EarthScope-Oceans Steering Committee Meeting, SUSTech, Shenzhen, June 8-9, 2017

Introductions.

Local weather is very important in setting S/N level.
We talk about location uncertainty, time uncertainty, interpolation location corrections, and how ocean models could help - if they were right.
Cécile Joubert et al., SRL 2016
History: MERMAID Phase I.
Now we are in MERMAID Phase II. 5 year lifetime. Triggered P waves. Also data on demand.
24 bit recording.
Data management. Currently SAC and miniSEED format. "Response" file exists for 1 MERMAID. Varying location is other metadata that is being kept.
MERMAID PHASE III.
Programmable environment. Need to agree on some standards, scheduling, priorities. Sébastien Bonnieux
What about gliders? Also an example of multidisciplinary science, we can learn from that, even though our platform is very different.
MERMAID has *some* steerability if it exploits surface versus abyssal current. Or could wait out strong surface currents.

Tim: Connection with IOC? Mainly Argo right now. We will hear from Mathieu
Alessia is waiting on approval for purchase of 14 MERMAIDS for deployment in 2018-2019. Joint deployment with JAMSTEC and SUSTech. Tomography and geodynamics. Plume. Data sharing policy is informal, but it was agreed that they will be shared, openly after 2-3 years. For now, vague and standard.

DOIs, we should get one from IRIS/FDSN per pool.
We should get some more geographical representation on DataComn.
URL builders to formulate standard requests.
SeisComP3 developed by GFZ. Federated model of data centers. Strongly recommended to use SeisComP3. Easily expands to large numbers of data types. Not even just seismic, even for IRIS. Iris Federator. ESO should become a federated data center! Iris also would be happy to cohost. There would be a second center also. Shenzhen would be the primary. Could be encrypted and password protected.
FDSN is the only seismological standards organization. Other than the proprietary CTBTO.

History and mission of JCOMMOPS under UNESCO, WMO.
Coordination, not direction.
They "monitor close to 8000 platforms in the oceans.
1980 Law of the Sea. They help international coordination, deployment schedules, etc. They maintain warning system of running into economic ones from international waters.
Platform registered in system. Two types of warnings are being issued.
They can help with a deployment schedule, for a fee.
Acoustic is the new kid on the block, they need to be aware of this.
They should want to see an implementation plan.
UNESCO identification tags.
Symbolic contributions needs to be discussed.
Network needs to come on the radar of the international community. A dot on the map.
Next year in Brest, should send a person to their meeting, May 2018.
All CTD type data needs to be coordinated nationally. Then, the international community has to accept.

Science committee objectives, and science committee composition.

Clock drift over a week is better than 1 millisecond, gets synchronized with GPS at every surfacing. There is 3.5 kg of buoyancy available in the new Mermaid (compared to 0.5 in the old version). The bladder expands to fill 3.5 l of water. ARM Cortex M4 proceesor, low power. 5-6 year lifetime, 5.5 kWh of power available as 36 DD cells. OSEAN designed its own hydraulic pump, tested for over 10k cycles.
Mermaid as a lander, can be used for aftershocks etc.
Current board can accommodate a SeaBird CTD integration as an add-on package, from 4000 m up in 12 hours for a profile. Must use the SeaBird ($8k) or else Argo will not take it; they tried another one from Aanderaa (3.5) but Argo did not like it. Whale vocalizations, listen for a few minutes every 3-4 hours. Multimermaid board fits in the same space and can be swapped in, with up to 8 channels.
SeaTREC phase-change material generator.
Pinger could be next, used for interfloat communication also. One month buffer is being built. 25 k is transmitted to a satellite, then then to switch.
Buffer (now 10 events, soon 1 month). Spectrum. CTD. Pinger. Magnetometer.

Data Committee makes a list of policy recommendations. Openness on metadata should be immediate. Proprietary period for science data.

Funding model. Foundations. Environmental angle. Biodiversity and plastics. Illegal fishing.