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GS016 – Simplified metadata

← Back to GS016 detail

Dataset

Database Code
GS016
Title
Coarse woody debris, amount and distribution of in Lookout Creek, Andrews Experimental Forest 1991
Abstract
These data describe the amount and distribution of coarse woody debris on the valley floor of the mainstem of Lookout Creek and characterizing it in relation to river morphology. Data include the number, volume, location, orientation, decay class, and pool formation roles of large wood debris pieces. River morphology is characterized by cross-section data (sampled every 100 m) and in sketch map in the Nakamura and Swanson (1994) publication. This was a one-time sample in 1991 employing simple tape and compass field techniques (Nakamura and Swanson 1994). Data tables cover 1. wood piece measurements (diameter, length, location, decay class) and 2. channel geometry measurements.
Keywords
geomorphology; disturbance; woody debris; coarse woody debris; organic matter; aquatic ecosystems; streams; disturbance; organic matter
Date begin
1991-01-07
Date end
1991-01-09
Principal Investigator
Frederick J. Swanson

Entities

  1. GS01601
  2. GS01602

1. GS01601 - Attribute list

GS01601 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar freetext
FORMAT numeric(1) range 1.0000 1.0000 number
LOGNUM numeric(1) range 1.0000 1692.0000 number
SITENUM numeric(1) range 1.0000 1107.0000 number
ANGLE varchar enum
SECTNUM numeric(1) range 1.0000 85.0000 number
SUSPEND varchar enum
MAINSTRM varchar enum
SIDESTRM varchar enum
ABNDSTRM varchar enum
SANDBAR varchar enum
SIDESLOP varchar enum
TERRACE varchar enum
BOULDER varchar enum
LOG varchar enum
POOL varchar enum
DIAM1 numeric(1.000000) range 2.0000 175.0000 centimeters
DIAM2 numeric(1.000000) range 3.0000 170.0000 centimeters
LENGTH numeric(0.100000) range 0.8000 50.0000 meters
TOTLOGVOL numeric(0.010000) range 0.0100 56.5700 cubic meters
DECOMP varchar enum
MULTFCTR numeric(0.010000) range 0.1000 1.0000 number

2. GS01602 - Attribute list

GS01602 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar freetext
FORMAT numeric(1) range 2.0000 2.0000 number
SECTNUM numeric(1) range 1.0000 85.0000 number
NUMLOGS numeric(1.000000) range 0.0000 126.0000 number
VOLUME numeric(0.010000) range 0.0000 249.4100 cubic meters
AREA1 numeric(0.010000) range 4.6700 35.4500 square centimeters
WIDTH numeric(0.010000) range 9.3400 70.9000 meters
THWGLEN numeric(0.010000) range 4.8300 7.5300 centimeters
SUMTHWG numeric(0.010000) range 10.1200 19.3300 centimeters
DIRTHWG numeric(0.010000) range 8.9900 17.3600 centimeters
LSINUOUS numeric(0.010000) range 0.9900 1.7100 number
GEOMTYPE varchar enum
NUMCHANS varchar enum
BOULDERS varchar enum

Attribute definitions

ABNDSTRM
Is log in abandoned channel
ANGLE
Angle of log to channel (acute angle)
AREA1
Map area of the section (including channels, floodplains, and bars)
BOULDER
Is log touching a boulder > 1 meter in diameter
BOULDERS
Presence of boulders >= 1 meter in diameter
DECOMP
Decomposition code
DIAM1
Diameter of log at one end
DIAM2
Diameter of log at other end (if diam1 = diam2, log was measured in the midd le only)
DIRTHWG
Direct map length from upstream end of preceding section thalweg to downstream end of following section thalweg.
FORMAT
Format
GEOMTYPE
Geomorphic type code
LENGTH
Length of log
LOG
Is log touching another log
LOGNUM
Log number
LSINUOUS
Sinuousity - sumthwg / dirthwg
MAINSTRM
Is log in main channel
MULTFCTR
Multiplication factor to correct volume measurement to reflect the true volu me of the log in the channel area
NUMCHANS
Number of channels code
NUMLOGS
Number of logs in the section
POOL
Did log contribute to pool formation (see nakamura paper for criteria)
SANDBAR
Is log in a sandbar or floodplain
SECTNUM
Number of 50 meter channel section
SIDESLOP
Is log on side slope
SIDESTRM
Is log in side channel
SITENUM
Site number
STCODE
Study code
SUMTHWG
Sum of map length of thalweg in the preceding, current, and following sections.
SUSPEND
Is log totally suspended
TERRACE
Is log on terrace
THWGLEN
Map length of thalweg
TOTLOGVOL
Volume of log computed as (pi * (diam1+diam2)*length/8) * multfctr
VOLUME
Volume of all logs in the section
WIDTH
Average section width

Enumerated domains

Enumerated domain for attribute: ANGLE

Codes for ANGLE
Code Description
1 0 - 45 degrees
No angle measurement taken
4 135 - 180 degrees
2 45 - 90 degrees
3 90 - 135 degrees

Enumerated domain for attribute: SUSPEND

Codes for SUSPEND
Code Description
1 Yes
No

Enumerated domain for attribute: MAINSTRM

Codes for MAINSTRM
Code Description
1 Yes
No

Enumerated domain for attribute: SIDESTRM

Codes for SIDESTRM
Code Description
1 Yes
No

Enumerated domain for attribute: ABNDSTRM

Codes for ABNDSTRM
Code Description
1 Yes
No

Enumerated domain for attribute: SANDBAR

Codes for SANDBAR
Code Description
1 Yes
No

Enumerated domain for attribute: SIDESLOP

Codes for SIDESLOP
Code Description
1 Yes
No

Enumerated domain for attribute: TERRACE

Codes for TERRACE
Code Description
1 Yes
No

Enumerated domain for attribute: BOULDER

Codes for BOULDER
Code Description
1 Yes
No

Enumerated domain for attribute: LOG

Codes for LOG
Code Description
1 Yes
No

Enumerated domain for attribute: POOL

Codes for POOL
Code Description
1 Yes
No

Enumerated domain for attribute: DECOMP

Codes for DECOMP
Code Description
2 Bark partially attatched, log hard
5 Extremely decayed log
1 Bark tight, log hard
3 No bark, log hard
4 No bark, log soft

Enumerated domain for attribute: GEOMTYPE

Codes for GEOMTYPE
Code Description
4 Ave section width < 19.0 meters, sinuousity < 1.09 (type nst in paper)
2 Section width > 19.0 meters, sinuousity < 19.0 meters (type wst in paper)
3 Ave section width < 19.0 meters, sinuousity > 1.09 (type nsi in paper)
1 Section width > 19.0 meters, sinuousity > 1.09 (type wsi in paper)

Enumerated domain for attribute: NUMCHANS

Codes for NUMCHANS
Code Description
S Single channel in section
M Multiple channels in section

Enumerated domain for attribute: BOULDERS

Codes for BOULDERS
Code Description
B Boulders >= 1 meter in diam exist in the section