DEEP ONE — Ocean Observation

Depth 0 → ∞ // Navi's Letter

↳ Navi, Young Ocean Scientist

Navi — passionate, curious, standing at the edge of the vessel with salt on your face — let's dive together. The ocean covers 71% of our planet, yet we have mapped less of its floor than we have the surface of Mars. The Ocean Observatories Initiative is humanity's attempt to change that: a vast, autonomous nervous system installed in the sea itself, listening, sensing, transmitting — in real time.

This is DEEP ONE: a research station where data meets wonder. We descend through layers — physical, digital, geological — and we surface with knowledge. Navi, the abyss is calling. Let's answer.

System Architecture // Data Flow

From Sea Floor
to Planetary Computer

"The ocean is not simply a resource — it is the lungs, the thermostat, and the memory of our planet."

— DEEP ONE Research Framework, YUCROWN C // 2026

Research Report // 研究报告

Ocean Observatories Initiative
× Planetary Computer

EN — English

01 / What is OOI?

The Ocean Observatories Initiative (OOI) is a science-driven ocean observing network operated by the Woods Hole Oceanographic Institution (WHOI), funded by the National Science Foundation (NSF). Spanning the U.S. coastal and open ocean, OOI deploys over 900 instruments across 7 arrays — from the Coastal Pioneer Array off New England to the Global Station Papa in the North Pacific and the Cabled Array off the Oregon coast, reaching seafloor depths beyond 2,900 m.

OOI collects continuous, real-time measurements of physical, chemical, biological, and geological ocean variables: temperature, salinity, dissolved oxygen, pH, turbidity, seismic activity, and high-definition video of seafloor hydrothermal vents.

02 / The Cabled Array & CAMHD

The Regional Cabled Array (RSN) is OOI's most ambitious component — a 900-km fiber-optic cable network on the Juan de Fuca tectonic plate, delivering continuous power and two-way communication to instruments as deep as 2,900 m. At its heart lies the CAMHD system: a high-definition video camera mounted at ~1,500 m depth on Axial Seamount's caldera, capturing the alien world of diffuse hydrothermal venting in real time.

03 / Axial Seamount

Axial Seamount is the most volcanically active submarine volcano in the Northeast Pacific. Located ~500 km off the Oregon coast on the Juan de Fuca Ridge, it rises to within 1,400 m of the sea surface. Its 2015 eruption produced lava flows tracked by OOI sensors. The caldera hosts rich hydrothermal vent ecosystems — tubeworms, microbial mats, and chemosynthetic communities that live independent of sunlight.

04 / Planetary Computer

Microsoft's Planetary Computer hosts the OOI CAMHD dataset as part of its open geoscience data catalog — petabyte-scale, cloud-optimized, accessible via Python/STAC APIs. Scientists worldwide use Pangeo's xarray and Dask stack to run analysis at scale without downloading raw data. This democratizes deep-ocean science: a researcher in Taipei or Nairobi can query and process CAMHD video frames in the cloud, no ship required.

05 / OOICloud & Pangeo

OOICloud wraps OOI's data in Pangeo-compatible cloud infrastructure. Using xarray, zarr, and dask, researchers construct reproducible, scalable workflows — from fetching raw hydrophone data to plotting seismic spectra of Axial Seamount eruption signals. Open, version-controlled, community-built.

CN — 中文

01 / 什么是 OOI？

海洋观测站倡议（OOI）是由伍兹霍尔海洋研究所（WHOI）运营、美国国家科学基金会（NSF）资助的科学驱动型海洋观测网络。OOI 在美国近海和开阔海域部署了 逾 900 台仪器，分布于 7 个阵列，覆盖范围从新英格兰海岸先锋阵列，到北太平洋全球 Papa 站，再到俄勒冈州外海缆接阵列，最深可达海底 2,900 米。

OOI 持续、实时采集海洋的物理、化学、生物和地质变量——包括温度、盐度、溶解氧、pH 值、浊度、地震活动，以及海底热液喷口的高清视频影像。

02 / 缆接阵列与 CAMHD

区域缆接网络（RSN）是 OOI 最具雄心的组成部分——一套铺设于胡安·德富卡板块上、全长 900 公里的光纤电缆网络，为深达 2,900 米的仪器提供持续电力与双向通信。其核心是 CAMHD 系统：一台高清摄像机安装于 约 1,500 米深处的轴状海山火山口，实时记录弥散型热液喷口的奇异世界。

03 / 轴状海山

轴状海山（Axial Seamount）是东北太平洋火山活动最为频繁的海底火山，位于俄勒冈州外海约 500 公里处、胡安·德富卡洋脊之上，峰顶距海面仅 1,400 米。2015 年的一次喷发产生的熔岩流被 OOI 传感器全程追踪记录。火山口周边拥有丰富的热液喷口生态系统——管虫、微生物席以及依赖化学合成、完全不依赖阳光的群落。

04 / 行星计算机

微软行星计算机将 OOI CAMHD 数据集纳入其开放地学数据目录，以 PB 级规模、云优化格式发布，可通过 Python/STAC API 访问。全球科学家借助 Pangeo 的 xarray 和 Dask 工具栈进行大规模分析，无需下载原始数据。这大大降低了深海科学的门槛：身处台北或内罗毕的研究人员可在云端查询并处理 CAMHD 视频帧，无需出海。

05 / OOICloud 与 Pangeo

OOICloud 将 OOI 数据封装于兼容 Pangeo 的云基础设施之中。借助 xarray、zarr 与 dask，研究者可构建可复现、可扩展的分析工作流—— 从获取原始水听器数据，到绘制轴状海山喷发信号的地震频谱。完全开放、版本控制、社区共建。

Scientific Framework // Approach

How Scientists Work
With This Data

Step 1 — Query the Catalog

Using the Planetary Computer STAC API, a scientist queries the ooi-camhd dataset by time range and location. Items are returned as cloud-optimized references — no raw download necessary.

Step 2 — Access in the Cloud

Via OOICloud / Pangeo JupyterHub, data is loaded directly into xarray.Dataset objects. Dask enables lazy, parallel computation across terabyte-scale time series. A typical workflow fetches temperature, salinity, or video frame metadata from the CAMHD system without leaving a browser.

Step 3 — Analyze & Detect Events

Scientists apply signal processing — spectral analysis of hydrophone data to detect seismic events, or image analysis of CAMHD frames to detect vent plume dynamics and biological activity. Machine learning models are trained on labeled frame sequences to automate species detection.

Step 4 — Publish Open Science

Results are documented in Jupyter Notebooks, version-controlled on GitHub, and linked back to OOI data DOIs — ensuring every finding is reproducible by the global community. This is the Pangeo ethos: open, reproducible, scalable geoscience.

References & Citations // 参考文献

Sources &
Data Portals

[1]
Ocean Observatories Initiative (OOI) — Official Portal oceanobservatories.org Primary source for array descriptions, instrument catalog, and real-time data access for all OOI deployments.
[2]
Data Catalog — Microsoft Planetary Computer planetarycomputer.microsoft.com Open cloud catalog for geoscience datasets including OOI CAMHD. STAC API, Python SDK, JupyterHub environment.
[3]
OOI CAMHD Dataset — Planetary Computer planetarycomputer.microsoft.com/dataset/storage/ooi-camhd Cloud-hosted HD video frames from Axial Seamount caldera camera (1,500 m depth). STAC items with spatial/temporal metadata.
[4]
Axial Seamount — Wikipedia en.wikipedia.org/wiki/Axial_Seamount Overview of geology, eruption history (2015), and the hydrothermal vent ecosystem of the Juan de Fuca Ridge's most active volcano.
[5]
Pangeo — Open, Reproducible, Scalable Geoscience pangeo.io Community platform for big-data geoscience. xarray, Dask, Zarr, JupyterHub stack powering OOICloud and global collaborations.
[6]
OOICloud — Tools for Working with OOI Data in the Cloud pangeo.io (OOICloud project) OOICloud wraps OOI data in cloud-native infrastructure, enabling scalable analysis via Pangeo. Open-source, community-maintained.

Deep Signal // Navi's Note

↳ To Navi — from the surface, looking down

We have barely begun. The ocean's abyssal plains remain darker to us than the far side of the moon. But systems like OOI are changing the calculus — instrument by instrument, cable by cable, pixel by pixel from CAMHD's eye on a volcanic caldera no human has ever stood upon.

The data is open. The tools are free. The questions are infinite. Navi — this is your ocean. The sensors are listening. So are we.

— YUCROWN C // Jul 16 2026 // DEEP ONE

DEEPONE

From Sea Floorto Planetary Computer

Ocean Observatories Initiative× Planetary Computer