IHFC Global Heat Flow Database - Data Structure | Metadata | Quality Code
Use the videos below to get an quick introduction into the data and meta data structure and the quality scheme
of the Global Heat Flow Database of the International Heat Flow Commission (IHFC).
The data structure explained
Core Metadata Elements of the Database
A key feature of the portal is the inclusion of persistent identifiers to the machine-readable heat flow metadata that support citability and ensure traceability and data integration,:
DOI - Digital Object Identifier
Assign DOI (Digital Object Identifier) to newly submitted heat flow data and regular publications of the entire database content to ensure their long-term citability and accessibility, together with the provision of rich metadata for data discovery.
ORCID - Open Researcher and Contributor ID
ORCID (Open Researcher and Contributor ID) are used to uniquely identify researchers contributing to the database.
IGSN - International Generic Sample Number
The IGSN (International Generic Sample Number) links datasets and publications to the physical samples on which the measurements were performed.
ROR - Research Organization Registry
The ROR (Research Organization Registry) is a community-led registry of open persistent identifiers for research organizations.
Data and Metadata Structure
The IHFC database structure shows associated data fields for the parent and child level [Level] relevant for heat flow density determinations [Domains] from boreholes and mines (B) and for shallow probe-sensing data (S). Database fields [Obligation] are classified as mandatory (M), recommended (R), or optional (O). The relevance for the quality evaluation [Quality] is displayed for the U-score (U), the M-score (M), and the perturbation effects (P).
| ID | Field name | Category | Domain | Obligation | Quality | Level |
|---|---|---|---|---|---|---|
| P01 | B,S | M | U-score (B,S) | Parent | ||
| P02 | Heat-flow uncertainty | B,S | M | U-score (B,S) | Parent | |
| P03 | Site name | B,S | M | Parent | ||
| P04 | Latitude (Geographical) | B,S | M | Parent | ||
| P05 | Longitude (Geographical) | B,S | M | Parent | ||
| P06 | Elevation (Geographical) | B,S | M | M-score ( S) | Parent | |
| P07 | Basic geographical environment | B,S | M | Parent | ||
| P08 | General comments parent level | B,S | R | Parent | ||
| P09 | Flag heat production of the overburden | B,S | R | Parent | ||
| P10 | Total measured depth | B | R | Parent | ||
| P11 | Total true vertical depth | B | R | Parent | ||
| P12 | Type of exploration method | B | M | Parent | ||
| P13 | Original exploration purpose | B | R | Parent | ||
| C01 | Heat flow | B,S | M | U-score (B,S) | Child | |
| C02 | Heat-flow uncertainty child | Heat flow | B,S | M | U-score (B,S) | Child |
| C03 | Heat-flow method | Heat flow | B,S | M | Child | |
| C04 | Heat-flow interval top | Heat flow | B,S | M | M-score (B, S) | Child |
| C05 | Heat-flow interval bottom | Heat flow | B | M | M-score (B) | Child |
| C06 | Penetration depth | Heat flow | S | M | M-score (S) | Child |
| C07 | Primary publication reference | Meta data | B,S | M | Child | |
| C08 | Primary data reference | Meta data | B,S | R | Child | |
| C09 | Relevant child | Meta data | B,S | M | Child | |
| C10 | General comments child level | Meta data | B,S | R | Child | |
| C11 | Flag in-situ thermal properties | Meta data | B,S | R | Child | |
| C12 | Flag temperature corrections | Meta data | B,S | M | M-score (S) | Child |
| C13 | Flag sedimentation effect | Meta data | B,S | M | P-flag | Child |
| C14 | Flag erosion effect | Meta data | B,S | M | P-flag | Child |
| C15 | Flag topographic effect | Meta data | B,S | M | P-flag | Child |
| C16 | Flag paleoclimatic effect | Meta data | B,S | M | P-flag | Child |
| C17 | Flag surface temperature/bottom water | Meta data | B,S | M | P-flag | Child |
| C18 | Flag convection processes | Meta data | B,S | M | P-flag | Child |
| C19 | Flag heat refraction effect | Meta data | B,S | M | P-flag | Child |
| C20 | Expeditions/Platforms/Ship | Meta data | B,S | R | Child | |
| C21 | Probe type | Meta data | S | R | Child | |
| C22 | Probe length | Meta data | S | R | Child | |
| C23 | Probe tilt | Meta data | S | M | M-score (S) | Child |
| C24 | Bottom-water temperature | Meta data | S | O | Child | |
| C25 | Lithology | Meta data | B,S | O | Child | |
| C26 | Stratigraphic age | Meta data | B,S | O | Child | |
| C27 | Gradient | B,S | M | Child | ||
| C28 | Temperature gradient uncertainty | Gradient | B,S | R | Child | |
| C29 | Mean temperature gradient corrected | Gradient | B,S | O | Child | |
| C30 | Corrected temperature gradient uncertainty | Gradient | B,S | O | Child | |
| C31 | Temperature method (top) | Gradient | B | M | M-score (B) | Child |
| C32 | Temperature method (bottom) | Gradient | B | M | M-score (B) | Child |
| C33 | Shut-in time (top) | Gradient | B | R | Child | |
| C34 | Shut-in time (bottom) | Gradient | B | R | Child | |
| C35 | Temperature correction method (top) | Gradient | B | R | Child | |
| C36 | Temperature correction method (bottom) | Gradient | B | R | Child | |
| C37 | Number of temperature recordings | Gradient | B,S | M | M-score (B, S) | Child |
| C38 | Date of acquisition | Gradient | B,S | M | Child | |
| C39 | Mean thermal conductivity | TC | B,S | M | Child | |
| C40 | Thermal conductivity uncertainty | TC | B,S | R | Child | |
| C41 | Thermal conductivity source | TC | B,S | M | M-score (B, S) | Child |
| C42 | Thermal conductivity location | TC | B,S | M | M-score (B, S) | Child |
| C43 | Thermal conductivity method | TC | B,S | M | M-score (S) | Child |
| C44 | Thermal conductivity saturation | TC | B,S | M | M-score (B, S) | Child |
| C45 | Thermal conductivity pT conditions | TC | B,S | M | M-score (B, S) | Child |
| C46 | Thermal conductivity pT assumed function | TC | B,S | R | Child | |
| C47 | Thermal conductivity number | TC | B,S | M | M-score (B, S) | Child |
| C48 | TC | B,S | R | Child | ||
| C49 | IGSN | TC | B,S | O | Child | |
| A1 | Reviewer name | x | Admin | |||
| A2 | Reviewer comment | x | Admin | |||
| A3 | Review date | x | Admin | |||
| A4 | Country | x | Admin | |||
| A5 | Region | x | Admin | |||
| A6 | Continent | x | Admin | |||
| A7 | Domain | x | Admin | |||
| A8 | Unique entry ID | x | Admin |