Quality_Information:
Logical_Consistency_Report:
A selection process was performed by two USGS scientist to determine the valid data values acquired by the sensor. This selection process was largely subjective.
Completeness_Report:
All YSI values deemed to be valid that have associated navigation fixes from April 13, 2010 are contained in this data file.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The navigation system used was a Lowrance 480M with an LGC-2000 Global Positioning System (GPS) antenna. The antenna was located directly above the fathometer transducer mount point, but offset to the starboard by 2 meters from the resistivity streamer tow point. The YSI meter was mounted just behind the fathometer. GPS data are assumed to be accurate within 10 meters on this survey.
Lineage:
Source_Information:
Source_Contribution:
The YSI 600XLM was mounted just behind the fathometer transducer on the starboard side of the boat. This placed the instrument almost directly below the navigation antenna. On the first three days of data collection (April 12-14) this mount location was 17.6 m forward of the first electrode in the continuous resistivity profiling streamer array. On the fourth day (April 15), the GPS/YSI package was moved 1.6 meters toward the stern. Although data collection was continuous, recording a reading every minute, the values are fairly inconsistent. This inconsistency is possibly due to the YSI cavitating at speed, or too much air in the sensor cavity from fast moving water.
Process_Step:
Process_Description:
First, the raw YSI data were separated by day of acquisition into separate worksheets in Microsoft Excel 2003. Then a new column was added to reflect UTC time by adding 4 hours to the YSI time (local time). This process step, along with all subsequent process steps, was performed by the same person: VeeAnn A. Cross.
Process_Date: 201005
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
The GPS HYPACK navigation for each day of data collection is already in a comma-delimited text file from other processing (see metadata for the various jd***bestdepth shapefiles available at <http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html>). These files simply need to be reformatted for use with the YSI data so that the Excel command VLOOKUP can be used with the lookup column being time. The idea is to carry over the latitude and longitude values from the GPS file when the YSI time is the same as the GPS time. HYPACK software usually recorded a navigation fix every second. There were times when HYPACK was off, and that will be discussed later. VLOOKUP has two methods of operation: one when the match is exact, and the other is approximate match. For some reason, using the exact match did not work well. Times that were exact matches still produced NA values. Therefore, the approximate match method was used. The approximate match method find the largest value less than or equal to the match value. Manual editing was done in Excel to remove the latitude longitude values that carried over from HYPACK navigation gaps.
Process_Date: 201006
Process_Step:
Process_Description:
Once the VLOOKUP and editing were complete, the values were copied to a new worksheet to be exported from Excel. In order to determine valid YSI values, John Bratton wanted to not only look at the values in the spreadsheet, but also look at the spatial distribution of the data point and their values. The worksheet was exported from Excel as a comma-delimited text file and added to ArcMap 9.2 as an event theme by Tools - AddXY data, projection as geographic, WGS84. The event theme was then converted to a shapefile by right mouse click - data - export. A shapefile for each day of data collection was generated.
Process_Date: 201006
Source_Produced_Citation_Abbreviation: apr13_ysi_withnav.shp
Source_Produced_Citation_Abbreviation: apr14_ysi_withnav.shp
Source_Produced_Citation_Abbreviation: apr15_ysi_withnav.shp
Process_Step:
Process_Description:
Based on the spatial distribution of the YSI data values, and visual inspection of the data files in the Excel spreadsheet, John Bratton made a final worksheet containing the YSI values he considered valid. Once these values were selected, new shapefiles were generated containing only the accepted YSI values. This meant a repeat of the VLOOKUP procedures marrying the HYPACK navigation fixes with the valid YSI values, export from Excel, added as an event theme to ArcMap, and then exported as a shapefile for April 13, 14, and 15.
Source_Used_Citation_Abbreviation: apr13_ysi_withnav.shp
Source_Used_Citation_Abbreviation: apr14_ysi_withnav.shp
Source_Used_Citation_Abbreviation: apr15_ysi_withnav.shp
Source_Used_Citation_Abbreviation: Excel spreadsheet
Process_Date: 201007
Source_Produced_Citation_Abbreviation: cull_4_13_exp.shp
Source_Produced_Citation_Abbreviation: cull_4_14_exp.shp
Source_Produced_Citation_Abbreviation: cull_4_15_exp.shp
Process_Step:
Process_Description:
The filtered (culled) YSI shapefiles do not have the measurements in the units I need. So within ArcMap 9.2, using VAC Extras, version 2.1 (an extension written by VeeAnn Cross in Woods Hole), the resistivity values in ohm-m were calculated. VACExtras - Resistivity - Calc Resistivity. The calculation requires a temperature field in degrees Celsius and a salinity field - both of which are present in the YSI culled shapefile. The results are put in a new attribute called resval.
Source_Used_Citation_Abbreviation: cull_4_13_exp.shp
Source_Used_Citation_Abbreviation: cull_4_14_exp.shp
Source_Used_Citation_Abbreviation: cull_4_15_exp.shp
Process_Date: 201007
Source_Produced_Citation_Abbreviation: cull_4_13_exp.shp
Source_Produced_Citation_Abbreviation: cull_4_14_exp.shp
Source_Produced_Citation_Abbreviation: cull_4_15_exp.shp
Process_Step:
Process_Description:
In ArcMap 9.2 outlier points (those YSI points with locations plotting outside the study are) were deleted. These outliers were a result of no corresponding GPS coordinates, leading to latitude and longitude values of 0. The shapefiles were renamed to reflect these edits.
Source_Used_Citation_Abbreviation: cull_4_13_exp.shp
Source_Used_Citation_Abbreviation: cull_4_14_exp.shp
Source_Used_Citation_Abbreviation: cull_4_15_exp.shp
Process_Date: 201106
Source_Produced_Citation_Abbreviation: ysi_4_13_cln.shp
Source_Produced_Citation_Abbreviation: ysi_4_14_cln.shp
Source_Produced_Citation_Abbreviation: ysi_4_15_cln.shp
Process_Step:
Process_Description:
In ArcMap 9.2 the individual YSI shapefiles were merged into a single shapefile using ArcToolbox - Data Management Tools - General -Merge. Because the individual shapefiles all have the same attributes, nothing needed to be done to the field mapping. The output shapefile was ysi_Merge.shp.
Source_Used_Citation_Abbreviation: ysi_4_13_cln.shp
Source_Used_Citation_Abbreviation: ysi_4_14_cln.shp
Source_Used_Citation_Abbreviation: ysi_4_15_cln.shp
Process_Date: 201106
Source_Produced_Citation_Abbreviation: ysi_Merge.shp
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 672
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: ysi_Merge
Entity_Type_Definition: ESRI point shapefile
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: ysi_date
Attribute_Definition: The date the YSI data were collected in the format M/DD/YYYY
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Unrepresentable_Domain: Characters set.
Attribute:
Attribute_Label: ysi_time
Attribute_Definition:
The time the YSI data point was logged in local time in the format HH:MM:SS.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Unrepresentable_Domain: Characters set.
Attribute:
Attribute_Label: utc_time
Attribute_Definition:
The UTC time corresponding to the acquisition of the YSI point in the format HH:MM:SS.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Unrepresentable_Domain: Characters set.
Attribute:
Attribute_Label: temp_c
Attribute_Definition:
Water temperature value in degrees Celsius recorded by the YSI sensor.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9.76
Range_Domain_Maximum: 19.78
Attribute_Units_of_Measure: degrees Celsius
Attribute:
Attribute_Label: mspcm
Attribute_Definition:
Water conductivity measured by the YSI sensor in milli-Seiemens per centimeter.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 18.08
Range_Domain_Maximum: 36.08
Attribute_Units_of_Measure: milli-Siemens per centimeter
Attribute:
Attribute_Label: sal_ppt
Attribute_Definition:
Water salinity measured by the YSI sensor in parts per thousand.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 12.62
Range_Domain_Maximum: 27.63
Attribute_Units_of_Measure: parts per thousand
Attribute:
Attribute_Label: comments
Attribute_Definition: Comments added to the original Excel spreadsheet.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Unrepresentable_Domain: Characters set.
Attribute:
Attribute_Label: longitude
Attribute_Definition: Longitude coordinate of the point (WGS84).
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -75.203217
Range_Domain_Maximum: -75.06305
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: latitude
Attribute_Definition: Latitude coordinate of the point (WGS84).
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 38.56645
Range_Domain_Maximum: 38.619333
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: Resval
Attribute_Definition: Calculated resistivity value of the point.
Attribute_Definition_Source: Software generated.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.2771
Range_Domain_Maximum: 0.5528
Attribute_Units_of_Measure: ohm-m
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: ArcGIS 9.2
Format_Information_Content:
This WinZip (v. 14) file contains the point shapefile as well as the associated metadata files.
Transfer_Size: 0.08
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://pubs.usgs.gov/of/2011/1039/data/ysi_sensor/ysi_Merge.zip>
Network_Resource_Name:
<http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html>
Network_Resource_Name: <http://dx.doi.org/10.3133/ofr20111039>
Fees: None.
Technical_Prerequisites:
This zip file contains data available in Esri point shapefile format. The user must have software capable of uncompressing the zip file and reading/displaying the shapefile.
Metadata_Reference_Information:
Metadata_Date: 20140630
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Mon Jun 30 16:35:45 2014