{"id": "card_floor_hydrology", "kind": "note", "title": "Hydrology — the water cycle and the flow of rivers", "body": "River discharge is velocity times cross-section (Q = v A); only 2.5 percent of Earth water is fresh. Pillars rest on earth science (basins and the cycle), chemistry (water the solvent) and meteorology (precipitation). The stick (stick_hydrology_the_water_cycle_and_the_flow_of_rivers) seals a discharge and the freshwater percentage (tools/seed_hydrology.py).", "source": {"label": "Narrow Highway — hydrology", "url": "", "authority_tier": "engine_derived", "ref": "stick_hydrology_the_water_cycle_and_the_flow_of_rivers"}, "shelf": "codex", "box": "hydrology", "bands": ["floor", "hydrology", "one map"], "subject": "Hydrology — the water cycle and the flow of rivers", "connections": [{"to_card_id": "card_hydrology_flow", "relationship": "has_part", "evidence": "a pillar (Flow - discharge and the continuity equation)"}, {"to_card_id": "card_hydrology_the_solvent", "relationship": "has_part", "evidence": "a pillar (Water the solvent)"}, {"to_card_id": "card_hydrology_the_cycle", "relationship": "has_part", "evidence": "a pillar (The cycle - precipitation and runoff)"}, {"to_card_id": "card_k_floor_of_discovery", "relationship": "part_of", "evidence": "water in motion on the one map, rooted in the Floor of Discovery"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.hydrology", "facets": {"subject": ["floor", "one map"]}, "presentation": {"glyph": "•", "kind_label": "hydrology", "by": "Narrow Highway — hydrology", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_hydrology_flow", "title": "Flow - discharge and the continuity equation", "relationship": "has part", "why": "a pillar (Flow - discharge and the continuity equation)", "href": "/card/card_hydrology_flow", "resolved": true}, {"id": "card_hydrology_the_solvent", "title": "Water the solvent", "relationship": "has part", "why": "a pillar (Water the solvent)", "href": "/card/card_hydrology_the_solvent", "resolved": true}, {"id": "card_hydrology_the_cycle", "title": "The cycle - precipitation and runoff", "relationship": "has part", "why": "a pillar (The cycle - precipitation and runoff)", "href": "/card/card_hydrology_the_cycle", "resolved": true}, {"id": "card_k_floor_of_discovery", "title": "The Floor of Discovery — one floor, and by its design the fear of God", "relationship": "part of", "why": "water in motion on the one map, rooted in the Floor of Discovery", "href": "/card/card_k_floor_of_discovery", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_floor_hydrology", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_floor_hydrology"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}