SeanPaul M. La Selle Alan R. Nelson Robert C. Witter Guy Gelfenbaum Jason S. Padgett Bruce E. Jaffe 20240417 comma-delimited text data release DOI:10.5066/P9M86S7D Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P9M86S7D SeanPaul M. La Selle Alan R. Nelson Robert C. Witter Jason S. Padgett Bruce E. Jaffe Guy Gelfenbaum 2024 data release DOI:10.5066/P9M86S7D Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey Suggested Citation: La Selle, S.M., Nelson, A.R., Witter, R.C., Padgett, J.S., Jaffe, B.E., Gelfenbaum, G., 2024, Tsunami deposit data and sediment transport models from the Salmon River, central Oregon coast: U.S. Geological Survey data release, https://doi.org/10.5066/P9M86S7D. https://doi.org/10.5066/P9M86S7D This portion of the data release presents sediment grain-size data from cores and surface samples collected from the Salmon River estuary in 2017 and 2018. In total, 60 samples were collected from 18 sites containing sandy sediment from the circa 1700 CE tsunami deposit, two sites with post-1700 CE silt, and eight modern surface sample sites. The grain-size distributions of samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. The grain-size data are provided in a comma-separated values (.csv) text file. Data were obtained to characterize sediment grainsize distributions. These data are intended for science researchers, students, policy makers, and the general public. Additional information about the field activities from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-643-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-625-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20170716 20210121 ground condition Complete None planned -123.99576 -123.97254 45.03949 45.02468 USGS Metadata Identifier USGS:3054316d-0afd-4bc1-8c01-f919420567c5 ISO 19115 Topic Category geoscientificInformation oceans USGS Thesaurus sand deposits grain-size analysis sediment transport Data Categories for Marine Planning substrate Marine Realms Information Bank (MRIB) keywords sediment None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC Geographic Names Information System Salmon River Lincoln County State of Oregon None. Please see 'Distribution Info' for details. USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. PCMSC Science Data Coordinator U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov grainsize_preview.png Grainsize distributions of tsunami sediments from the Salmon River estuary, OR. PNG SeanPaul M. La Selle Alan R. Nelson Robert C. Witter Guy Gelfenbaum Jason S. Padgett Bruce E. Jaffe 2024 La Selle, S.M., Nelson, A.R., Witter, R.C., Gelfenbaum, G., Padgett, J.S., and Jaffe, B.E., 2024, Testing megathrust rupture models using tsunami deposits: Journal of Geophysical Research: Earth Surface, https://doi.org/10.1029/2023JF007444. https://doi.org/10.1029/2023JF007444 Beckman-Coulter 2011 Beckman-Coulter, 2011, Instructions for Use: LS 13 320 Laser Diffraction Particle Size Analyzer: Brea, Calif., Beckman-Coulter, 246 p. https://www.beckmancoulter.com/wsrportal/techdocs?docname=b05577ab.pdf Robert E. Carver 1971 Carver, R.E., 1971, Procedures in Sedimentary Petrology: Wiley Interscience, New York: 49-94. https://tamug-ir.tdl.org/handle/1969.3/21450 Robert Louis Folk 1974 Folk, R.L., 1974, Petrology of Sedimentary Rocks: Hemphill Publishing Co., Austin, TX, 182 p. https://tamug-ir.tdl.org/handle/1969.3/21435 Robert Louis Folk 1980 Folk, R.L., 1980, Petrology of Sedimentary Rocks: Hemphill Publishing Co., Austin, TX, 184 p. https://repositories.lib.utexas.edu/bitstream/handle/2152/22930/folkpetrology.pdf?sequence=3 Penscil, Inc. 2015 Penscil Inc., 2015, pcSDSZ Sediment Size Analysis Software for Windows: Operation Manual Version 2.00: Los Osos, Calif., 131 p. For grain-size analyses, annual service tests and daily calibrations with reference standards ensured that the Beckman Coulter LS 13 320 operated within specifications. Each sample was analyzed three times by the instrument and the data were averaged. In addition, a lab procedural duplicate was run with each batch of samples to ensure consistency and values were within 15 percent. No formal logical accuracy tests were conducted Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. The locations of samples were determined using a Garmin etrex 30x handheld Global Satellite Navigation System (GNSS) receiver capable of receiving wide area augmentation system (WAAS) signals. The manufacturer reported accuracy for horizontal positions is 3-5 m while receiving WAAS signals. No formal positional accuracy tests were conducted, nor were they applicable for this dataset. Cores and surface samples were collected in July, 2017 and May, 2018. A handheld Global Satellite Navigation System (GNSS) receiver was used to determine the locations of sediment samples. Subsurface sediments were subsampled from cores by hand in the field. 20180515 Grain-size analysis was conducted by the USGS Pacific Coastal and Marine Science Center (PCMSC) sediment lab using a Beckman Coulter LS 13 320 particle size analyzer with an aqueous liquid module attachment. PCMSC procedures are modified from those described in Carver (1971) and Folk (1974, 1980). 5-50 grams of sediment was sub-sampled and at least 10 milliliters of 30 percent hydrogen peroxide were added to oxidize for at least 12 hours to remove organics. The samples were then heated to 250 degrees Celsius to drive off excess hydrogen peroxide. Next, samples were placed in an ultrasonic bath to help disperse silt and clay (mud) from sand and larger-sized particles. Samples were then rinsed twice in deionized water with centrifugation to remove soluble ions. Subsequently, the samples were wet sieved with 1 millimeter and 0.063 millimeter sieves to segregate the combined gravel and coarse sand fraction (greater than 1 millimeter), sand (1 millimeter to 0.063 millimeter), and mud (less than 0.063 millimeter). The coarse sand + gravel fractions were then dried, dry sieved at 1/4phi intervals and weighed (Carver, 1971). The sand fraction was dried and weighed. The mud fraction was collected in a 1 liter graduated cylinder, 5 milliliters of at least 10 percent sodium hexametaphosphate (dispersant) were added, and deionized water was added to bring the total the volume to 1 liter. The mud + dispersant solution sat for at least 12 hours to ensure complete dispersion and to observe if flocculation occurred. Subsequently, a 20 milliliter aliquot was extracted from the graduated cylinder and dried to obtain the mud fraction weight normalized to a 1-liter basis. The mud and sand fractions were analyzed separately via the Beckman Coulter LS 13 320 with the aqueous liquid module attachment. All size fraction data were compiled and converted by the PCMSC sediment lab pcSDSZ program (Penscil, 2015) to a grain-size distribution at 1/4phi size intervals on a weight percent basis. 20210121 Angela Tan U.S. Geological Survey, Pacific Coastal and Marine Science Center Physical Scientist mailing and physical

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Santa Cruz CA 95060 831-460-7409 atan@usgs.gov Point Point 62 0.00001 0.00001 Decimal Degrees WGS_1984 WGS_1984 6378137.0 298.257223563 salmonriver_grainsize.csv Comma Separated Value (.csv) file containing grainsize data. producer defined field_activity_number Field Activity Number producer defined Unique identifier for the U.S. Geological Survey field activity sample_id Name of sample in LocalityYear-CoreID-Depth format, where LocalityYear is a two-letter abbreviation of the field locality (for example SR = Salmon River) followed by the 2-digit year (17 for 2017, 18 for 2018), CoreID is the unique name given to a core (for example gc21 is gouge core 21, S6 is surface sample 6), and Depth is the depth interval in centimeters in the core from which the sample was collected (no depths assigned for surface samples). Samples that were split and analyzed twice are identified by the "duplicate" appended to the Sample I.D. producer defined Unique identifier for the sample used given in the field lab_id Name of sample identifier in YY-FFFFF-XX format, where YY is the 2-digit year (for example 18=2018), FFFFF is the 5-digit field-activity-number (FAN) ID code, and XX is a sequential number given to the sample in the lab. producer defined Unique identifier for the sample given during analysis in the lab date_collected Date of grainsize sample collection in the field in yyyy-mm-dd format. Not to be confused with the date the grain size analyses were performed. producer defined 2017-07-16 2018-05-15 Dates in yyyy-mm-dd format latitude Latitude of site where sample was collected, in decimal degrees. producer defined 45.02468 45.03949 longitude Longitude of site where sample was collected, in decimal degrees. producer defined -123.99576 -123.97254 sample_type Type of sample collected, either subsampled from a core (gouge core) or collected from the sediment-air or sediment-water interface (surface sample) producer defined gouge core The associated sample was subsampled from the barrel of a hand driven gouge core in the field and placed in a plastic sample bag. producer defined surface sample The associated sample was subsampled from the modern sediment surface and placed in a plastic sample bag. producer defined wt_percent_in_-4.00phi_or_16mm_bin Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-3.75phi_or_13.5mm_bin Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-3.50phi_or_11.2mm_bin Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-3.25phi_or_9.51mm_bin Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-3.00phi_or_8mm_bin Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-2.75phi_or_6.73mm_bin Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-2.50phi_or_5.66mm_bin Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-2.25phi_or_4.76mm_bin Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-2.25phi_or_4.76mm_bin Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-2.00phi_or_4mm_bin Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-1.75phi_or_3.36mm_bin Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_-1.50phi_or_2.83mm_bin Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm. producer defined 0.000000 0.477653 percentage wt_percent_in_-1.25phi_or_2.38mm_bin Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm. producer defined 0.000000 1.910611 percentage wt_percent_in_-1.00phi_or_2mm_bin Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm. producer defined 0.000000 1.545385 percentage wt_percent_in_-0.75phi_or_1.68mm_bin Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm. producer defined 0.000000 2.275945 percentage wt_percent_in_-0.50phi_or_1.41mm_bin Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm. producer defined 0.000000 1.948346 percentage wt_percent_in_-0.25phi_or_1.19mm_bin Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm. producer defined 0.000000 1.662562 percentage wt_percent_in_0.00phi_or_1mm_bin Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm. producer defined 0.000000 2.093384 percentage wt_percent_in_0.25phi_or_0.8409mm_bin Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm. producer defined 0.000000 1.025767 percentage wt_percent_in_0.50phi_or_0.7071mm_bin Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm. producer defined 0.000000 1.073636 percentage wt_percent_in_0.75phi_or_0.5946mm_bin Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm. producer defined 0.000000 1.128344 percentage wt_percent_in_1.00phi_or_0.5mm_bin Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm. producer defined 0.000000 2.146149 percentage wt_percent_in_1.25phi_or_0.4204mm_bin Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm. producer defined 0.000000 7.985448 percentage wt_percent_in_1.50phi_or_0.3536mm_bin Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm. producer defined 0.000000 15.990517 percentage wt_percent_in_1.75phi_or_0.2973mm_bin Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm. producer defined 0.020765 21.680394 percentage wt_percent_in_2.00phi_or_0.25mm_bin Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm. producer defined 0.313298 22.825075 percentage wt_percent_in_2.25phi_or_0.2102mm_bin Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm. producer defined 0.874947 19.204381 percentage wt_percent_in_2.50phi_or_0.1768mm_bin Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm. producer defined 0.651095 13.189904 percentage wt_percent_in_2.75phi_or_0.1487mm_bin Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm. producer defined 0.868730 9.120922 percentage wt_percent_in_3.00phi_or_0.125mm_bin Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm. producer defined 0.915193 9.378049 percentage wt_percent_in_3.25phi_or_0.1051mm_bin Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm. producer defined 0.433612 8.526347 percentage wt_percent_in_3.50phi_or_0.08839mm_bin Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.08839 and 0.1051 mm. producer defined 0.107045 7.557921 percentage wt_percent_in_3.75phi_or_0.07433mm_bin Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm. producer defined 0.018260 6.583649 percentage wt_percent_in_4.00phi_or_0.0625mm_bin Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm. producer defined 0.027576 4.980211 percentage wt_percent_in_4.25phi_or_0.052556mm_bin Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm. producer defined 0.000070 3.611365 percentage wt_percent_in_4.50phi_or_0.044194mm_bin Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm. producer defined 0.000080 3.065846 percentage wt_percent_in_4.75phi_or_0.037163mm_bin Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm. producer defined 0.000094 3.225377 percentage wt_percent_in_5.00phi_or_0.03125mm_bin Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm. producer defined 0.000112 4.065601 percentage wt_percent_in_5.25phi_or_0.02628mm_bin Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm. producer defined 0.000121 4.408918 percentage wt_percent_in_5.50phi_or_0.0221mm_bin Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm. producer defined 0.000121 4.291468 percentage wt_percent_in_5.75phi_or_0.01858mm_bin Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm. producer defined 0.000124 4.146913 percentage wt_percent_in_6.00phi_or_0.01563mm_bin Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm. producer defined 0.000140 4.210156 percentage wt_percent_in_6.25phi_or_0.01314mm_bin Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm. producer defined 0.000173 4.481196 percentage wt_percent_in_6.50phi_or_0.01105mm_bin Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm. producer defined 0.000201 4.607681 percentage wt_percent_in_6.75phi_or_0.00929mm_bin Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm. producer defined 0.000218 4.580577 percentage wt_percent_in_7.00phi_or_0.00781mm_bin Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm. producer defined 0.000226 4.454092 percentage wt_percent_in_7.25phi_or_0.00657mm_bin Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm. producer defined 0.000232 4.264364 percentage wt_percent_in_7.50phi_or_0.00552mm_bin Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm. producer defined 0.000237 4.092705 percentage wt_percent_in_7.75phi_or_0.00465mm_bin Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm. producer defined 0.000233 3.812630 percentage wt_percent_in_8.00phi_or_0.00391mm_bin Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm. producer defined 0.000230 3.613867 percentage wt_percent_in_8.25phi_or_0.00329mm_bin Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.00329 and 0.00391 mm. producer defined 0.000223 3.388001 percentage wt_percent_in_8.50phi_or_0.00276mm_bin Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.00276 and 0.00329 mm. producer defined 0.000207 3.062753 percentage wt_percent_in_8.75phi_or_0.00232mm_bin Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.00232 and 0.00276 mm. producer defined 0.000199 2.818817 percentage wt_percent_in_9.00phi_or_0.00195mm_bin Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.00195 and 0.00232 mm. producer defined 0.000193 2.592950 percentage wt_percent_in_9.25phi_or_0.00164mm_bin Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.00164 and 0.00195 mm. producer defined 0.000192 2.385152 percentage wt_percent_in_9.50phi_or_0.00138mm_bin Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.00138 and 0.00164 mm. producer defined 0.000194 2.195424 percentage wt_percent_in_9.75phi_or_0.00116mm_bin Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.00116 and 0.00138 mm. producer defined 0.000201 2.050870 percentage wt_percent_in_9.99phi_or_0.00098mm_bin Weight percent of sample with grain diameter between 9.75 and 9.99 phi, or 0.00098 and 0.00116 mm. producer defined 0.000196 1.815968 percentage wt_percent_in_10.25phi_or_0.00082mm_bin Weight percent of sample with grain diameter between 9.99 and 10.25 phi, or 0.00082 and 0.00098 mm. producer defined 0.000199 1.707552 percentage wt_percent_in_10.50phi_or_0.00069mm_bin Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.00069 and 0.00082 mm. producer defined 0.000174 1.400374 percentage wt_percent_in_10.75phi_or_0.00058mm_bin Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.00058 and 0.00069 mm. producer defined 0.000145 1.120299 percentage wt_percent_in_10.99phi_or_0.00049mm_bin Weight percent of sample with grain diameter between 10.75 and 10.99 phi, or 0.00049 and 0.00058 mm. producer defined 0.000103 0.767947 percentage wt_percent_in_11.25phi_or_0.0004mm_bin Weight percent of sample with grain diameter between 10.99 and 11.25 phi, or 0.0004 and 0.00049 mm. producer defined 0.000060 0.433664 percentage wt_percent_in_11.48phi_or_0.00035mm_bin Weight percent of sample with grain diameter between 11.25 and 11.48 phi, or 0.00035 and 0.0004 mm. producer defined 0.000014 0.099381 percentage wt_percent_in_12.02phi_or_0.000241mm_bin Weight percent of sample with grain diameter between 11.48 and 12.02 phi, or 0.000241 and 0.00035 mm. producer defined 0.000000 0.000000 percentage wt_percent_in_13.02phi_or_0.00012mm_bin Weight percent of sample with grain diameter between 12.02 and 13.02 phi, or 0.00012 and 0.000241 mm. producer defined 0.000000 0.000000 percentage The first line of the csv file is a header line. U.S. Geological Survey U.S. Geological Survey - CMGDS mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Sediment grainsize data are available in comma-delimited text file format (salmonriver_grainsize.csv), accompanied by FGDC-compliant metadata Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. comma-delimited text comma separated value (.csv) file none 0.0346 https://doi.org/10.5066/P9M86S7D Data can be downloaded using the Network_Resource_Name links and scrolling down to the "Environmental Data" section. None 20240420 PCMSC Science Data Coordinator U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998