Water Targets in Hawaii

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Water Targets in Hawaii Water Targets in Hawaii Prepared 80 carboys of ultra clean water Prepared 80 carboys of ultra clean water Placed carboys along an altitude transect Placed carboys along an altitude transect in Hawaii in Hawaii Retrieved 1 set of carboys for Be Retrieved 1 set of carboys for Be recovery testing recovery testing (in progress) (in progress) Approx. 1.5 yr of exposure remaining Approx. 1.5 yr of exposure remaining

description

Water Targets in Hawaii. Prepared 80 carboys of ultra clean water Placed carboys along an altitude transect in Hawaii Retrieved 1 set of carboys for Be recovery testing (in progress) Approx. 1.5 yr of exposure remaining. Water Targets - Preparation. - PowerPoint PPT Presentation

Transcript of Water Targets in Hawaii

Page 1: Water Targets in Hawaii

Water Targets in HawaiiWater Targets in Hawaii

Prepared 80 carboys of ultra clean waterPrepared 80 carboys of ultra clean water

Placed carboys along an altitude transect in HawaiiPlaced carboys along an altitude transect in Hawaii

Retrieved 1 set of carboys for Be recovery testing Retrieved 1 set of carboys for Be recovery testing (in progress)(in progress)

Approx. 1.5 yr of exposure remainingApprox. 1.5 yr of exposure remaining

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Prepared 1.5 Metric Prepared 1.5 Metric Tons of 18.2 MTons of 18.2 M Water Water in Acid-Leached HDPE in Acid-Leached HDPE CarboysCarboys Provided by NSF/SRC Provided by NSF/SRC

Center for Environmentally Center for Environmentally Benign Semiconductor Benign Semiconductor Manufacturing (fabrication Manufacturing (fabrication water) at U of Awater) at U of A

Includes UV treatment for Includes UV treatment for TOC reduction and TOC reduction and disinfectiondisinfection < 1 ppb TOC< 1 ppb TOC

All trace metals including All trace metals including Be are below 2.5 ppt Be are below 2.5 ppt detection limit of ICPMSdetection limit of ICPMS

Water Targets - PreparationWater Targets - Preparation

Clean room: NSF semiconductor fabrication center for ultra pure water, University of Arizona

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Water in CarboysWater in Carboys

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Water Targets in HawaiiWater Targets in Hawaii

[Insert map here]

(5) Keck Headquarters(5) Keck Headquarters(Waimea)(Waimea)850 m850 m

(6) UH-Hilo(6) UH-Hilo76 m76 m

(2) Mauna Loa (2) Mauna Loa ObservatoryObservatory3440 m3440 m

(1 )(1 ) Mauna Kea Mauna Kea ObservatoriesObservatories 4190 m4190 m

(3)(3) Mauna Kea Mauna Kea Visitor CenterVisitor Center 2840 m2840 m

(4) Saddle(4) Saddle1740 m1740 m

40 km

Placed on rooftops Placed on rooftops and in open areas and in open areas on the Island of on the Island of HawaiiHawaii

Target RetrievalTarget Retrieval 1 year 1 year

(Recovery Test) (Recovery Test) 3 years 3 years (All Targets)(All Targets)

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Mass shielding depth (g cm-2)

600 650 700 750 800 850 900 950 1000 1050 1100

Relative neutron flux or 36Cl production rate

0

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18Relative 36Cl productionmeasured in lava flows(Desilets and Zreda, 2006a, EPSL)

Relative neutron monitor counting rate(Desilets and Zreda, 2006b, EPSL)

Water target site

Mauna Kea summit

Mauna Loa Observatory

Mauna Kea Visitor Center

HumuuluSaddle

Keck Waimea UH

at Hilo

1

6

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Water Targets in HawaiiWater Targets in Hawaii

Target locationsTarget locations

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Mauna KeaMauna Kea

Mauna Kea Observatories

4187 m;8 carboys

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Mauna LoaMauna Loa

Mauna Loa Observatory

3439 m;8 carboys

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Mauna Kea Visitor’s CenterMauna Kea Visitor’s Center

2842 m;8 carboys

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The SaddleThe Saddle

1742 m;1742 m;16 carboys16 carboys

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Keck - WaimeaKeck - Waimea

850 m;16 carboys

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University of Hawaii, HiloUniversity of Hawaii, Hilo

76 m;76 m;24 carboys24 carboys