Borehole¶

`Borehole` ¶

Bases: BaseModel

An Antarctic borehole with location, metadata, and data URLs.

Attributes:

Name	Type	Description
`name`	`str`	Short identifier for the borehole.
`location`	`str`	Human-readable location description.
`region`	`Literal['East', 'West']`	East or West Antarctica.
`start_year`	`int \| None`	First year the borehole was drilled, or None if unknown.
`end_year`	`int \| None`	Last year the borehole was drilled, or None if unknown.
`type`	`str`	Borehole type descriptor.
`lat`	`float`	Latitude in decimal degrees.
`lon`	`float`	Longitude in decimal degrees.
`ice_thickness`	`float`	Ice thickness at the borehole in meters.
`drilled_depth`	`float`	Depth drilled in meters.
`original_publication`	`str`	Citation for the original data publication.
`has_temperature`	`Annotated[bool, BeforeValidator(parse_bool)]`	Whether temperature data is available.
`has_chemistry`	`Annotated[bool, BeforeValidator(parse_bool)]`	Whether chemistry data is available.
`has_conductivity`	`Annotated[bool, BeforeValidator(parse_bool)]`	Whether conductivity data is available.
`has_grain_size`	`Annotated[bool, BeforeValidator(parse_bool)]`	Whether grain size data is available.
`temperature_data_url`	`str \| None`	URL to the temperature CSV, if available.
`chemistry_data_url`	`str \| None`	URL to the chemistry CSV, if available.
`grainsize_data_url`	`str \| None`	URL to the grain size CSV, if available.

Parses borehole locations from CSV text and attaches data URLs.

Parameters:

Name	Type	Description	Default
`text`	`str`	Raw CSV content with borehole location data.	required
`client`	`Client \| None`	Optional client for fetching data URLs. Creates a default client if not provided.	`None`

Returns:

Type	Description
`list[Borehole]`	A list of Borehole instances with data URLs populated.

Converts this borehole to a GeoJSON Feature.

Returns:

Type	Description
`Feature`	A GeoJSON Feature with a Point geometry and borehole properties.

Converts a list of boreholes to a GeoJSON FeatureCollection.

Parameters:

Name	Type	Description	Default
`boreholes`	`list[Borehole]`	The boreholes to convert.	required

Returns:

Type	Description
`FeatureCollection`	A GeoJSON FeatureCollection with one Point feature per borehole.

Converts this borehole's location to a GeoJSON Point.

Returns:

Type	Description
`Point`	A GeoJSON Point at the borehole's longitude and latitude.

Parses a value to bool, treating "NaN" as False.

Parameters:

Name	Type	Description	Default
`value`	`Any`	The value to parse.	required

Returns:

Type	Description
`bool`	False if the value is `"NaN"`, otherwise `bool(value)`.