RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
1,632 results for "Po Nagar" — page 33 of 82
ZF_3_11 — The Sargasso Sea, Bermuda Triangle, and Western Atlantic Anomalies
The Sargasso Sea is the only "sea" in the world defined not by coastlines but by ocean currents — a roughly elliptical region (~3.1 million km²) in the western North Atlantic, bounded by the Gulf Stream (west), North Atl
ZF_3_02 — Maritime Archaeology: Shipwrecks, Sunken Cities, and Submerged Structures
Maritime archaeology — the study of human interaction with the sea through material remains — has matured from treasure-hunting salvage into a rigorous scientific discipline that applies the same stratigraphic principles
ZF_3_01 — Sea-Level History: Glacial Cycles, Meltwater Pulses, and Coastal Archaeology
Sea level has varied by over 120 meters between glacial and interglacial periods, repeatedly reshaping coastlines, exposing and flooding continental shelves, and creating or destroying land bridges that directed human mi
ZF_3_03 — Ocean Mythology: Sea Serpents, Leviathan, Dragon Kings, and Primordial Waters
Every maritime civilization has produced a rich mythology of the sea — and a striking cross-cultural pattern emerges: serpentine or draconic beings are the most universal ocean guardians and deities. From the Sumerian En
ZF_5_10 — Marine Biotechnology: Blue Pharmacy and Ocean Genetic Resources
The ocean harbors an estimated 2.2 million species (most undescribed) across environments spanning freezing polar waters to superheated hydrothermal vents, anoxic sediments to UV-drenched coral reefs — a staggering diver
ZF_5_13 — Coral Paleontology: Fossil Reefs and Ancient Reef Ecosystems
Reef ecosystems have existed for over 3.5 billion years — beginning with Archean microbial stromatolite mounds — making them among the longest-running biological communities on Earth. Yet the organisms that build reefs h
ZF_5_08 — Coastal Geomorphology: Erosion, Beaches, and Barrier Islands
Coastal geomorphology is the study of landforms at the interface of land and sea — a dynamic zone shaped by the constant interaction of waves, tides, currents, wind, rivers, geology, biology, and increasingly by human ac
ZF_5_07 — Upwelling Systems: Coastal Productivity and Fisheries Foundations
Upwelling — the wind-driven or current-driven ascent of cold, nutrient-rich deep water to the sunlit surface layer — is the foundation of the ocean's most productive ecosystems and the world's most valuable fisheries. Th
ZF_5_11 — Abyssal Plains: Earth's Flattest Terrain and Deep Sedimentation
Abyssal plains — vast, flat expanses of sea floor at depths of 3,000–6,000 meters — are the largest habitat on Earth, covering approximately 54% of the planet's surface (more than all continents combined), yet they remai
ZF_5_15 — Submarine Canyons: Underwater Valleys and Turbidity Currents
Submarine canyons are steep-walled, V-shaped valleys incised into the continental shelf and slope that serve as the primary conduits for transporting sediment, organic matter, and pollutants from shallow coastal waters t
ZF_4_08 — Ocean Acidification Paleoclimate Record
Ocean acidification — the decrease in seawater pH caused by absorption of atmospheric CO₂ — is not only a modern phenomenon but has occurred repeatedly throughout Earth's history, leaving distinctive signals in the geolo
ZF_4_03 — Desalination and Ocean Water Resources
Desalination — the removal of dissolved salts from seawater or brackish water to produce freshwater — has become an increasingly critical technology as global freshwater demand rises and climate change intensifies drough
ZF_4_10 — Coral as Climate Archive — Paleoceanographic Proxies
Coral paleoclimatology uses the geochemical and physical properties of coral skeletons as high-resolution archives of past ocean conditions — providing some of the most detailed tropical climate records available for the
ZF_4_14 — Harmful Algal Blooms: Red Tides, Toxins, and Eutrophication
Harmful algal blooms (HABs) — rapid proliferations of microscopic algae (phytoplankton) or cyanobacteria that produce toxins, deplete oxygen, or otherwise damage marine ecosystems, fisheries, and human health — are incre
ZF_4_05 — Marine Pharmacology and Drug Discovery
Marine pharmacology explores the ocean's vast biodiversity as a source of bioactive compounds for drug development — a field that has yielded several approved drugs and thousands of promising leads since the pioneering w
ZF_4_01 — Ocean Acidification and Marine Chemistry
The global ocean has absorbed approximately 30% of anthropogenic CO₂ emissions since the Industrial Revolution and over 90% of excess heat from the enhanced greenhouse effect, making it the planet's primary climate buffe
ZF_4_09 — Seagrass and Coastal Carbon Sequestration (Blue Carbon)
Blue carbon refers to the carbon captured and stored by coastal and marine ecosystems — primarily seagrass meadows, mangrove forests, and salt marshes — which sequester carbon at rates per unit area far exceeding terrest
ZF_1_09 — Thermohaline Circulation and Ocean Conveyor
The thermohaline circulation (THC) — often called the "global ocean conveyor belt" — is the large-scale, density-driven system of deep ocean currents that redistributes heat, salt, carbon, and nutrients throughout the wo
ZF_1_01 — Physical Oceanography: Thermohaline Circulation, Currents, and ENSO
Physical oceanography studies the motion, properties, and dynamics of the global ocean — a system containing 97% of Earth's water, covering 71% of the surface, and storing over 90% of the excess heat from anthropogenic c
ZF_1_08 — Submarine Volcanism and Island Formation
Submarine volcanism — volcanic activity occurring beneath the ocean surface — accounts for approximately 75% of the Earth's total volcanic output and is the primary mechanism by which new oceanic crust is created, island
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