HF030

Attributes in entity 2: Soil water isotopes		Details
1. DBCODE Definition: FSDB Database Code Domain: enum
2. ENTITY Definition: Entity number Units: number Domain: range (minimum = 2.  maximum = 2.)
3. SAMPLE_DATE Definition: Date of sample collection in the field Units: date as date type Domain: range (minimum = Jun 28 2004  maximum = Aug 31 2005)
4. CAMPAIGN_CODE Definition: Year and month when sampling occurred Domain: enum
5. PLOTID Definition: Permanent veg plot code - samples were collected just outside veg plots Domain: place
6. PLOT Definition: plot number Units: number Domain: range (minimum = 3.  maximum = 39.)
7. DEPTH Definition: Soil depth (cm) Units: centimeters Domain: range (minimum = 10.  maximum = 100.)
8. DELTA2H Definition: Delta-2H isotopic ratio (2H/1H) of the sample (relative to the Vienna Standard Mean Ocean Water (VSMOW)) Units: permil Domain: range (minimum = -110.846  maximum = -47.573)
9. DELTA18O Definition: Delta-18O isotopic ratio (18O/16O) of the sample (relative to the Vienna Standard Mean Ocean Water (VSMOW)) Units: permil Domain: range (minimum = -14.888  maximum = -3.030)
10. D_EXCESS Definition: d-excess = DELTA2H - 8*DELTA18O Units: permil Domain: range (minimum = -37.520  maximum = 13.459)
11. SAMPLE_ID Definition: EPA ISIRF laboratory ID # Domain: freetext