Weather at Toolik

Arctic LTER Database

Acceptance and utilization of LTER data requires that:

(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications.
(3) A copy of any resultant publications should be sent to:

Principal Investigator
Ecosystems Center
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543

Older Metadata: Attribute table not in XML (EML) file

Dataset URLs:	METADATA: HTML, Rich Text, XML(EML compliant) DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:	92peodis
Dataset Title:	Daily stage height and discharge data for Oksrukuyik Creek, June 14 - August 26 1992, Arctic LTER 1992.
Investigator 1:
First Name:	B.
Last Name:	Peterson
Address line 1:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Associate Investigators:	USGS/Fairbanks, Nancy Parmentier, Deb Repert
Keywords:	USGS, chart recorder
Abstract:	Daily stage height and discharge data for Oksrukuyik Creek, June 14 - August 26 1992.
Contact:	Arctic LTER Information Manager The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole, MA 02543 Phone (508) 289 7496 Email: arc_im@mbl.edu Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File Name	92peodis
Beginning Date	5/1/1992
End Date	9/1/1992
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: For Archival Use: DATE RECEIVED: 01 November 1992 DATA FILE ENTERED BY: Nancy Parmentier DATA FILE VALIDATION: NAME: Nancy Parmentierman DATE: November 2, 1992



RESEARCH LOCATION:
Geographic Description	The Oksrukuyik Creek crossing at the Dalton Highway. Lat 68 41'13", long 19 05'42", in NE1/2, sec.4, T.9 S., R.13E., on left bank 30 ft downstream from culvert, at mile 297.9 Dalton Hwy, 14 mi south of Pump Station 3, and 16.5 mi upstream from mouth. USGS Hydrologic Unit 19060402.
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
Latitude
Longitude



TAXONOMIC COVERAGE:
Organisms studied

Methods:	Stage height measurements were taken with a Stevens chart recorder at the USGS gauging station, 10 meters downstream of the the Dalton Highway crossing. Discharge measurements were taken by Deb Repert and Nancy Parmentier using a Marsh-McBirney flow meter and a Teledyne-Gurley flow meter at a location 20 meters below the chart recorder. Flow was measured at 20-30 points for each transect. A total of 8 discharge measurements were used to calibrate the rating curves for this year. Notes: This was a particularly difficult year for working up the Oks Creek discharge data. Due to very high flow in September, 1991 the morphology of Oks Creek has changed significantly in the section where we have traditionally taken discharge measurements. This means that last year's rating curve is of little use in calculating this year's discharges. The bank where the chart recorder is located has been severely undercut and has sunk 2.7 feet since August '91. According to USGS surveys this section of bank continued to shift this year, sinking 0.38 feet between mid-June and the end of August. A piece of rebar was placed in the ground near the staff to be used as a reference marker, but proved to be more unstable than the staff. The USGS surveyed the staff 3 times this season to record the shift in the staff; stage height measurements have been corrected accordingly. Two rating curves have been applied for determining this season's discharge. The first rating is for stage heights less than and equal to 18.43 feet and was calculated using 7 discharge measurements taken by Deb Repert and Nancy Parmentier. The second rating curve applies to stage heights greater than 18.43 feet. This was calculated using the 2 highest stage discharge measurements taken by Deb Repert and Nancy Parmentier, along with a very high flow measurement taken by USGS on August 26th. This measurement was made 3/4 mile downstream from the USGS recorder and has a standard error of +/-25%. Stage heights have been kept in feet since all stage measurements this year were made using USGS equipment; comparisons with their data has been made easier by maintaining the same format. The LTER discharge measurements are typically 30% higher than those made by the USGS. It should be noted that LTER measurements made the same day, at the same stage height, using both the Marsh-McBirney And the Teledyne-Gurley meters showed very good correlation between the two meters. In the future it might be informative to have both parties make discharge measurements at the same time and in the same place to help determine the cause of this discrepency. Discharge was calculated for six stage height readings a day, taken at four hour intervals. On several days there is missing stage data. Average stage height for these days is calculated using less than 6 points and therefore is not accurately represented. These days are as follows: June 14 No stage for 200 AST Average would be higher June 30 No stage for 1800 and 2200 AST Average would be higher July 1 No stage for 200 and 600 AST Average would be lower Aug 26 No stage for 1800 and 2200 AST Average would be higher Sampling Description. None

Data Table

Variable    Variable descrip.            Precis./Units  Coded   Missing
(Y/N)   Values
SITE        site of measurement                           y
D/D         distance from 1990 dripper     0.01 km        n
DATE        Date                           DDMMMYY        n
DAY         Julian day                     1 day          n
STAGE       stage height                   feet           n      -9999
DISCHARGE   Calc from USGS stage heights   m3/s           n      -9999
(12) CALCULATIONS
Variable        Formula
Discharge          A). For stage heights of 18.43 feet or less:
Discharge = exp(a+bexp(x))
a=-2.4379247
b=3.5955812E-08
x=stage
B). For stage heights greater than 18.43 feet:
Discharge =(a+bx^3)
a=-53.964473
b=0.0091870784
x=stage