IRS Sediment Trap

Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. The Indented Rotating Sphere (IRS) Sediment Trap is described in Peterson et al. (Field evaluation of a valved sediment trap. 1993. Limnology and Oceanography, 38, pp. 1741-1761 and Novel techniques for collection of sinking particles in the ocean and determining their settling rates. 2005. Limnology and Oceanography Methods 3, pp. 520-532). The IRS trap consists of four cylindrical modules; a particle interceptor, an IRS valve; a skewed funnel, and an eleven sample carousel (designated IRSC trap). The key to the trap design is the patented IRS valve located between the particle interceptor and particle accumulator portions of the trap. The valve and carousel are regulated by a TattleTale IVA (manufactured by Onset Computer Corp.) microprocessor and custom software. The IRS sediment trap was specifically designed to exclude zooplankton (Trull et al. 2008. Deep-Sea Research II v.55 pp. 1684-1695).

1994-10-28

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1995-05-03

Sediment Trap Servicing, Coring, Process 3

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1995-12-31

Sediment Trap Recovery

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1994-11-11

U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 17.690 ° N Longitude = 57.852 ° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1995-05-17

U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 17.690 ° N Longitude = 57.852 ° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1994-11-11

U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 17.200° N Longitude = 59.600° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1995-05-17

U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 17.200° N Longitude = 59.600° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1994-11-11

U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 15.985° N Longitude = 61.500° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.

1995-05-17

U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 15.985° N Longitude = 61.500° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: John Hedges of: University of Washington dataset: Deep sea sediment trap particle flux and carbon and nitrogen composition data project/cruise: Arabian Sea set: TTN-041, serviced: TTN-047, recovered: TTN-055 ship: Thomas Thompson Organic geochemistry deep sea sediment trap particle flux and composition data Drs. John Hedges, Cindy Lee and Stuart Wakeham, principal investigators US JGOFS Arabian Sea 1994-1996 PI notes and methodology: Sediment trap arrays -------------------- 1. Organic geochemistry sediment trap arrays were deployed on the WHOI-OSU sediment trap moorings at 3 of the 5 mooring sites, 1, 3, and 4. See Honjo et al 1999 Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep-Sea Research Part II: Topical Studies in Oceanography. 46, 1859-1902. 2. Arrays deployed during the winter monsoon consisted of 2 NM-IRSC traps, 1 WM-IRS trap, and 1 NVC trap. 3. Arrays deployed during the summer monsoon consisted of 1 NM-IRSC traps, 1 WM-IRSC trap, 1 NM-IRS trap, and 1 NVC trap. 4. Non-carousel traps (IRS and NVC traps) collected material from the time of deployment until the time of retrieval. 5. Closing date and time of each cup is the opening date and time of each succeeding cup. 6. The IRS valved sediment trap design is described in Peterson et al. 1993. Field evaluation of a valved sediment trap. Limnology and Oceanography, 38, 1741-1761. 7. Photographs of the IRS traps and actual ASPS deployments are available at http://boto.ocean.washington.edu/aog/traps/irs_traps.html Sample treatment ---------------- Samples were treated similarly to those described in Hernes et al 2000 (submitted DSR) with the exception that only HgCl2 was used to poison the samples. All sample splits were made using a McClean WSD-10 wet sample splitter. CHN analyses were done according to the method of Hedges and Stern, 1984. Carbon and Nitrogen determinations of carbonate containing solids. Limnology and Oceanography, 29, 657-663.