Oceanographic CTD 2d Profiles from Seabird Instruments
Table of Contents
IDENTIFICATION_INFORMATION
Citation:
Citation_Information:
Originator: Philip N. Hooge
Originator: Elizabeth Ross Hooge
Publication_Date: 20001201
Title: Oceanographic CTD 2d Profiles from Seabird Instruments
Edition: 1
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Glacier Bay National Park, Gustavus, Alaska
Publisher: USGS Alaska Biological Science Center, Glacier Bay National Park
Other_Citation_Details:
Online_Linkage: www.absc.usgs.gov/glba/oceanography/index.htm
Larger_Work_Citation:
Citation_Information:
Originator: P. Hooge
Publication_Date: 20001201
Title: Fjord Oceanography of Glacier Bay
Publication_Information:
Publication_Place: Glacier Bay National Park, Gustavus, Alaska
Publisher: USGS Alaska Biological Science Center, Glacier Bay National Park
Online_Linkage: www.absc.usgs.gov/glba/oceanography/index.htm
Description:
Abstract:
Oceanography describes one of the most fundamental physical
aspects of a marine ecosystem. Most of the resource and
research issues in Glacier Bay are marine in whole or part.
Glacier Bay exhibits a highly complex oceanographic regime
within a small area. An understanding of many of the
resource and research issues in Glacier Bay will not be
possible without an understanding of the underlying
oceanographic processes causing the large spatial and
annual variation.
The Bay is a recently (300 years ago) deglaciated fjord
located within Glacier Bay National Park in Southeast
Alaska. Glacier Bay is a fjord estuarine system that has
multiple sills. These sills are often associated with
contractions and are backed by very deep basins with
tidewater glaciers and many streams. Glacier Bay
experiences a large amount of runoff, high sedimentation,
and large tidal variations. Melting occurs year-round,
which fuels the estuarine circulation even through the
winter. This runoff, and the presence of the tidewater
glaciers makes the bay extremely cold. There are many
small- and large-scale mixing and upwelling zones at sills,
glacial faces, and streams. The complex topography and
strong currents lead to highly variable salinity,
temperature, sediment, productivity, light penetration, and
current patterns within a small area. This complexity
defies simple characterization or modeling based on other
areas in Southeast Alaska. While several oceanographic
studies have been conducted in Glacier Bay, these studies
are contradictory and were of short duration and limited
coverage, missing much of the spatial, seasonal and annual
variation. In addition, some assumptions based on past
studies have been contradicted by recent results (Hooge, et
al. 2000) . The constantly changing nature of the Bay may
contribute to contradictions among past studies and between
recent and historical results.
Because of the importance of oceanography to understanding
critical resource and research problems, the complexity of
the Bay's oceanographic system, as well as the limited and
contradictory prior work, it is imperative that a
sustained, rigorous, and complete monitoring program be
developed and implemented.
Purpose:
The Glacier Bay oceanographic project was designed for the
acquisition, analysis, and modeling of fjord-estuarine
oceanographic data in Glacier Bay, Alaska. Located along
the glacial chronosequence in the Bay, 24 stations are
profiled multiple times each year in order to acquire
measurements of temperature, salinity, productivity
(phytoplankton biomass through chlorophyll-a), sediment
load, and light penetration throughout the water column at
1-meter depth intervals from the surface to near the sea
floor. Duplicate samples are taken at slack and peak
current flow in those areas where water column
characteristics are strongly affected by tidal stage. Each
survey data set is integrated into a Geographic Information
System environment utilizing the Oceanographic Analyst
Extension (OAE), which allows viewing and manipulation of
3- and 4-D oceanographic datasets within ESRI's ArcView GIS.
Supplemental_Information:
This database supplments the 3-D ProfileMaster shapefile
and provides 2-D summary information in order to integrate
the cast profile data with other 2-D data sets.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1992
Ending_Date: present
Currentness_Reference: Current
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -136.9230
East_Bounding_Coordinate: -135.8750
North_Bounding_Coordinate: 59.0920
South_Bounding_Coordinate: 58.3177
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Backscatterance
Theme_Keyword: Chlorophyll-a
Theme_Keyword: Contraction
Theme_Keyword: CTD
Theme_Keyword: Density
Theme_Keyword: Estuarine
Theme_Keyword: Estuary
Theme_Keyword: Fjord
Theme_Keyword: Flocculation
Theme_Keyword: Glacier Bay
Theme_Keyword: Halocline
Theme_Keyword: Hydraulic Control
Theme_Keyword: Marine Ecosystem
Theme_Keyword: Mixed Layer
Theme_Keyword: OBS
Theme_Keyword: Oceanography
Theme_Keyword: PAR
Theme_Keyword: Photic Depth
Theme_Keyword: Photic Zone
Theme_Keyword: Photosynthetically Active Radiation
Theme_Keyword: Primary Production
Theme_Keyword: Primary Productivity
Theme_Keyword: Pycnocline
Theme_Keyword: Salinity
Theme_Keyword: Sedimentation
Theme_Keyword: Sigma-T
Theme_Keyword: Sill
Theme_Keyword: Temperature
Theme_Keyword: Thermocline
Theme_Keyword: Tidewater Glacier
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Alaska
Place_Keyword: Cross Sound
Place_Keyword: Glacier Bay
Place_Keyword: Gulf of Alaska
Place_Keyword: Gustavus
Place_Keyword: High Lattitude
Place_Keyword: Icy Strait
Place_Keyword: Inside Passage
Place_Keyword: North Pacific
Place_Keyword: Norther Lattitude
Place_Keyword: Southeast Alaska
Place_Keyword: Sub-Arctic
Access_Constraints:
Use_Constraints:
Please contact before publication and cite P.N. Hooge and
E.R. Hooge. 2000. Glacier Bay Fjord Oceanography Dataset.
USGS, Alaska Biological Science Center.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Alaska Biological Science Center
Contact_Person: Philip N. Hooge
Contact_Position: Research Population Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: P.O. Box 140, Glacier Bay National Park
City: Gustavus
State_or_Province: AK
Postal_Code: 99826
Country: USA
Contact_Voice_Telephone: 907-697-2637
Contact_Facsimile_Telephone: 907-697-2654
Contact_Electronic_Mail_Address: philip_hooge@usgs.gov
Hours_of_Service: 10:00-18:00 Alaska Time
Native_Data_Set_Environment:
ArcView version 3.2 shapefile format
k:\eco_data\data\glba\ocean\data\processed\2000\200005oceanography\ctdmaster.shp
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DATA_QUALITY_INFORMATION
Attribute_Accuracy:
Attribute_Accuracy_Report:
Accuracy varies with the different oceanographic variables
locations, and years. However the insturments were
calibrated each year, values checked for errors, and all
observationally deviant data removed. See the oceanographic
protocol manual and report at
www.absc.usgs.gov/glba/oceanography/index.htm for details
on the way values were recorded and accuracy issues.
Logical_Consistency_Report:
This data is logically consistent.
Completeness_Report:
These data are updated after each survey which is occurs
appromately five times of a year.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
4 meters absolute accuracy using military crypto code
receivers. Approximately 100 meter aquisition of repeated
station position.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
All positions are at sea level and these data do not have a
vertical component.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Philip N. Hooge
Publication_Date: Varies
Title: Seabird Instruments CNV files which are Georeferenced
Edition: Varies with software and insturment
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Glacier Bay National Park, Gustavus, Alaska
Publisher: USGS Alaska Biological Science Center, Glacier Bay National Park
Other_Citation_Details:
Online_Linkage: www.absc.usgs.gov/glba/oceanography/index.htm
Larger_Work_Citation:
Citation_Information:
Originator: P. Hooge
Publication_Date: Varies
Title: Fjord Oceanography of Glacier Bay
Publication_Information:
Publication_Place: Glacier Bay National Park, Gustavus, Alaska
Publisher: USGS Alaska Biological Science Center, Glacier Bay National Park
Online_Linkage: www.absc.usgs.gov/glba/oceanography/index.htm
Source_Scale_Denominator:
Type_of_Source_Media: Digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1992
Ending_Date: present
Source_Currentness_Reference: Current
Source_Citation_Abbreviation:
Source_Contribution:
The Seabird Instrument files are the primary part of the
georeferenced CTD profiles. Locational and tide information
is added as well as some locationally dependent calibration coeficients.
Process_Step:
Process_Description:
Processing steps of this data are highly detailed and
involved. These processing steps involve both detailed
manipulation of the instrument derived variables as well as
extensive parsing, databasing, georeferencing, creation of
2, 3 and 4-D spatial datasets, and then spatial and
database joining and aggregation. These processes are
described in detail in the Fjord Oceanographic Monitoring
Handbook available in pdf form at wwww.absc.usgs.gov/glba/oceanography/index.htm
Source_Used_Citation_Abbreviation:
Process_Date: 1992 to current; each survey processed as obtained
Source_Produced_Citation_Abbreviation:
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: USGS Alaska Biological Science Center
Contact_Person: Philip N. Hooge
Contact_Position: Research Population Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: P.O. Box 140, Glacier Bay National Park
City: Gustavus
State_or_Province: AK
Postal_Code: 99826
Country: USA
Contact_Voice_Telephone: 907-697-2637
Contact_Facsimile_Telephone: 907-697-2654
Contact_Electronic_Mail_Address: philip_hooge@usgs.gov
Hours_of_Service: 10:00-18:00 Alaska Time
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SPATIAL_DATA_ORGANIZATION_INFORMATION
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 25
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SPATIAL_REFERENCE_INFORMATION
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 8
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -135.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1 meter
Ordinate_Resolution: 1 meter
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4000000
Denominator_of_Flattening_Ratio: 294.98
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ENTITY_AND_ATTRIBUTE_INFORMATION
Detailed_Description:
Entity_Type:
Entity_Type_Label: ctdmaster.dbf
Entity_Type_Definition: Shapefile Attribute Table
Entity_Type_Definition_Source: None
Attribute:
Attribute_Label: Cast
Attribute_Definition: Cast Name as a composite of instrument id, dump number and
cast number
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Location
Attribute_Definition: Oceanographic Station
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Date
Attribute_Definition: The day the cast was taken
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Date Field
Attribute:
Attribute_Label: Time
Attribute_Definition: The specific time the instument was lowered
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Header
Attribute_Definition: All the Seabird header information as a comment
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Xaxis
Attribute_Definition: The X coordinate in Nad27
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 389783
Range_Domain_Maximum: 448751
Attribute:
Attribute_Label: Yaxis
Attribute_Definition: The Y coodinate in Nad27
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.46541e+006
Range_Domain_Maximum: 6.55043e+006
Attribute:
Attribute_Label: Timetolow
Attribute_Definition: Time to low tide
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99999
Range_Domain_Maximum: 378
Attribute:
Attribute_Label: Timetohi
Attribute_Definition: THe number of minutes to high tide (as a positive or
negative number)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99999
Range_Domain_Maximum: 0
Attribute:
Attribute_Label: Hiheight
Attribute_Definition: The height of the high tide (in meters)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99999
Range_Domain_Maximum: 12.3
Attribute:
Attribute_Label: Lowheight
Attribute_Definition: The height of the nearest low tide (in meters)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99999
Range_Domain_Maximum: 0.2
Attribute:
Attribute_Label: Count_
Attribute_Definition: Number of depth bins used in statistics
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 47
Range_Domain_Maximum: 303
Attribute:
Attribute_Label: Min_Deps_
Attribute_Definition: Minimum Depth of the cast
Attribute_Definition_Source: The deepest depth reach on a cast
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -302
Range_Domain_Maximum: -47
Attribute:
Attribute_Label: Max_Deps_
Attribute_Definition: The shallowest depth bin used in summary statistics
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -3
Range_Domain_Maximum: 0
Attribute:
Attribute_Label: Max_Par_
Attribute_Definition: The Maximum values of photosenthetically active radiation
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.791
Range_Domain_Maximum: 1076
Attribute:
Attribute_Label: Min_T068_
Attribute_Definition: The minimum temperature found on a cast
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4.759
Range_Domain_Maximum: 6.372
Attribute:
Attribute_Label: Max_T068_
Attribute_Definition: The maximum temperature found on a cast
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5.068
Range_Domain_Maximum: 8.922
Attribute:
Attribute_Label: Min_Wetsta
Attribute_Definition: The minimum values of chlorophyll-a in ug/l
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -14.853
Range_Domain_Maximum: 4.474
Attribute:
Attribute_Label: Max_Wetsta
Attribute_Definition: THe maximum value of chlorophyll-a found on a cast (in ug/l)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.431
Range_Domain_Maximum: 64.705
Attribute:
Attribute_Label: Min_OBS_mg
Attribute_Definition: Minimum value of sediment found on a cast (in mg/l)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 18
Attribute:
Attribute_Label: Max_OBS_mg
Attribute_Definition: The maximum value of sediment found on a cast (in mg/l)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 14
Range_Domain_Maximum: 51
Attribute:
Attribute_Label: Sum_OBS_mg
Attribute_Definition: The integrated amount of sediment found throughout the cast
(in g/meter2)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 804
Range_Domain_Maximum: 5118
Attribute:
Attribute_Label: Min_Sal00_
Attribute_Definition: The minimum value of salinity found in the cast (in ppt)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 23.618
Range_Domain_Maximum: 31.475
Attribute:
Attribute_Label: Max_Sal00_
Attribute_Definition: The maximum value of salinity found in the cast (in ppt)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 30.984
Range_Domain_Maximum: 31.774
Attribute:
Attribute_Label: Min_Sigma_
Attribute_Definition: Minumim density values found in the cast (in sigma-t values)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 18.262
Range_Domain_Maximum: 24.742
Attribute:
Attribute_Label: Max_Sigma_
Attribute_Definition: The maximum sigma-t values found in the cast
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 24.505
Range_Domain_Maximum: 25.065
Attribute:
Attribute_Label: Photicdep1
Attribute_Definition: The depth to which only 1 percent of the surface of light penetrates
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -33
Range_Domain_Maximum: -2
Attribute:
Attribute_Label: Zsum_wetst
Attribute_Definition: The integrated amount of chlorophyll-a throughout the cast
in mg/meter2
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 118.842
Range_Domain_Maximum: 1242.44
Attribute:
Attribute_Label: Dic_photic
Attribute_Definition: The integrated amount of chlorophyll-a throughout the
photic depth portion of the cast in mg/meter2
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.611
Range_Domain_Maximum: 468.237
Attribute:
Attribute_Label: Dic_10m
Attribute_Definition: The integrated amount of chlorophyll-a throughout the
photic the upper 10 m portion of the cast in mg/meter2
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5.525
Range_Domain_Maximum: 356.199
Attribute:
Attribute_Label: Dic_35m
Attribute_Definition: The integrated amount of chlorophyll-a throughout the upper
35 meter portion of the cast in mg/meter2
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 27.154
Range_Domain_Maximum: 834.775
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DISTRIBUTION_INFORMATION
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Alaska Biological Science Center
Contact_Person: Philip N. Hooge
Contact_Position: Research Population Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: P.O. Box 140, Glacier Bay National Park
City: Gustavus
State_or_Province: AK
Postal_Code: 99826
Country: USA
Contact_Voice_Telephone: 907-697-2637
Contact_Facsimile_Telephone: 907-697-2654
Contact_Electronic_Mail_Address: philip_hooge@usgs.gov
Hours_of_Service: 10:00-18:00 Alaska Time
Resource_Description:
CTDMaster Data for Glacier Bay, Alaska
Distribution_Liability:
User must assume to determine the appropriate use of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name:ArcView Point Shape File
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD ROM in Juliet format
Recording_Format:
Compatibility_Information:
Can be used in any vector GIS capable system able to use or
import ArcView Shape Files. The information can also be
accesed from dbf files containing the attribute information
since the XY coordiates are in the table
Fees: None
Ordering_Instructions:
Contact: Philip N. Hooge PhD at philip_hooge@usgs.gov or
see www.absc.usgs.gov/glba/oceanography/index.htm for
current ordering or downloading methods.
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METADATA_REFERENCE_INFORMATION
Metadata_Date: 12/6/2000
Metadata_Review_Date: 12/7/2000
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Alaska Biological Science Center
Contact_Person: Philip N. Hooge
Contact_Position: Research Population Ecologist
Contact_Address:
Address_Type: Mailing and physical address
Address: P.O. Box 140, Glacier Bay National Park
City: Gustavus
State_or_Province: AK
Postal_Code: 99826
Country: USA
Contact_Voice_Telephone: 907-697-2637
Contact_Facsimile_Telephone: 907-697-2654
Contact_Electronic_Mail_Address: philip_hooge@usgs.gov
Hours_of_Service: 10:00-18:00 Alaska Time
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
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